PUBLICATION

1. Ramalingam, Nimalrajh, et al. "Development of a biaxial fibre Bragg grating (FBG) extensometer with axis misalignment error compensation and cloud integration for advanced slope monitoring." Engineering Research Express 7.1 (2025): 015110.
2. Fahri, R. Zakaria MAS Ahmad, et al. "Plasmon-enhanced Au and Ag-heterostructures 2D materials from nonlinear and photodetector applications at broad wavelength." 2025 IEEE Silicon Photonics Conference (SiPhotonics). IEEE, 2025.
3. Ramalingam, Nimalrajh, et al. "Tilt Angle Detection Based on Edge-core Parallel Gratings Fabricated by Femtosecond Laser Point-by-point Method." IEEE Transactions on Instrumentation and Measurement (2025).
4. Ahmad, H., et al. "Widely Tunable Narrow Linewidth Dual-Wavelength Fiber Laser using In-line Six-Mode Fiber Filter with a Double-Ring Compound Cavity (DRCC)." IEEE Journal of Quantum Electronics (2025).
5. Samion, M. Z., et al. "Generation of Soliton Pulses in Erbium and Thulium-Holmium Doped Fiber Lasers Using 2D Ternary Layered Material (FePSe3)." Fiber and Integrated Optics (2025): 1-19.
6. Azmy, Nur Fatini, et al. "Carbon-based composite reinforced chitosan film to initiate wavelength-tunable Q-switched erbium-doped fiber laser." Physica Scripta 100.8 (2025): 085532.
7. Makhfuz, Maryam Jasmine Mohd, Norazriena Yusoff, and Harith Ahmad. "Ti2C MXene-based arc-shaped fiber SPR sensor for refractive index sensing." Optical Fiber Technology 93 (2025): 104249.
8. Ahmad, H., N. A. M. Rusni, and M. Z. Samion. "Performance of Azulene and Azulene-PEG Saturable Absorber in Mode-Locked Thulium-Holmium Doped Fiber Lasers." Optical Materials (2025): 117170.
9. Tey, Lian Seng, S. V. Muniandy, and Wu Yi Chong. "Modeling memory function of entangled photon and classical laser photon-count fluctuations using white noise integral analysis." Physica Scripta 100.1 (2025): 015243.
10. Tey, Lian Seng, S. V. Muniandy, and Wu Yi Chong. "Distinguishing photon-count fluctuation characteristics of classical and quantum light sources using non-Markovian processes." Physical Review E 111.4 (2025): 044138.
11. Burhanuddin, W. A. F. W., et al. "Fiber Bragg Grating (FBG)-based Pore Pressure Sensor Utilizing Bellows System." IEEE Sensors Journal (2024).
12. Avdizhiyan, Artur, et al. "Surface-Plasmon-Mediated Reduction in the Effective Gilbert Damping in Hybrid Photomagnetic Au/YIG: Co Bilayers." ACS Photonics 12.9 (2025): 5024-5031.
13. Ahmad, Harith, et al. "Studying the influence of deposition methods on ultrashort pulse generation." Photonics and Nanostructures-Fundamentals and Applications 63 (2025): 101358.
14. Ahmad, H., B. Nizamani, and A. Bencheikh. "LP 11 mode all-fiber ultrafast laser at 1.3 μm by using bismuth telluride as an optical modulator." IEEE Journal of Quantum Electronics (2025).
15. Ahmad, H., N. A. M. Rusni, and M. Z. Samion. "Rhodamine 6G fluorescent dye as a saturable absorber for harmonic mode-locked pulses generation in thulium-holmium doped fiber lasers." Optical Fiber Technology 95 (2025): 104438.
16. Ahmad, H., et al. "TiO2/Ti3C2TX MXene Composite as Saturable Absorber for Passive Harmonic Mode-Locking Operation in Thulium-Holmium Doped Fiber Laser." Journal of Nonlinear Optical Physics & Materials (2025).
17. Ahmad, H., et al. "Ultrafast pulse generation at 115 fs with a high peak power of 0.24 MW aided with Bi2Te3 2D nanomaterials." Photonics and Nanostructures-Fundamentals and Applications 63 (2025): 101351

18. Ahmad, H., et al. "Dissipative soliton generation on all normal dispersion (ANDi) mode-locked 1-μm fiber laser using MoS 2/ZnO composite on a side-polished fiber." IEEE Journal of Quantum Electronics (2024).
19. Udos, Waldo, et al. "Enhanced Detectability of SARS-CoV-2 Using Sandwich Immunoassay Sensor Based on Tilted Fiber Bragg Grating With Strong Cladding Mode Resonances." IEEE Sensors Journal (2025).
20. Ahmad, Harith, et al. "Analysis of the effects of arc-shape fibre structure on the performance of passively mode-locking thulium/holmium-doped fibre laser." Optoelectronics and Advanced Materials-Rapid Communications 19.November-December 2025 (2025): 475-483.
21. Ahmad, Harith, Leela Wanti Lohano, and Bilal Nizamani. "Tunable dual-wavelength single-longitudinal mode fiber laser with a high optical signal-to-noise ratio and ultra-narrow linewidth using in-line Fabry-Perot interferometer." Measurement Science and Technology 36.6 (2025): 065209.
22. Ahmad, Harith, et al. "MXene-Cr2C as a novel saturable absorber for mode-locking at 2.07 μm." Optical Materials 160 (2025): 116713.
23. Ismail, Muhammad Nur Syafiq Mohamad, et al. "Plasmon-enhanced visible photodetectors based on hexagonal boron nitride (hBN) with gold (Au), silver (Ag), and non-alloyed bimetallic (Au/Ag) nanoparticles." Scientific Reports 15.1 (2025): 6.
24. Nawaz, Asif, et al. "Nanoparticle enhanced coupled bioheat vapor bubble model and simulation for LITT in breast tumors." Lasers in Medical Science 40.1 (2025): 496.
25. Wang, Jianxian, et al. "Smart fault detection, classification, and localization in distribution networks: AI-driven approaches and emerging technologies." IEEE Access (2025).
26. Mohamed, Heba G., et al. "Novel chiral metasurface design with ring resonators for THz applications." Frontiers in Physics 13 (2025): 1641031.
27. Ahmad, Harith, et al. "In-line six-mode fiber filter based millimeter-wave generation in tunable and switchable dual wavelength fiber laser for 5G networks." Journal of Physics Communications 9.2 (2025): 025006.
28. Ahmad, Harith, et al. "Nb2C/Fe3O4 nanocomposite for ultrashort pulse generation in amplified holmium-doped fiber laser system." Physica Scripta 100.12 (2025): 125518.
29. Ahmad, Harith, et al. "Tunable dual-wavelength bismuth-doped fiber laser in O-band using in-line six-mode fiber filter." Optical Fiber Technology 95 (2025): 104393.
30. Al-Asaadi, Sana SH, et al. "1072 nm passively Q-switched laser based on hybrid organic small molecules as a saturable absorber with a high output power." Laser Physics 35.12 (2025): 125101.
31. Jaharudin, Nurul Atika Nabila, et al. "Optofluidic sensor for iron detection based on inline Fabry Perot Interferometer fabricated by femtosecond laser pulses and selective etching." IEEE Sensors Journal (2025).
32. Kua, K. H., et al. "Wigner function analysis of the decoherence of discrete-time quantum walk in the bit-phase noise channel." Physica Scripta 100.10 (2025): 105108.
33. Ahmad, H., et al. "Generation of h-shaped pulses in erbium/ytterbium fiber laser using hybrid configurations with graphene oxide/zinc oxide nanocomposite arc-shaped fiber." Physica Scripta 100.5 (2025): 055508.
34. Wei, Xiangyu, et al. "Global rapid thermomechanical decoupling method based on adaptive localized method of fundamental solutions and sparse embedded FBG in thermal protection materials for aerospace vehicles." International Journal of Thermal Sciences 218 (2025): 110166.
35. Ahmad, H., et al. "102 kHz repetition rate dissipative soliton mode-locked Yb-doped fiber using Nb2CTx/ZnO composite as saturable absorber." Physica Scripta 100.8 (2025): 085533.

36. Ahmad, Harith, Khalil Kamaruzzaman, and Muhamad Zharif Samion. "Switchable dual-wavelength Ho-doped fiber laser using thin core fiber filter operating at the extended 2 μm wavelength region." Physica Scripta 100.7 (2025): 075533.
37. Ahmad, Harith, et al. "Tunable S-band multiwavelength Brillouin fiber laser for beat frequency generation at 11 and 22 GHz." Optical Fiber Technology 94 (2025): 104378.
38. Bhatti, Hamza Siddique, et al. "Highly Sensitive Fibre Bragg Grating Geophone for Low-Frequency Seismic Detection." IEEE Transactions on Instrumentation and Measurement (2025).
39. Ahmad, H., et al. "Usage of novel Co-MOF for mode-locked pulse generation near 2 μm." IEEE Journal of Quantum Electronics (2025).
40. Qi, An, et al. "Solution-processed Nb2CTx-TiO2/PVA composite film: Fabrication and saturable absorption for wavelength-tunable erbium-doped fiber lasers." JOURNAL OF ALLOYS AND COMPOUNDS 1043 (2025).
41. Azmi, Abdur Rahman, et al. "Simultaneous humidity and temperature measurement sensor based on coated multiplexed fibre bragg gratings." Journal of Mechanical Engineering and Sciences (2025): 10713-10726.
42. Liu, Yuhao, et al. "Real-Time Sensor for Measuring the Surface Temperature of Thermal Protection Structures Based on the Full-Time Domain Temperature Inversion Method." Sensors 25.7 (2025): 2227.
43. Reinhoffer, C., et al. "Terahertz excitation of exchange mode in a cavity formed by crystal interfaces." Physical Review B 111.18 (2025): 184412.
44. Bhatti, H. S., et al. "Temperature and chirp compensated fibre Bragg grating geophone for improved seismic detection." Optics Communications 579 (2025): 131533.
45. Zulkifli, Ahmad Zarif, et al. "S-band Q-switched thulium-doped fluoride fiber laser with reduced graphene oxide as saturable absorber." Laser Physics 35.11 (2025): 115102.
46. Ahmad, H., et al. "Ti3C2Tx/MoO3 composite as saturable absorber for dissipative soliton 1.0 μm mode-locked fiber laser." Physica Scripta 100.6 (2025): 065519.
47. Al-Hanoot, Abdulrhman Klifa, et al. "Monte Carlo simulation for real-world energy yield analysis of car park solar PV system installations in harsh environments." Results in Engineering 28 (2025): 106996.
48. Singh, Sneha, et al. "Exploration and analysis of high-K wrapped underlap based GaN SOI FinFET for enriched performance towards RF applications." Materials Today Electronics (2025): 100170.
49. Ahmad, H., et al. "2 µm mode-locked pulse generation using nickel metal-organic framework (Ni-MOF) coated arc-shaped fiber." Optical Fiber Technology 93 (2025): 104212.
50. Ahmad, H., et al. "Performance of mode-locked pulses in thulium-holmium-doped fiber lasers induced by paraffin-layered TiO2–Nb2CTx composite." Journal of Materials Science: Materials in Electronics 36.31 (2025): 1-22.
51. Xu, Chang, et al. "Enhanced twin delayed DDPG with prioritized experience replay and Noisy Nets for regional economic dispatch." Scientific Reports (2025).
52. Shahril, Muhammad Ridzwan, et al. "Hot-wire anemometer based on fiber Bragg grating coated with carbon conductive paint." environments 11 (2025): 12.
53. Azimov, Abdukhamidjon, et al. "Evaluation of cutting accuracy and thermal damage in oral soft tissue using different surgical techniques." Lasers in Medical Science 41.1 (2025): 2.
54. Ahmad, Harith, et al. "Cu-MOF as a saturable absorber for mode-locking at 2 µm and beyond." Scientific Reports (2025).
55. Pang, Yong, et al. "Fabrication of high-quality and high-efficiency microchannels using parallel picosecond laser with Chemical-Assisted approach." Optics & Laser Technology 188 (2025): 113020.

56. Ahmad, H., et al. "High-energy all-fiber Er-doped femtosecond chirped-pulse amplification system seeded by nonlinear multimodal interference mode-locked fiber laser." Optical Fiber Technology 93 (2025): 104245.
57. Nashron, Muhammad Fahmi Naqib, et al. "Incorporation 2D-TMDC for high performance surface plasmon resonance (SPR) based fiber optic biosensor for early Salmonella detection: A review." Optical Fiber Technology 95 (2025): 104464.
58. Abdellatif, Abdallah, et al. "SHapley Additive exPlanations-guided rule-based energy management: bridging machine learning interpretability and adaptive control strategies." Renewable Energy Focus (2025): 100779.
59. Govindasamy, Abilashinee, et al. "Emerging Applications and Challenges in SPR‐Based Biosensors for Non‐Invasive Quality Assessment of Wharton's Jelly‐Derived Mesenchymal Stem Cells (WJ‐MSCs) via Secretome Analysis." Advanced Healthcare Materials (2025): e02045.
60. Muslimin, Nuril Azmi, et al. "Lighting System Optimization, Components and Simulation Tools for Building Installations: A Review." IEEE Access (2025).
61. Wang, Yadi, et al. "Laser assisted surface activation and selective copper metallization for ceramic substrates: a review." Optics & Laser Technology 192 (2025): 114106.
62. Shatar, Liyana, et al. "Enhancement in surface-enhanced Raman spectroscopy (SERS) substrates and the potential for diseases detection." Applied Spectroscopy Reviews (2025): 1-48.
63. Ismail, Nor Najwa, et al. "Generation of stretched and soliton pulses from passively mode-locked EDFL utilizing nickel-phosphorus trisulfide (NiPS 3)-based saturable absorber." IEEE Journal of Quantum Electronics (2025).
64. Zhuang, Changquan, et al. "A MEMS fiber-optic Fabry-Perot accelerometer with spectral-phase demodulation." Optics & Laser Technology 191 (2025): 113371.

1. Ramalingam, Nimalrajh, et al. "Cantilever-based biaxial FBG inclinometer with low cross-axis sensitivity." Optica Applicata 54.2 (2024).
2. Yang, Hangting, et al. "Enhancing data sparsity in spectral signals using wavelet decomposition for improved compression and storage efficiency." Optical Fiber Technology 86 (2024): 103848.
3. Gan, S. X., et al. "Optical phase transition of Ge2Sb2Se4Te1 thin film using low absorption wavelength in the 1550 nm window." Optical Materials 120 (2021): 111450.
4. Annadurai, C., et al. "Studies of Plasmonic Gold (Au) Nanoparticles and Nanofilms Effects on Photoelectron Generation Using B2O3 Glass Substrate." Plasmonics 20.5 (2025): 2765-2773.
5. Tey, Lian Seng, S. V. Muniandy, and Wu Yi Chong. "Photon-count fluctuations of spontaneous parametric down conversion exhibit long-range correlations." Journal of the Optical Society of America B 41.9 (2024): 2070-2076.
6. Ghafari, Shadi, et al. "Performance improvement of photodetectors based on ZIF-8 nanostructures on porous silicon substrate." Journal of Electronic Materials 53.3 (2024): 1577-1589.
7. Ahmad, H., K. Kamaruzzaman, and M. Z. Samion. "Mode-locking and q-switching in holmium doped fiber laser using topological insulator (Sb 2 Te 3) as saturable absorber." IEEE Journal of Quantum Electronics (2024).
8. Kok, Sing Lim, et al. "Laser remote sensor for oil palm fruit ripeness assessment." (2024): 1-7.
9. Fahri, Muhammad Aiman Saufi Ahmad, et al. "Nonlinear optical studies of tungsten disulphide (WS2)/gold nanoparticles (AuNPs) using infrared femtosecond laser." Applied Physics A 130.10 (2024): 689.
10. Boaz, Uziel, Shubhashri Waghmare, and Rozalina Zakaria. "Computational Investigation on Tunability of Optical Absorption in MoS2 Integrated with Mono-and Non-Alloyed AuAg Nanoparticles for Photodetector Application." Plasmonics 20.3 (2025): 1729-1742.
11. Ooi, Cheong-Weng, et al. "Insights and perspectives on modal characteristics in tilted fiber Bragg gratings: A review." IEEE Sensors Journal (2024).
12. Boaz, Uziel, Shubhashri Waghmare, and Rozalina Zakaria. "Computational Investigation on Tunability of Optical Absorption in MoS2 Integrated with Mono-and Non-Alloyed AuAg Nanoparticles for Photodetector Application." Plasmonics 20.3 (2025): 1729-1742.
13. Ahmad, H., Arina, M. R. N., Samion, M. Z., Ortaç, B., & Yusoff, N. (2024). Passive harmonic mode-locking in Tm–Ho doped fiber laser with MoS2–ZnO saturable absorber deposited on the arc-shaped fiber. Optical Materials, 154, 115797.
14. Ahmad, Harith, et al. "The effect of Ti2C MXene on the performance of optical fiber-based surface plasmon resonance sensor towards lead detection." Materials Science and Engineering: B 302 (2024): 117232.
15. Ahmad, Harith, et al. "Optimizing a 1.9 μm mode-locked laser by controlling the concentration of reduced graphene oxide-magnesium oxide." Optical Materials 149 (2024): 114993.
16. Alias, M. A., et al. "Performance comparison of a 3-D printed Fiber Bragg grating (FBG) load cell sensor based on the influence of different infill density and pattern." IEEE Sensors Journal 24.8 (2024): 12400-12412.
17. Gan, Soon Xin, et al. "Single-mode fiber multi-level all-optical switching using GSST-graphene oxide hybrid thin film structure." Journal of Applied Physics 136.6 (2024).
18. Naderi, Nima, Harith Ahmad, and Mohammad Faizal Ismail. "Improved optoelectrical performance of nanostructured ZnO/porous silicon photovoltaic devices." Ceramics International 50.9 (2024): 14849-14855.
19. Ahmad, H., et al. "Evolution of noise-like pulses to watt-level all-fiber supercontinuum in compact all-normal dispersion fiber laser using nonlinear polarization rotation." Optical Fiber Technology 87 (2024): 103861.
20. Burhanuddin, W. A. F. W., et al. "Multi-Parameter Fiber Bragg Grating (FBG)-based Sensor Fabricated using 3D Printing Technology for Precise Measurement of Vertical Earth and Pore Pressure." IEEE Sensors Journal (2024).
21. Udos, Waldo, et al. "Signal amplification study for gold-coated tilted fiber Bragg grating with avidin-biotin sandwich assay in the detection of SARS-CoV-2." IEEE Sensors Journal 24.15 (2024): 23878-23885.
22. Ahmad, H., et al. "Switchable dual-and Single-Wavelength mode-locked bismuth-doped fiber lasers at O-band." Optical Fiber Technology 88 (2024): 104009.
23. Naderi, Nima, and Harith Ahmad. "Performance stability of porous silicon solar cells using reduced graphene oxide for applications in harsh environments." Optics Communications 559 (2024): 130422.
24. Ahmad, H., et al. "98 fs high energy stable hybrid mode-locked nonlinear polarization rotation with CuO-doped ZnO saturable absorber." IEEE Journal of Quantum Electronics 60.4 (2024): 1-11.
25. Ahmad, H., et al. "Mode-locking in holmium doped fiber laser operating at 2.06 µm using manganese violet." Optical and Quantum Electronics 56.7 (2024): 1091.
26. Naderi, Nima, Harith Ahmad, and Mohammad Faizal Ismail. "Integrated photodetectors embedded within fiber laser based on hybrid rGO: ZnO nanostructures." Physica Scripta 99.7 (2024): 075945.
27. Zhao, Xiong, et al. "Inverse heat transfer for real-time thermal evaluation of aircraft thermal protection structure with embedded FBG sensors." Applied Thermal Engineering 260 (2025): 124869.
28. Ahmad, H., et al. "108 fs high-power mode locked double-clad ytterbium-doped fiber laser using FePS3 saturable absorber." Optical and Quantum Electronics 56.5 (2024): 825.
29. Ahmad, Harith, et al. "Arrayed waveguide gratings (AWGs) in ZBLAN fibers for switchable dual-wavelength fiber lasers in the O-and S-band regions." Laser Physics 34.10 (2024): 105104.
30. Ahmad, Harith, et al. "Michelson interferometer-based tunable multiwavelength thulium-doped fluoride fiber laser in S-band for 5 G networks." Physica Scripta 99.6 (2024): 065575.
31. Amran, Rose Dayaana, et al. "Flexural evaluation of Textile Reinforced Concrete Panel (TRC) with mesh pre-stretching effect." Advances in concrete construction 17.3 (2024): 127-133.
32. Ahmad, Harith, and Bilal Nizamani. "1.3 μm higher order LP11 mode pulses in praseodymium-doped fluoride fiber laser." Journal of Optics 26.11 (2024): 115501.
33. Ahmad, H., et al. "O-band femtosecond mode-locked laser by using Ni-MOF in praseodymium-doped fluoride fiber." Optical Materials 157 (2024): 116175.
34. Loganathan, Kirubhashni, Harith Ahmad, and Norazriena Yusoff. "Generation of mode-locked pulses assisted by reduced graphene oxide/cerium oxide (rGO/CeO2) embedded in arc-shaped fiber." Physica Scripta 99.12 (2024): 125107.
35. Zulkifli, M. Z., et al. "Carbon conductive coated fiber Bragg grating sensor for voltage detection." Journal of Optoelectronics and Advanced Materials 26.May-June 2024 (2024): 206-212.
36. Ahmad, Harith, et al. "120 nm wide band tunable pulsed laser generation employing vanadium carbide MXene/polyvinyl alcohol (V2C-PVA) film." Physica Scripta 99.1 (2024): 015505.
37. Ahmad, H., et al. "Mode-locked thulium-holmium doped fiber laser using Bi2Se3 saturable absorber deposited onto arc-shaped and side-polished fibers via airbrush spraying technique." Materials Research Express 11.12 (2024): 126201.
38. Siow, Pei Yi, et al. "Development and implementation of medium-fidelity physics-based model for hybrid digital twin-based damage identification of piping structures." Journal of Civil Structural Health Monitoring 15.3 (2025): 963-984.
39. Ahmad, H., et al. "Zn-MOF as a saturable absorber for thulium/holmium-doped fiber laser." Physica Scripta 99.10 (2024): 105552.
40. Zhu, Hong, et al. "Influence of PCBM Nanocrystals on the Donor-Acceptor Polymer Ultraviolet Phototransistors." Nanomaterials 14.21 (2024): 1748.
41. Najm, Mustafa Mohammed, et al. "Passive Q-switched fiber laser with MAX phase molybdenum titanium aluminum carbide film." Optical and Quantum Electronics 56.1 (2024): 121.
42. Seifaddini, Najmeh, et al. "Aging characterization of thermally aged transformer paper based on its reflectance." Results in Optics 16 (2024): 100716.
43. Falah, Ahmed A. Saleh, et al. "D-shaped PCF with quasi-sinusoidal surface topography for dual-polarization and enhanced performance surface plasmon resonance sensor." Journal of Lightwave Technology 42.10 (2024): 3963-3968.
44. Ahmad, Harith, et al. "Tunable wide spacing all-fiber dual-wavelength holmium-doped fiber laser using a Lyot filter operating above 2 µ m." Laser physics 34.1 (2024): 015102.
45. Abdul Razak, Anis Athirah, et al. "Surface-Enhanced Raman Spectroscopy (SERS) Substrates Based on Photonic Crystal Embedded Bi-Metallic Nanoparticles for Leptospiral DNA Detection." Applied Spectroscopy 79.6 (2025): 986-996.
46. Low, May Lee, et al. "Advancing Sustainable Water Quality Monitoring and Remediation in Malaysia: Innovative Analytical Solutions for Detecting and Removing Emerging Contaminants." ACS ES&T Water 4.11 (2024): 4758-4773.
47. Ahmad, Harith, et al. "Molten fluoride salt-assisted synthesis of titanium carbide (Ti2C) MXene and its application for 2 µm mode-locking in a thulium-doped fiber laser." Laser Physics Letters 21.8 (2024): 085101.

1.         Ahmad, H., et al., High-Power Multi-Wavelength Double-Clad Erbium Ytterbium Co-Doped Fiber Laser Using Two-and Four-Mode Fiber Filters. Ieee Journal of Quantum Electronics, 2023. 59(1).

2.         Ahmad, H., K. Loganathan, and N. Yusoff, Sol-Gel growth of zinc oxide particles on graphene sheets for mode-locking in Thulium/Holmium-doped fiber laser. Physica Scripta, 2023. 98(7).

3.         Ahmad, H., et al., Hydrothermal-assisted synthesis of reduced graphene oxide/zinc oxide nanocomposite for ultrashort pulse generation in 1.5 & mu;m and 2.0 & mu;m spectral regions. Optics and Laser Technology, 2023. 166.

4.         Ahmad, H., et al., Morphology effect of zinc oxide on nonlinear optical properties for soliton mode-locked fiber laser. Optical Materials, 2023. 139.

5.         Ahmad, H., et al., Exploiting evanescent field interaction with magnetic copper ferrite@reduced functionalized graphene oxide for soliton mode-locked pulses generation. Optical Materials, 2023. 143.

6.         Ahmad, H., et al., Synthesis of 2D titanium carbide Ti2C, its characteristics, and nonlinear optical properties. Optical Materials, 2023. 135.

7.         Ahmad, H., et al., Mode-locked operation in thulium-holmium doped fiber laser based on Cr2AlC MAX phase SA coated arc-shaped fiber. Optical and Quantum Electronics, 2023. 55(3).

8.         Ahmad, H., et al., Generation of high-power Q-switched pulses based on arc-shaped fiber and tapered fiber with Sb2Te3 in erbium/ytterbium doped fiber laser. Infrared Physics & Technology, 2023. 129.

9.         Ahmad, H., et al., High power mode-locked erbium-ytterbium doped fiber laser using GIMF-SIMF-GIMF fiber structure as saturable absorber. Optical and Quantum Electronics, 2023. 55(3).

10.       Ahmad, H. and N. Naderi, Enhanced optoelectrical performance of ultraviolet detectors based on self-assembled porous zinc oxide nanostructures. Ceramics International, 2023. 49(6): p. 9316-9323.

11.       Ahmad, H., N. Naderi, and M. Yasin, Ultrafast photoresponse in ultraviolet detectors based on zinc oxide nanorods: the effect of a graphene capping layer. Journal of Materials Science-Materials in Electronics, 2023. 34(1).

12.       Ahmad, H., N. Naderi, and M. Yasin, Design and photovoltaic performance analysis of electrodeposited ZnO microspheres/p-Si heterojunction energy harvesters. Journal of Materials Science-Materials in Electronics, 2023. 34(5).

13.       Ahmad, H., et al., Wavelength-tunable mode-locked laser using zinc phosphate as a saturable absorber at 1.9 mu m. Physica Scripta, 2023. 98(6).

14.       Ahmad, H., et al., Wideband ultrafast mode-locked praseodymium- and erbium-doped fiber lasers using zinc phosphate at 1.3-and 1.5 mu m. Optical Fiber Technology, 2023. 76.

15.       Ahmad, H., et al., Antimonene-based saturable absorber for a soliton mode-locked and Q-switched fiber laser in the 2 mu m wavelength region. Chinese Physics B, 2023. 32(6).

16.       Ahmad, H., et al., Boron carbon oxynitride coated arc-shaped fiber as an optical modulator for passively mode-locked fiber lasers at 1.5 and 2 mu m wavelength. Physica Scripta, 2023. 98(2).

17.       Ahmad, H., M.K.A. Zaini, and M.Z. Samion, Enhanced four-wave mixing with polymer-coated Iron phosphorus trisulfide (FePS3) arc-shaped fiber. Optical and Quantum Electronics, 2023. 55(1).

18.       Aidit, S.N., et al., Hydrothermal synthesis of zinc oxide/PEDOT:PSS composite for flexible temperature sensor application. Flexible and Printed Electronics, 2023. 8(2).

19.       Azam, A.D., et al., Tunable S-band passively Q-switched thulium-doped fluoride fiber laser using Iron Phosphorus Trichalcogenide-PVA (FePS3-PVA) film. Laser Physics, 2023. 33(7).

20.       Chew, J.W., et al., Determination of nonlinear refractive index of large area monolayer MoS2 at telecommunication wavelength using time-resolved Z-scan technique. Journal of Nonlinear Optical Physics & Materials, 2023.

21.       Chew, J.W., et al., Interaction Length-Dependent Saturable Absorption of MoS2-Coated Planarized Waveguide and its Effect on the Performance of Q-Switched Pulse Laser Generation. Journal of Lightwave Technology, 2023. 41(8): p. 2458-2464.

22.       Dan, J.X., et al., Compact Harmonic Vernier Sensor Based on an In-Fiber FPI with Three Reflector System for Simultaneous Gas Pressure and Temperature Measurement. Sensors, 2023. 23(8).

23.       Ee, Y.J., et al., Efficient reconstruction scheme with deep neural network for highly compressive sensing of fiber Bragg grating spectrum. Transactions of the Institute of Measurement and Control, 2023. 45(8): p. 1515-1524.

24.       Ismail, M., et al., Size-dependent of plasmonic gold nanoparticles enhanced on WS2/Si nanohybrids photodetector. Journal of Materials Science-Materials in Electronics, 2023. 34(14).

25.       Jin, K.Z., et al., Three-dimensional force-tactile sensors based on embedded fiber Bragg gratings in anisotropic materials. Optics Letters, 2023. 48(9): p. 2269-2272.

26.       Jin, K.Z., et al., Fiber Bragg grating-based fingertip tactile sensors for normal/shear forces and temperature detection. Sensors and Actuators a-Physical, 2023. 357.

27.       Li, Z.R., et al., High-sensitivity interferometric high-temperature strain sensor based on optical harmonic vernier effect. Optical Fiber Technology, 2023. 79.

28.       Luo, D., et al., Development of Fe-C film coated polymer optical fiber sensor for steel bar corrosion monitoring. Measurement, 2023. 210.

29.       Naderi, N., H. Ahmad, and M. Yasin, Bottom-up self-assembly of macroporous ZnO nanostructures for photovoltaic applications. Ceramics International, 2023. 49(16): p. 26994-27002.

30.       Najm, M.M., et al., Generation of bright-dark pulses in a Q-switched thulium-doped fiber laser by using 8-HQCdCl(2)H(2)O. Optics and Laser Technology, 2023. 164.

31.       Najm, M.M., et al., Performance investigation of erbium-doped fiber laser based on cadmium chloride hydrate saturable absorber. Optical and Quantum Electronics, 2023. 55(8).

32.       Ong, C., et al., Dispersion stability of tin(IV) oxide nanoparticles in polar solvents and water aided by ultrasonication. Japanese Journal of Applied Physics, 2023. 62(3).

33.       Ooi, C.W., et al., Spectral responses of tilted fiber Bragg grating coated with a thin Ge2Sb2Se4Te1 layer. Optics Continuum, 2023. 2(7): p. 1661-1667.

34.       Ramlan, N.A.A., et al., Investigation of passively Q-switched and mode-locked operation using Cu nanoparticles doped Indium Selenide as saturable absorber at 1.5-mu m region. Optical Fiber Technology, 2023. 77.

35.       Rashid, N.N.M., et al., Nanotubes in Chitin Mode Locker for Passive Mode-Locked Fibre Laser in 2.0 mu m Region. Photonics, 2023. 10(3).

36.       Ripain, A.H.A., et al., Highly efficient and stable near-infrared photo sensor based on multilayer MoS2/p-Si integrated with plasmonic gold nanoparticles. Applied Physics Letters, 2023. 123(6).

37.       Rohizat, N.S., et al., Feasibility of Integrating Bimetallic Au-Ag Non-Alloys Nanoparticles Embedded in Reduced Graphene Oxide Photodetector. Photonic Sensors, 2023. 13(3).

38.       Sa'ad, M.S.M., et al., Surface-Mounted Tilt Sensor Using Fiber Bragg Grating Technology for Engineered Slope Monitoring With Temperature Compensation. Ieee Sensors Journal, 2023. 23(12): p. 12828-12837.

39.       Sahib, M., et al., The Ti3SiC2 Max Phase Material for Q-Switched Pulse Generation. Journal of Russian Laser Research, 2023. 44(3): p. 296-302.

40.       Sahib, M., et al., Ti3SiC2 MAX phase for generating mode-locked pulses in 1.5 mu m wavelength region. Microwave and Optical Technology Letters, 2023. 65(8): p. 2464-2469.

41.       Seiffadini, N., et al. Correlation between the Optical Properties and the Degree of Polymerisation of Transformer Insulation Paper. in IEEE Electrical Insulation Conference (EIC). 2023. Quebec, CANADA.

42.       Siow, P.Y., et al., Hybrid machine learning with mode shape assessment for damage identification of plates. Smart Structures and Systems, 2023. 31(5): p. 485-500.

43.       Udos, W., et al., Ge-Sb-Se-Te -coated tilted fiber Bragg gratings sensor for the refractive index measurement of transformer oils. Optical Fiber Technology, 2023. 79.

44.       Zuikafly, S.N.F., et al., Dual Regime Mode-Locked and Q-Switched Erbium-Doped Fiber Laser by Employing Graphene Filament-Chitin Film-Based Passive Saturable Absorber. Micromachines, 2023. 14(5).

45.       Zulkifli, N.A., et al., Sulfurization engineering of single-zone CVD vertical and horizontal MoS2 on p-GaN heterostructures for self-powered UV photodetectors. Nanoscale Advances, 2023. 5(3): p. 879-892.

1.         Ahmad, H., et al., Ti3C2 MXene as an optical modulator in a Thulium/Holmium-doped fiber laser. Optics and Laser Technology, 2022. 149.

2.         Ahmad, H., et al., Strain Sensor Based on Embedded Fiber Bragg Grating in Thermoplastic Polyurethane Using the 3D Printing Technology for Improved Sensitivity. Photonic Sensors, 2022. 12(3).

3.         Ahmad, H., et al., Generation of mode-locked thulium/holmium-doped fiber laser assisted by bismuthene/side polished fiber as saturable absorber. Laser Physics Letters, 2022. 19(7).

4.         Ahmad, H., et al., Solution-processed antimonene integrated arc-shaped fiber for mode-locked pulse laser generation at 1.9 mu m spectral region. Optical Materials, 2022. 131.

5.         Ahmad, H., N.A. Azali, and N. Yusoff, Layered gallium telluride for inducing mode-locked pulse laser in thulium/holmium-doped fiber. Journal of Luminescence, 2022. 248.

6.         Ahmad, H., et al., S-band Mode-locked Thulium-doped fluoride fiber laser using FePS(3 )as saturable absorber. Optical Fiber Technology, 2022. 72.

7.         Ahmad, H., et al., Tunable S-band mode-locked thulium-doped fluoride fiber laser using nickel phosphorus trisulfide (NiPS3) saturable absorber. Photonics and Nanostructures-Fundamentals and Applications, 2022. 52.

8.         Ahmad, H., et al., FePS3-coated arc-shaped fiber as saturable absorber for mode-locked pulsed laser generation at 2.0 mu m spectral region. Optical and Quantum Electronics, 2022. 54(11).

9.         Ahmad, H., et al., Thulium-doped fluoride mode-locked fiber laser based on nonlinear polarization rotation. Optical and Quantum Electronics, 2022. 54(2).

10.       Ahmad, H., et al., Tunable mode-locked thulium doped fiber laser using manganese phosphorus triselenide (MnPSe3) in 2.0 mu m. Journal of Luminescence, 2022. 252.

11.       Ahmad, H., et al., L-band femtosecond fiber laser with Cu2Te-PVA thin film. Laser Physics Letters, 2022. 19(1).

12.       Ahmad, H., et al., Passively mode-locked laser using HfSe2 as saturable absorber at 1.5?m and 2.0?m. Optics and Laser Technology, 2022. 155.

13.       Ahmad, H., et al., Passively Q-switched 1.3 mu m bismuth doped-fiber laser based on transition metal dichalcogenides saturable absorbers. Optical Fiber Technology, 2022. 69.

14.       Ahmad, H., et al., Ti2C MXene for multi-wavelength enhancement in S-band Q-switched thulium doped fluoride fiber laser. Optical Fiber Technology, 2022. 68.

15.       Ahmad, H., et al., Thulium holmium-doped fiber laser mode-locked using Sb2Te3 saturable absorber coated arc-shaped fiber. Infrared Physics & Technology, 2022. 125.

16.       Ahmad, H., et al., Generation of mode-locked pulses based on D-shaped fiber with CdTe as a saturable absorber in the C-band region. Rsc Advances, 2022. 12(14): p. 8637-8646.

17.       Ahmad, H., et al., High power passively mode-locked laser with Sb2Te3 deposited tapered fiber in Er/Yb doped fiber laser. Optical Fiber Technology, 2022. 73.

18.       Ahmad, H., et al., Passively high-power Q-switching in Er- and Er/Yb doped fiber with CdTe. Optics and Laser Technology, 2022. 156.

19.       Ahmad, H., et al., Ultrasensitive flexible ultraviolet detectors based on electrochemically deposited ZnO microspheres synthesized by the assembly of nanoplatelets. Sensors and Actuators a-Physical, 2023. 349.

20.       Ahmad, H., et al., O-band mode-locked praseodymium-doped fluoride fiber laser using nickel phosphorus trisulfide. Optics and Laser Technology, 2023. 160.

21.       Ahmad, H., et al., Tunable Mode-Locked Pulsed Laser Generation at Longer 2.0 mu m Region. Ieee Journal of Quantum Electronics, 2022. 58(5).

22.       Ahmad, H., et al., Tunable multiwavelength Erbium-doped fiber laser based on in-fiber Fabry-Perot interferometer fiber Bragg gratings in linear and ring cavity configurations. Optik, 2022. 262.

23.       Ahmad, H., et al., Thulium/holmium fiber laser with Ti2AlN MAX phase-coated arc-shaped fiber for mode-locked pulse generation. Journal of Nanophotonics, 2022. 16(3).

24.       Ahmad, H., et al., Arc-shaped fiber coated with Ta2AlC MAX phase as mode-locker for pulse laser generation in thulium/holmium doped fiber laser. Optik, 2022. 252.

25.       Ahmad, H., et al., Deposition of Ti2AlC MAX phase onto the side polished fiber as saturable absorber for soliton mode-locked fiber laser generation. Optical and Quantum Electronics, 2022. 54(5).

26.       Ahmad, H., et al., Performance comparison of supercontinuum generation using various tapered fiber waist diameters with a mode-locked fiber laser. Optik, 2023. 272.

27.       Ahmad, H., et al., Enhancement of Four-Wave Mixing and Supercontinuum Generations Aided With Dual Arc-Shaped Fiber With 2D Material. Ieee Journal of Quantum Electronics, 2022. 58(6).

28.       Ahmad, H., et al., Generation of Mode-Locked Thulium-Doped Fiber Laser in 2.0-mu m Wavelength Operation by Polymer-Coated Iron Phosphorus Trisulfide (FePS3)-Based Saturable Absorber. Ieee Journal of Quantum Electronics, 2022. 58(2).

29.       Al-Azzawi, A.A., et al., Corrigendum to 'An efficient wideband hafnia-bismuth erbium co-doped fiber amplifier with flat-gain over 80 nm wavelength span' Optical Fiber Technol.(vol 48,pg 186,2019). Optical Fiber Technology, 2023. 75.

30.       Alias, M.A., et al., Highly sensitive temperature-independent FBG-based sensor embedded in thermoplastic polyurethane using 3D printing technology for the measurements of torsion. Sensors and Actuators a-Physical, 2022. 346.

31.       Alias, M.A., et al., A Hi h-Precision Extensometer System for Ground Displacement Measurement Using Fiber Bragg Grating. Ieee Sensors Journal, 2022. 22(9): p. 8509-8521.

32.       Almukhtar, A.A., et al., "Flat-gain and wide-band partial double-pass erbium co-doped fiber amplifier with hybrid gain medium " (vol 52, pg 101952, 2019). Optical Fiber Technology, 2023. 75.

33.       Apandi, N.H.M., et al., Observation of soliton and bound soliton in erbium-doped fiber lasers using single-walled carbon nanotubes mode-lockers under gamma irradiation. Optics and Laser Technology, 2023. 157.

34.       Ashour, M., et al., Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation. Nanomaterials, 2022. 12(17).

35.       Aziz, M.S., et al., Glucose oxidase-based enzyme immobilised on tapered optical fibre for reliability improvement in selective glucose sensing. Optik, 2022. 259.

36.       Chew, J.W., et al., Saturable absorption performance of large area monolayer MoS2 coated planarized optical waveguide. Laser Physics Letters, 2022. 19(11).

37.       Dang, W.J., et al., High sensitivity fiber Bragg grating (FBG) sensor based on hollow core silica tube (HCST) sensitization for gas pressure and temperature discrimination. Optical Fiber Technology, 2023. 75.

38.       Ee, Y.J., et al., Highly sensitive vernier sensor based on Chirp Grating Fabry-Perot Interferometer (CG-FPI) for the strain detection in lithium polymer (LiPo) batteries. Sensors and Actuators a-Physical, 2023. 350.

39.       Fahri, M., et al., Nonlinear optical response of zinc oxide nanorods with gold and silver alloy embedment. Physica B-Condensed Matter, 2022. 637.

40.       Gan, S., et al., Polarization response of planarized optical waveguides to determine the anisotropic complex refractive index of graphene oxide thin films. Applied Optics, 2022. 61(3): p. 744-750.

41.       Gan, S.X., et al., Graphene oxide enhanced phase change tolerance of Ge2Sb2Se4Te1 for all-optical multilevel non-volatile photonics memory. Journal of the Optical Society of America B-Optical Physics, 2022. 39(11).

42.       Ishak, N.I., S.V. Muniandy, and W.Y. Chong, Quantum Walk in Noisy Environment: Dynamics at the Borders of Quantum-Classical Transition. Jurnal Fizik Malaysia, 2022. 43(1): p. 10139-10150.

43.       Kwong, K.Z., et al., Spectral analysis for tilted fiber Bragg gratings in the corrosion detection for concrete structure. Optica Applicata, 2022. 52(3): p. 429-439.

44.       Lai, C.K., et al., Methodology for Fabrication-Tolerant Planar Directional Couplers. Ieee Photonics Journal, 2022. 14(3).

45.       Liang, H.Q., et al., High performance ultraviolet photodiode based on thin DPPT-TT donor-acceptor organic polymer. Applied Physics Letters, 2022. 121(20).

46.       Liu, X., et al., Ultrasensitive parallel double-FPIs sensor based on Vernier effect and Type II fiber Bragg grating for simultaneous measurement of high temperature and strain. Optics Communications, 2022. 508.

47.       Marlinda, A., et al., Recent progress in nitrates and nitrites sensor with graphene-based nanocomposites as electrocatalysts. Trends in Environmental Analytical Chemistry, 2022. 34.

48.       Muniandy, S.V., N.I. Ishak, and C.W. Yi, Entropy fluctuation and correlation transfer in tunable discrete-time quantum walk with fractional Gaussian noise. Physical Review E, 2022. 106(2).

49.       Ng, K.B., et al., Single-mode SU-8 waveguide fabricated using ultrafast direct laser writing. Optik, 2022. 270.

50.       Noor, S., et al., Dual-wavelength Q-switched erbium-doped fiber laser using an SMF-MMF-SMF structure and graphene oxide. Optoelectronics Letters, 2022. 18(11): p. 668-672.

51.       Ooi, C.W., et al., Novel Schiff base functionalized 80-?m tilted fiber Bragg grating chemosensor for copper(II) ion detection. Optical Fiber Technology, 2022. 71.

52.       Ooi, C.W., et al., L-cysteine grafted fiber-optic chemosensor for heavy metal detection. Optical Fiber Technology, 2022. 71.

53.       Ooi, S.I. and H. Ahmad, Thermal release tape assisted mechanical exfoliation of pristine TMD and the performance of the exfoliated TMD saturable absorbers for Q-switched laser generation. Optical Materials, 2022. 128.

54.       Patel, S.K., et al., Graphene based highly sensitive refractive index sensor using double split ring resonator metasurface. Optical and Quantum Electronics, 2022. 54(3).

55.       Ramlan, N., et al., Generation of soliton operating at 1.5 mu m regime using Indium Selenide based saturable absorber. Optik, 2022. 271.

56.       Ramlan, N.A.A., et al., Indium Selenide as passive saturable absorber for Q-switching in Erbium-doped fiber lasers. Optical Fiber Technology, 2022. 72.

57.       Ripain, A.H.A., et al., Tailoring of optical and wetting properties of electron beam deposited Ag nanostructure films by oblique angle deposition. Journal of Optics-India, 2022.

58.       Ripain, A.H.A., et al., Contributions of symmetric metal contacts on liquid exfoliation 2D-MoS2 flakes based MSM photodetector by spray pyrolysis: a CVD-free technique. Optical and Quantum Electronics, 2022. 54(12).

59.       Sa'ad, M.S.M., et al., Temperature-independent vibration sensor based on Fabry-Perot interferometer using a fiber Bragg grating approach. Optical Engineering, 2022. 61(3).

60.       Samad, F.A., et al., Investigating the influence of ITO thin film thickness on the optical Kerr nonlinearity using ultrashort laser pulses. Journal of the Optical Society of America B-Optical Physics, 2022. 39(5): p. 1388-1399.

61.       Saw, W.S., et al., Nanoscaled PAMAM Dendrimer Spacer Improved the Photothermal-Photodynamic Treatment Efficiency of Photosensitizer-Decorated Confeito-Like Gold Nanoparticles for Cancer Therapy. Macromolecular Bioscience, 2022. 22(8).

62.       Teoh, B.Y., et al., Isolation of exosome from the culture medium of Nasopharyngeal cancer (NPC) C666-1 cells using inertial based Microfluidic channel. Biomedical Microdevices, 2022. 24(1).

63.       Tian, Q., et al., Optical Fiber Sensor With Double Tubes for Accurate Strain and Temperature Measurement Under High Temperature up to 1000 degrees C. Ieee Sensors Journal, 2022. 22(12): p. 11710-11716.

64.       Tiu, Z.C., et al., Review: Dark pulse generation in fiber laser system. Optics and Laser Technology, 2022. 151.

65.       Tiu, Z.C., et al., Tungsten disulfide coated side-polished fibre as polarisation state modulator in all-optical system. Iet Optoelectronics, 2022. 16(5): p. 195-200.

66.       Tiu, Z.C., et al., Photon-to-photon polarization modulation using Mxene thin film as modulator. Electronics Letters, 2022. 58(9): p. 366-368.

67.       Tiu, Z.C., et al., Development of polarization modulator using MXene thin film. Scientific Reports, 2022. 12(1).

68.       Wang, X., et al., Effects of various pulse width laser with 1064 nm wavelength on thermal ablation and phase transition of monocrystalline silicon. Experimental Heat Transfer, 2023. 36(5): p. 632-647.

69.       Yap, Y., et al., Performance of Q-Switched Fiber Laser Using Optically Deposited Reduced Graphene Oxide as Saturable Absorber. Fiber and Integrated Optics, 2022. 41(1-2): p. 26-40.

70.       Zakaria, R., et al., Exploration of multi-metallic thin layer/MgF2 in side-polished optical fiber as long-range surface plasmons (LRSPs) alcohol sensor. Optical and Quantum Electronics, 2022. 54(4).

1. Ahmad, H., et al., 1.3 mu m dissipative soliton resonance generation in Bismuth doped fiber laser. Scientific Reports, 2021. 11(1).
2. Ahmad, H., et al., Tunable Dual-Wavelength Bismuth Fiber Laser With 37.8-GHz Frequency Spacing. Journal of Lightwave Technology, 2021. 39(20): p. 6617-6623.
3. Ahmad, H., et al., 1.9 mu m mode-locked fiber laser based on evanescent field interaction with metallic vanadium diselenide (VSe2). Optik, 2021. 230.
4. Ahmad, H., N.A. Azali, and N. Yusoff, Liquid phase exfoliation of hafnium diselenide and its role in initiating the mode-locked pulse laser at eye-safe wavelength region. Optical Materials, 2022. 123. 
5. Ahmad, H., et al., Cu2Te-PVA as saturable absorber for generating Q-switched erbium-doped fiber laser. Optical and Quantum Electronics, 2021. 53(4). 
6. Ahmad, H., et al., MoTe2-PVA as saturable absorber for passively Q-switched thulium-doped fluoride and erbium-doped fiber laser. Optik, 2021. 243.
7. Ahmad, H., et al., 1.3 mu m passively Q-Switched bismuth doped fiber laser using Nb2C saturable absorber. Optical Materials, 2021. 116.
8. Ahmad, H., et al., 2 mu m passively mode-locked thulium-doped fiber lasers with Ta2AlC-deposited tapered and side-polished fibers. Scientific Reports, 2021. 11(1).
9. Ahmad, H., et al., The effect of carboxymethylcellulose host concentration on the performance of mode-locked pulsed laser generation. Optical Materials, 2021. 122.
10. Ahmad, H., et al., Passively mode-locked thulium-holmium co-doped fiber laser using hybrid side polished fiber with MoWS2-rGO nanocomposite. Optical Fiber Technology, 2021. 62.
11. Ahmad, H., et al., 2.08 mu m Q-switched holmium fiber laser using niobium carbide-polyvinyl alcohol (Nb2C-PVA) as a saturable absorber. Optics Communications, 2021. 490.
12. Ahmad, H., et al., The performance of Ti2C MXene and Ti2AlC MAX Phase as saturable absorbers for passively mode-locked fiber laser. Optical Fiber Technology, 2021. 67.
13. Ahmad, H., et al., Thulium-holmium doped fiber laser mode-locking with hafnium disulfide (HfS2) coated on D-shaped fiber. Optik, 2021. 246.
14. Ahmad, H., et al., Multi-wavelength Bismuth-doped fiber laser in 1.3 mu m based on a compact two-mode fiber filter. Optics and Laser Technology, 2021. 144.
15. Ahmad, H., et al., Generation of four-wave mixing with nonlinear Vanadiumcarbide (V2C)deposited sidepolished fiber (SPF) in 1.5 and 2.0 mu m wavelength operation. Optics and Laser Technology, 2022. 145.
16. Ahmad, H., et al., 1.5 and 2.0 mu m all-optical modulators based on niobium-carbide (Nb2C)-PVA film. Laser Physics Letters, 2021. 18(8).
17. Ahmad, H., et al., Passively mode locked thulium and thulium/holmium doped fiber lasers using MXene Nb2C coated microfiber. Scientific Reports, 2021. 11(1).
18. Ahmad, H., et al., Mode-locked thulium/holmium-doped fiber laser with vanadium carbide deposited on tapered fiber. Optical Fiber Technology, 2021. 65.
19. Ahmad, H., et al., Mode-locked thulium/holmium co-doped fiber laser using WTe2-covered tapered fiber. Optik, 2021. 245.
20. Ahmad, H., et al., Performance of Nb2C MXene coated on tapered fiber as saturable absorber for the generation of Mode-Locked Erbium-Doped fiber laser. Infrared Physics & Technology, 2021. 114.
21. Ahmad, H., A.S. Sharbirin, and M.M. Ariannejad, Double-side polished fiber for generation of mode-locked fiber lasers. Optics Communications, 2021. 479.
22. Ahmad, H., et al., Niobium carbide (Nb2C) MXene as a saturable absorber to assist in the generation of a wavelength tunable passively Q-switched fiber laser. Laser Physics Letters, 2021. 18(6).
23. Ahmad, H., et al., Generation of four-wave mixing in molybdenum ditelluride (MoTe2)-deposited side-polished fibre. Journal of Modern Optics, 2021. 68(8): p. 425-432.
24. Gan, S.X., et al., Optical phase transition of using low absorption wavelength in the 1550 nm window. Optical Materials, 2021. 120.
25. Ishak, N.I., S.V. Muniandy, and W.Y. Chong, Entropy analysis of the discrete-time quantum walk under bit-flip noise channel. Physica a-Statistical Mechanics and Its Applications, 2021. 584.
26. Ismail, N.N., et al., Biaxial 3D-Printed Inclinometer Based on Fiber Bragg Grating Technology. Ieee Sensors Journal, 2021. 21(17): p. 18815-18822.
27. Ismail, N.N., et al., Novel 3D-printed biaxial tilt sensor based on fiber Bragg grating sensing approach. Sensors and Actuators a-Physical, 2021. 330.
28. Kamkar, A., et al., Long-Range Surface Plasmon Resonance-Based Sensitivity Study on D-shaped Ag-MgF2-Coated Models with Analyte Variations. Plasmonics, 2022. 17(1): p. 277-286.
29. Lai, C.K., et al., Hybrid Chalcogenide-Germanosilicate Waveguides for High Performance Stimulated Brillouin Scattering Applications. Advanced Functional Materials, 2022. 32(3).
30. Lim, K.S., et al., Vibration Mode Analysis for a Suspension Bridge by Using Low-Frequency Cantilever-Based FBG Accelerometer Array. Ieee Transactions on Instrumentation and Measurement, 2021. 70.
31. Luo, D., et al., Tapered Polymer Optical Fiber Sensors for Monitoring the Steel Bar Corrosion. Ieee Transactions on Instrumentation and Measurement, 2021. 70.
32. Ooi, C.W., et al., Signal Demodulation for Surface Plasmon Resonance Tilted Fiber Bragg Grating Based on Root Sum Squared Method. Ieee Transactions on Instrumentation and Measurement, 2021. 70.
33. Patel, S.K., et al., Graphene-Based Plasmonic Absorber for Biosensing Applications Using Gold Split Ring Resonator Metasurfaces. Journal of Lightwave Technology, 2021. 39(17): p. 5617-5624.
34. Patel, S.K., et al., Sensitivity Analysis of Metasurface Array-Based Refractive Index Biosensors. Ieee Sensors Journal, 2021. 21(2): p. 1470-1477.
35. Radzi, N.M., et al., Tunable Spacing Dual-Wavelength Q-Switched Fiber Laser Based on Tunable FBG Device. Photonics, 2021. 8(12).
36. Rashid, H., et al., Fabrication of a carbon nanotube/tungsten disulfide visible spectrum photodetector. Applied Optics, 2021. 60(10): p. 2839-2845.
37. Rohizat, N.S., et al., Plasmon-enhanced reduced graphene oxide photodetector with monometallic of Au and Ag nanoparticles at VIS-NIR region. Scientific Reports, 2021. 11(1).
38. Rusdi, M.F.M., et al., Generation of Q-switched fiber laser at 1.0-, 1.55-and 2.0-mu m employing a spent coffee ground based saturable absorber. Optical Fiber Technology, 2021. 61.
39. Sharbirin, A.S., et al., 3D-Printed Tilt Sensor Based on an Embedded Two-Mode Fiber Interferometer. Ieee Sensors Journal, 2021. 21(6): p. 7565-7571.
40. Siow, P.Y., et al., Damage Sensitive PCA-FRF Feature in Unsupervised Machine Learning for Damage Detection of Plate-Like Structures. International Journal of Structural Stability and Dynamics, 2021. 21(2).
41. Tan, D., et al., Multivariate Regression Between Hounsfield Unit Shift, Tissue Temperature, and Tissue Contraction: A Feasibility Study of Computed Tomography Thermometry. Ieee Transactions on Instrumentation and Measurement, 2021. 70.
42. Tan, S.J., H. Ahmad, and Z.C. Tiu, All-fibre phase shifter based on tapered fibre coated with MoWS2-rGO. Iet Optoelectronics, 2021. 15(6): p. 264-269.
43. Tang, L.W., et al., Progress in Electrochemical Sensing of Heavy Metals Based on Amino Acids and Its Composites. Critical Reviews in Analytical Chemistry, 2023. 53(4): p. 869-886.
44. Udos, W., et al., Label-free surface-plasmon resonance fiber grating biosensor for Hand-foot-mouth disease (EV-A71) detection. Optik, 2021. 228.
45. Yap, Y.K., et al., Simple Fabrication of Paper-like Graphene Oxide for use as Saturable Absorber in Q-switching of Fiber Laser. Journal of Applied Science and Engineering, 2021. 24(4): p. 509-516.
46. Zakaria, R., et al., High sensitivity refractive index sensor in long-range surface plasmon resonance based on side polished optical fiber. Optical Fiber Technology, 2021. 61.
47. Zhu, J.J., et al., Double F-P Interference Optical Fiber High Temperature Gas Pressure Sensor Based on Suspended Core Fiber. Ieee Sensors Journal, 2021. 21(23): p. 26805-26813.
48. Zuikafly, S.N.F., et al., Graphene-chitin bio-composite polymer based mode locker at 2 micron region. Optik, 2021. 245.

1. H. H. Abd Raziff et al., "A Temperature-Controlled Laser Hot Needle with Grating Sensor for Liver Tissue Tract Ablation," (in English), IEEE Trans. Instrum. Meas., Article vol. 69, no. 9, pp. 7119-7124, Sept 2020.
2. H. Ahmad, M. H. M. Ahmed, M. Z. Samion, and S. W. Harun, "All fiber multiwavelength Tm-doped double-clad fiber laser assisted by four-wave mixing in highly nonlinear fiber and Sagnac loop mirror," (in English), Opt. Commun., Article vol. 456, p. 5, Feb 2020.
3. H. Ahmad, M. H. M. Ahmed, N. Yusoff, R. Ramli, and M. Z. Samion, "All fiber normal dispersion mode locked ytterbium doped double-clad fiber laser using fiber taper with WS2-ZnO saturable absorber," (in English), Opt. Laser Technol., Article vol. 130, p. 7, Oct 2020.
4. H. Ahmad, S. N. Aidit, and M. Z. Samion, "Multi- and dual-wavelength Thulium-doped fluoride fiber laser assisted by four-wave mixing in S-band region," (in English), Infrared Phys. Technol., Article vol. 111, p. 6, Dec 2020.
5. H. Ahmad et al., "All-fiberized, mode-locked laser at 1.95 mu m using copper chalcogenide Cu2Te-based evanescent field interaction," (in English), Opt. Commun., Article vol. 476, p. 6, Dec 2020.
6. H. Ahmad and A. W. Al-Alimi, "Wide multiwavelength Brillouin-Raman fiber laser assisted by an arc-shaped fiber attenuator," (in English), Appl. Optics, Article vol. 59, no. 7, pp. 1876-1884, Mar 2020.
7. H. Ahmad, A. W. Al-Alimi, M. Z. B. Kadir, L. Bayang, M. F. Ismail, and K. Thambiratnam, "Frequency switching multiwavelength Brillouin Raman fibre laser based on feedback power adjustment technique," (in English), J. Mod. Opt., Article vol. 67, no. 11, pp. 951-957, Jun 2020.
8. H. Ahmad, H. S. Albaqawi, N. Yusoff, L. Bayang, M. Z. B. Kadir, and C. W. Yi, "Tunable passively Q-switched erbium-doped fiber laser based on Ti3C2Tx MXene as saturable absorber," (in English), Opt. Fiber Technol., Article vol. 58, p. 8, Sep 2020.
9. H. Ahmad, H. S. Albaqawi, N. Yusoff, S. A. Reduan, and C. W. Yi, "Reduced Graphene Oxide-Silver Nanoparticles for Optical Pulse Generation in Ytterbium- and Erbium-Doped Fiber Lasers," (in English), Sci Rep, Article vol. 10, no. 1, p. 11, Jun 2020.
10. H. Ahmad, H. S. Albaqawi, N. Yusoff, and C. W. Yi, "56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe2) Saturable Absorber," (in English), Sci Rep, Article vol. 10, no. 1, p. 10, Jun 2020.
11. H. Ahmad, H. S. M. Albaqawi, N. Yusoff, W. Y. Chong, and M. Yasin, "Q-Switched Fiber Laser at 1.5 mu m Region Using Ti3AlC2 MAX Phase-Based Saturable Absorber," (in English), IEEE J. Quantum Electron., Article vol. 56, no. 2, p. 6, Apr 2020.
12. H. Ahmad, M. M. Ariannejad, R. Ramli, N. Yusoff, M. Z. Samion, and L. Bayang, "Growth of magnetic binary metal oxides on reduced graphene oxide sheets and its application as saturable absorber in mode-locked Tm/Ho Co-doped fiber laser," (in English), Opt. Mater., Article vol. 109, p. 7, Nov 2020.
13. H. Ahmad, N. F. Azmy, S. N. Aidit, and M. Z. Zulkifli, "Stable multiwavelength semiconductor optical amplifier-based fiber laser using a 2-mode interferometer," (in English), Microw. Opt. Technol. Lett., Article vol. 62, no. 10, pp. 3363-3368, Oct 2020.
14. H. Ahmad, N. F. Azmy, A. N. Azmi, M. Z. Zulkifli, and M. F. Ismail, "Configurable triple wavelength semiconductor optical amplifier fiber laser using multiple broadband mirrors," (in English), Microw. Opt. Technol. Lett., Article vol. 62, no. 1, pp. 46-52, Jan 2020.
15. H. Ahmad et al., "Passively Q-switched S plus /S band fiber laser with copper telluride saturable absorber," (in English), Laser Phys. Lett., Article vol. 17, no. 9, p. 10, Sep 2020.
16. H. Ahmad et al., "Tunable passively Q-switched thulium doped fluoride fibre (TDFF) laser using reduced graphene oxide-silver (rGO-Ag) as saturable absorber," (in English), J. Mod. Opt., Article vol. 67, no. 11, pp. 1022-1030, Jun 2020.
17. H. Ahmad, N. N. Ismail, S. N. Aidit, L. Bayang, and N. Yusoff, "Q-switched tunable ytterbium-doped fiber laser with molybdenum ditelluride-based saturable absorber," (in English), Opt. Eng., Article vol. 59, no. 5, p. 10, May 2020.
18. H. Ahmad, N. N. Ismail, S. N. Aidit, N. Yusoff, R. Ramli, and A. K. Zamzuri, "Soliton passively mode-locked pulses generation in thulium-holmium doped fiber laser (THDFL) with molybdenum oxide saturable absorber," (in English), Opt. Fiber Technol., Article vol. 60, p. 7, Dec 2020.
19. H. Ahmad, N. N. Ismail, S. N. Aidit, N. Yusoff, and M. Z. Zulkifli, "Tunable S+/S band Q-switched thulium-doped fluoride fiber laser using tungsten ditelluride (WTe2)," (in English), Results Phys., Article vol. 17, p. 7, Jun 2020.
20. H. Ahmad, A. A. Kamely, and M. Z. Samion, "S/S+-band tunable dual-wavelength thulium doped fluoride fiber laser," (in English), Infrared Phys. Technol., Article vol. 105, p. 5, Mar 2020.
21. H. Ahmad, A. A. Kamely, N. Yusoff, L. Bayang, and M. Z. Samion, "Generation of Q-switched Pulses in Thulium-doped and Thulium/Holmium-co-doped Fiber Lasers using MAX phase (Ti3AlC2)," (in English), Sci Rep, Article vol. 10, no. 1, p. 10, Jun 2020.
22. H. Ahmad, H. Monajemi, M. Z. Samion, M. F. Ismail, and K. Thambiratnam, "Tunable Q-switched ytterbium-doped fibre laser with Nickel Oxide saturable absorber," (in English), Indian J. Phys., Article; Early Access p. 6, Mar 2020.
23. H. Ahmad et al., "Passively Q-switched thulium fluoride fiber laser operating in S-band region using N-doped graphene saturable absorber," (in English), Indian J. Phys., Article; Early Access p. 6, July 2020.
24. H. Ahmad et al., "GeSe Evanescent Field Saturable Absorber for Mode-Locking in a Thulium/Holmium Fiber Laser," (in English), IEEE J. Quantum Electron., Article vol. 56, no. 5, p. 8, Oct. 2020.
25. H. Ahmad, R. Ramli, S. A. Reduan, K. Thambiratnam, and M. F. Ismail, "MoSSe-based passively modulated erbium doped fiber laser," (in English), Laser Phys., Article vol. 30, no. 9, p. 9, Sep 2020.
26. H. Ahmad et al., "155 nm-wideband and tunable q-switched fiber laser using an MXene Ti(3)C(2)T(X)coated microfiber based saturable absorber," (in English), Laser Phys. Lett., Article vol. 17, no. 8, p. 11, Aug 2020.
27. H. Ahmad, M. Z. Samion, A. A. Kamely, S. Y. Wang, Y. Wang, and J. K. Sahu, "Multiwavelength Brillouin Generation in Bismuth-Doped Fiber Laser With Single- and Double-Frequency Spacing," (in English), J. Lightwave Technol., Article vol. 38, no. 24, pp. 6886-6896, Dec 2020.
28. H. Ahmad, M. Tajdidzadeh, M. F. Ismail, and T. M. K. Thandavan, "Fast response infrared photodetector based on reduced graphene oxide," (in English), Optoelectron. Adv. Mater.-Rapid Commun., Article vol. 14, no. 3-4, pp. 105-112, Mar-Apr 2020.
29. H. Ahmad and T. M. K. Thandavan, "High photoresponsivity and external quantum efficiency of ultraviolet photodetection by mechanically exfoliated planar multi-layered graphene oxide sheet prepared using modified Hummer's method and spin coating technique," (in English), Mater. Express, Article vol. 10, no. 7, pp. 998-1009, Jul 2020.
30. H. Ahmad, N. Yusoff, H. S. Lim, M. Z. M. Jafri, M. Z. Zulkifli, and Z. C. Tiu, "Temporal and amplitude modulation at C-band region using Bi2Te3-based optical modulator," (in English), J. Mod. Opt., Article vol. 67, no. 7, pp. 638-646, Apr 2020.
31. M. T. Ahmad, A. R. Muhammad, R. Zakaria, H. Ahmad, and S. W. Harun, "Electron beam deposited silver (Ag) saturable absorber as passive Q-switcher in 1.5-and 2-micron fiber lasers," (in English), Optik, Article vol. 207, p. 10, Apr 2020.
32. A. A. Al-Azzawi et al., "Gain-flattened hybrid EDFA operating in C plus L band with parallel pumping distribution technique," (in English), IET Optoelectron., Article vol. 14, no. 6, pp. 447-451, Dec 2020.
33. A. A. Almukhtar et al., "Enhanced triple-pass hybrid erbium doped fiber amplifier using distribution pumping scheme in a dual-stage configuration," (in English), Optik, Article vol. 204, p. 6, Feb 2020.
34. M. M. Ariannejad, E. Akbari, M. Niazi, and E. Hanafi, "Urea sensor by racetrack silicon resonator," (in English), Optik, Article vol. 208, p. 7, Apr 2020.
35. S. R. Azzuhri et al., "Investigation of U-shaped microfiber temperature sensor using a combination of thermal expansion of a metal and reflectivity of a silver coated mirror," (in English), Optik, Article vol. 205, p. 7, Mar 2020.
36. S. L. Chen, Z. C. Ong, W. H. Lam, K. S. Lim, and K. W. Lai, "Operational Damage Identification Scheme Utilizing De-Noised Frequency Response Functions and Artificial Neural Network," (in English), J. Nondestruct. Eval., Article vol. 39, no. 3, p. 9, Aug 2020.
37. S. L. Chen, Z. C. Ong, W. H. Lam, K. S. Lim, and K. W. Lai, "Unsupervised Damage Identification Scheme Using PCA-Reduced Frequency Response Function and Waveform Chain Code Analysis," (in English), Int. J. Struct. Stab. Dyn., Article vol. 20, no. 8, p. 26, Jul 2020.
38. W. S. Chong, S. X. Gan, H. M. Al-Tuwirit, W. Y. Chong, C. S. Lim, and H. Ahmad, "Nanolitre solution drop-casting for selective area graphene oxide coating on planar surfaces," (in English), Mater. Chem. Phys., Article vol. 249, p. 7, Jul 2020.
39. W. S. Chong et al., "Configurable TE- and TM-Pass Graphene Oxide-Coated Waveguide Polarizer," (in English), IEEE Photonics Technol. Lett., Article vol. 32, no. 11, pp. 627-630, Jun 2020.
40. S. X. Gan, C. K. Lai, W. S. Chong, W. Y. Chong, S. Madden, and H. Ahmad, "Large polarization response of planarized optical waveguide functionalized with 2D material overlays," (in English), J. Mod. Opt., Article vol. 67, no. 8, pp. 730-736, May 2020.
41. K. S. Hamdan, S. M. Abdullah, N. A. Talik, K. Sulaiman, and R. Zakaria, "Surface plasmon resonance of silver nano-dendrites improved light absorption in an organic photovoltaic active layer," (in English), Micro Nano Lett., Article vol. 15, no. 12, pp. 866-871, Oct 2020.
42. Z. Harith, M. Batumalay, N. Irawati, S. W. Harun, H. Ahmad, and T. P. Hu, "ZnO nanorod-coated tapered plastic fiber sensors for relative humidity," (in English), Opt. Commun., Article vol. 473, p. 6, Oct 2020.
43. N. I. Ishak, S. V. Muniandy, and W. Y. Chong, "Scaling exponent analysis and fidelity of the tunable discrete quantum walk in the noisy channel," (in English), Physica A, Article vol. 559, p. 11, Dec 2020.
44. N. S. Ishak, M. H. Dahri, N. A. Awang, W. Y. Chong, and F. C. Seman, "Realization of Circular Slot Frequency Selective Surfaces using Photoplotter and Wet Etching Technique for Terahertz Material Sensing Applications," (in English), Int. J. Integr. Eng., Article vol. 12, no. 6, pp. 49-54, 2020.
45. N. Ismail et al., "Fiber Bragg Grating-Based Fabry-Perot Interferometer Sensor for Damage Detection on Thin Aluminum Plate," (in English), IEEE Sens. J., Article vol. 20, no. 7, pp. 3564-3571, Apr 2020.
46. W. H. Lim, Y. Yap, C. Lai, W. Y. Chong, and H. Ahmad, "Graphene Oxide Functionalized Optical Planar Waveguide for Water Content Measurement in Alcohol," (in English), Photonic Sens., Article vol. 10, no. 3, pp. 215-222, Sep 2020.
47. A. R. Marlinda et al., "Gold nanorods-coated reduced graphene oxide as a modified electrode for the electrochemical sensory detection of NADH," (in English), J. Alloy. Compd., Article vol. 847, p. 9, Dec 2020.
48. A. R. Marlinda, N. Yusoff, S. Sagadevan, and M. R. Johan, "Recent developments in reduced graphene oxide nanocomposites for photoelectrochemical water-splitting applications," (in English), Int. J. Hydrog. Energy, Review vol. 45, no. 21, pp. 11976-11994, Apr 2020.
49. S. A. Mitu et al., "Fe3O4 nanofluid injected photonic crystal fiber for magnetic field sensing applications," (in English), J. Magn. Magn. Mater., Article vol. 494, p. 7, Jan 2020.
50. N. A. M. Nazal, D. Tan, K. S. Lim, H. Z. Yang, and H. Ahmad, "Regenerated Chirped Grating-Michelson Interferometer as a Laser Beam Intensity Profiler for CO2 Laser," (in English), IEEE Trans. Instrum. Meas., Article vol. 69, no. 2, pp. 559-564, Feb 2020.
51. K. B. Ng, J. W. Chew, W. Y. Chong, C. S. Lim, and H. Ahmad, "Surface ablation of poly allyl diglycol carbonate polymer using high-repetition-rate femtosecond laser," (in English), Opt. Eng., Article vol. 59, no. 5, p. 7, May 2020.
52. S. K. Patel et al., "Graphene-Based Highly Sensitive Refractive Index Biosensors Using C-Shaped Metasurface," (in English), IEEE Sens. J., Article vol. 20, no. 12, pp. 6359-6366, Jun 2020.
53. S. K. Patel et al., "Design of graphene metasurface based sensitive infrared biosensor," (in English), Sens. Actuator A-Phys., Article vol. 301, p. 9, Jan 2020.
54. S. K. Patel, J. Parmar, H. Trivedi, R. Zakaria, T. K. Nguyen, and V. Dhasarathan, "Highly Sensitive Graphene-Based Refractive Index Biosensor Using Gold Metasurface Array," (in English), IEEE Photonics Technol. Lett., Article vol. 32, no. 12, pp. 681-684, Jun 2020.
55. B. K. Paul et al., "The design and analysis of a dual-diamond-ring PCF-based sensor," (in English), J. Comput. Electron., Article vol. 19, no. 3, pp. 1288-1294, Sep 2020.
56. J. Rabinowitz, M. Rezaei, M. S. Park, C. L. Tan, M. Ulmer, and H. Mohseni, "When shot-noise-limited photodetectors disobey Poisson statistics," (in English), Opt. Lett., Article vol. 45, no. 11, pp. 3009-3012, Jun 2020.
57. N. M. Radzi et al., "Q-switched fiber laser based on CdS quantum dots as a saturable absorber," (in English), Results Phys., Article vol. 16, p. 7, Mar 2020.
58. S. Sagadevan et al., "Effect of Synthesis Temperature on the Morphologies, Optical and Electrical Properties of MgO Nanostructures," (in English), J. Nanosci. Nanotechnol., Article vol. 20, no. 4, pp. 2488-2494, Apr 2020.
59. A. S. Sharbirin, H. Ahmad, and M. F. Ismail, "Q-switched Thulium-doped fiber laser at 1860 nm and 1930 nm using a Holmium-doped fiber as an amplified spontaneous emission filter," (in English), Opt. Laser Technol., Article vol. 123, p. 8, Mar 2020.
60. N. A. Siddiq, W. Y. Chong, Y. H. Pramono, M. S. Muntini, A. Asnawi, and H. Ahmad, "All-Optical Humidity Sensor Using SnO2 Nanoparticle Drop Coated on Straight Channel Optical Waveguide," (in English), Photonic Sens., Article vol. 10, no. 2, pp. 123-133, Jun 2020.
61. Q. Tian et al., "Cascaded Fabry-Perot interferometer-regenerated fiber Bragg grating structure for temperature-strain measurement under extreme temperature conditions," (in English), Opt. Express, Article vol. 28, no. 21, pp. 30478-30488, Oct 2020.
62. Q. Tian, H. Z. Yang, K. S. Lim, Y. D. He, H. Ahmad, and X. C. Liu, "Temperature and strain response of in-fiber air-cavity Fabry-Perot interferometer under extreme temperature condition," (in English), Optik, Article vol. 220, p. 6, Oct 2020.
63. Z. C. Tiu, H. Haris, H. Ahmad, and S. J. Tan, "All fiber temperature sensor based light polarization measurement utilizing graphene coated tapered fiber," (in English), Microw. Opt. Technol. Lett., Article; Early Access p. 5, Nov 2020.
64. W. Udos, Y. S. Lee, K. S. Lim, Z. C. Ong, M. K. A. Zaini, and H. Ahmad, "Signal enhancement of FBG-based cantilever accelerometer by resonance suppression using magnetic damper," (in English), Sens. Actuator A-Phys., Article vol. 304, p. 7, Apr 2020.
65. P. F. Wang et al., "NiS2 as a broadband saturable absorber for ultrafast pulse lasers," (in English), Opt. Laser Technol., Article vol. 132, p. 10, Dec 2020.
66. M. K. A. Zaini, Y. S. Lee, K. S. Lim, N. A. M. Nazal, H. Z. Yang, and H. Ahmad, "Thermal characterization of phase difference among the LP modes in two-mode fibers based on numerical approach," (in English), Optik, Article vol. 207, p. 6, Apr 2020.
67. R. Zakaria, M. H. Mezher, A. Z. G. Zahid, N. S. Rohizat, S. K. Patel, and I. S. Amiri, "Nonlinear studies of graphene oxide and its application to moisture detection in transformer oil using D-shaped optical fibre," (in English), J. Mod. Opt., Article vol. 67, no. 7, pp. 619-627, Apr 2020.
68. R. Zakaria et al., "Sensitivity Comparison of Refractive Index Transducer Optical Fiber Based on Surface Plasmon Resonance Using Ag, Cu, and Bimetallic Ag-Cu Layer," (in English), Micromachines, Article vol. 11, no. 1, p. 13, Jan 2020.
69. A. K. Zamzuri et al., "Narrow bandwidth optimization using a polymer microring resonator in a thulium-holmium fiber laser cavity," (in English), Opt. Commun., Article vol. 466, p. 4, Jul 2020.
70. M. Z. Zulkifli, M. Yasin, N. A. Awang, K. Y. Lau, F. D. Muhammad, and A. K. Zamzuri, "Octave spanning supercontinuum generation with a few-mode fiber," (in English), Laser Phys., Article vol. 30, no. 7, p. 6, Jul 2020.
71. N. A. Zulkifli et al., "A highly sensitive, large area, and self-powered UV photodetector based on coalesced gallium nitride nanorods/graphene/silicon (111) heterostructure," (in English), Appl. Phys. Lett., Article vol. 117, no. 19, p. 7, Nov 2020.
72. N. A. A. Zulkifli et al., "Photocatalytic Application of Two-dimensional Materials-based Heterostructure Based on Molybdenum and Tungsten Disulfides and Gallium Nitride: A Density-Functional Theory Study," (in English), Mater. Today Commun., Article vol. 25, p. 8, Dec 2020.

1. A. Ahmad et al., "Self-generating Brillouin fiber laser using highly nonlinear hafnium bismuth erbium-doped fiber," (in English), Microw. Opt. Technol. Lett., Article vol. 61, no. 6, pp. 1651-1655, Jun 2019.
2. A. Ahmad et al., "Investigation of the Brillouin effect in highly nonlinear hafnium bismuth erbium doped fiber," (in English), Microw. Opt. Technol. Lett., Article vol. 61, no. 1, pp. 173-177, Jan 2019.
3. H. Ahmad and M. H. M. Ahmed, "Multiwavelength operation in praseodymium fiber laser using polarization maintaining fiber and nonlinear polarization rotation in ring cavity," (in English), Opt. Eng., Article vol. 58, no. 4, p. 4, Apr 2019.
4. H. Ahmad, M. H. M. Ahmed, and M. Z. Samion, "Generation of mode-locked noise-like pulses in double-clad Tm-doped fibre laser with nonlinear optical loop mirror," (in English), J. Mod. Opt., Article vol. 67, no. 2, pp. 146-152, Jan 2020.
5. H. Ahmad et al., "Generation of sub-nanosecond pulse in dual-wavelength praseodymium fluoride fibre laser," (in English), Laser Phys., Article vol. 29, no. 10, p. 6, Oct 2019.
6. H. Ahmad, S. N. Aidit, S. I. Ooi, and Z. C. Tiu, "Mode-locked thulium-fluoride fibre laser with an adjustable pulse width using a nonlinear optical loop mirror," (in English), Quantum Electron., Article vol. 49, no. 2, pp. 111-114, Feb 2019.
7. H. Ahmad, S. N. Aidit, and K. Thambiratnam, "85 nm wide-band tunable erbium doped fiber laser using a gallium selenide (GaSe)-based saturable absorber for passive optical modulation," (in English), Laser Phys. Lett., Article vol. 16, no. 9, p. 6, Sep 2019.
8. H. Ahmad, S. N. Aidit, and Z. C. Tiu, "Dissipative soliton resonance in a passively mode-locked praseodymium fiber laser," (in English), Opt. Laser Technol., Article vol. 112, pp. 20-25, Apr 2019.
9. H. Ahmad, S. N. Aidit, Z. C. Tiu, and S. I. Ooi, "Application of MoWS2-rGO/PVA thin film as all-fiber pulse and amplitude modulators in the O-band region," (in English), Opt. Fiber Technol., Article vol. 48, pp. 1-6, Mar 2019.
10. H. Ahmad and A. W. Al-Alimi, "Wide-band multiwavelength Brillouin-Raman fiber laser based on feedback optimization," (in English), Opt. Commun., Article vol. 453, p. 7, Dec 2019.
11. H. Ahmad, N. F. Azmy, A. N. Azmi, M. Z. Zulkifli, and M. F. Ismail, "Configurable triple wavelength semiconductor optical amplifier fiber laser using multiple broadband mirrors," (in English), Microw. Opt. Technol. Lett., Article vol. 62, no. 1, pp. 46-52, Jan 2020.
12. H. Ahmad, M. F. Ismail, and S. N. Aidit, "Optically Modulated Tunable O-Band Praseodymium-Doped Fluoride Fiber Laser Utilizing Multi-Walled Carbon Nanotube Saturable Absorber," (in English), Chin. Phys. Lett., Article vol. 36, no. 10, p. 4, Oct 2019.
13. H. Ahmad, A. A. Kamely, and M. Z. Samion, "A compact linear-cavity multi-wavelength Brillouin/thulium fiber laser in S/S+-band," (in English), Opt. Fiber Technol., Article vol. 51, pp. 25-30, Sep 2019.
14. H. Ahmad, M. R. Karim, and B. M. A. Rahman, "Dispersion-engineered silicon nitride waveguides for mid-infrared supercontinuum generation covering the wavelength range 0.8-6.5 mu m," (in English), Laser Phys., Article vol. 29, no. 2, p. 9, Feb 2019.
15. H. Ahmad, H. S. Lim, M. Z. MatJafri, Y. Q. Ge, H. Zhang, and Z. C. Tiu, "All-fiber optical polarization modulation system using MoS2 as modulator," (in English), Infrared Phys. Technol., Article vol. 102, p. 6, Nov 2019.
16. H. Ahmad et al., "Near-Infrared Soliton Mode-Locked Thulium Doped Fibre Laser Using WS < sub > 2 -ZnO Composite Material as Saturable Absorber," (in English), IEEE Photonics J., Article vol. 11, no. 5, p. 11, Oct 2019.
17. H. Ahmad, H. Monajemi, K. Thambiratnam, and M. F. Ismail, "Mode-locked near-infrared thulium doped fibre laser using evanescent field effect with Bi2O3 saturable absorber," (in English), Laser Phys., Article vol. 29, no. 5, p. 7, May 2019.
18. H. Ahmad, S. I. Ooi, and Z. C. Tiu, "100GHz free spectral range-tunable multi-wavelength fiber laser using single-multi-single mode fiber interferometer," (in English), Appl. Phys. B-Lasers Opt., Article vol. 125, no. 6, p. 11, Jun 2019.
19. H. Ahmad et al., "Tungsten disulfide-chitosan film as optical pulse and amplitude modulator in C-band region," (in English), Laser Phys., Article vol. 29, no. 10, p. 9, Oct 2019.
20. H. Ahmad, R. Ramli, H. Monajemi, S. A. Reduan, N. Yusoff, and M. F. Ismail, "Soliton mode-locking in thulium-doped fibre laser by evanescent field interaction with reduced graphene oxide-titanium dioxide saturable absorber," (in English), Laser Phys. Lett., Article vol. 16, no. 7, p. 9, Jul 2019.
21. H. Ahmad and H. Rashid, "405nm ultraviolet photodetector based on tungsten disulphide thin film grown by drop casting method," (in English), J. Mod. Opt., Article vol. 66, no. 18, pp. 1836-1840, Oct 2019.
22. H. Ahmad, H. Rashid, and M. F. Ismail, "Investigation of structural and optoelectronic properties of n-MoS2/p-Si sandwiched heterojunction photodetector," (in English), Optik, Article vol. 198, p. 8, Dec 2019.
23. H. Ahmad, H. Rashid, M. F. Ismail, and K. Thambiratnam, "Tungsten-disulphide-based heterojunction photodetector," (in English), Appl. Optics, Article vol. 58, no. 15, pp. 4014-4019, May 2019.
24. H. Ahmad, H. Rashid, M. F. Ismail, and K. Thambiratnam, "Fabrication and characterization of tungsten disulphide/silicon heterojunction photodetector for near infrared illumination," (in English), Optik, Article vol. 185, pp. 819-826, 2019.
25. H. Ahmad et al., "Ternary MoWSe2 alloy saturable absorber for passively Q-switched Yb-, Er- and Tm-doped fiber laser," (in English), Opt. Commun., Article vol. 437, pp. 355-362, Apr 2019.
26. H. Ahmad, S. A. Reduan, N. Yusoff, M. F. Ismail, and S. N. Aidit, "Mode-locked pulse generation in erbium-doped fiber laser by evanescent field interaction with reduced graphene oxide-titanium dioxide nanohybrid," (in English), Opt. Laser Technol., Article vol. 118, pp. 93-101, Oct 2019.
27. H. Ahmad, M. Z. Samion, A. A. Kamely, and M. F. Ismail, "Mode-locked thulium doped fiber laser with zinc oxide saturable absorber for 2 mu m operation," (in English), Infrared Phys. Technol., Article vol. 97, pp. 142-148, Mar 2019.
28. H. Ahmad, M. Z. Samion, K. Thambiratnam, and M. Yasin, "Widely Tunable Dual-Wavelength Thulium-doped fiber laser Operating in 1.8-2.0 mm Region," (in English), Optik, Article vol. 179, pp. 76-81, 2019.
29. H. Ahmad, A. S. Sharbirin, and M. F. Ismail, "1.8 mu m passively Q-switched thulium-doped fiber laser," (in English), Opt. Laser Technol., Article vol. 120, p. 5, Dec 2019.
30. H. Ahmad, A. S. Sharbirin, and M. F. Ismail, "Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser," (in English), J. Mod. Opt., Article vol. 66, no. 11, pp. 1163-1171, 2019.
31. H. Ahmad, S. Soltani, and K. Thambiratnam, "Q-switched erbium-doped fiber laser with molybdenum disulfide (MoS2) nanoparticles on D-shaped fiber as saturable absorber," (in English), J. Nonlinear Opt. Phys. Mater., Article vol. 28, no. 3, p. 11, Sep 2019.
32. H. Ahmad, S. Soltani, K. Thambiratnam, M. Yasin, and Z. C. Tiu, "Mode-locking in Er-doped fiber laser with reduced graphene oxide on a side-polished fiber as saturable absorber," (in English), Opt. Fiber Technol., Article vol. 50, pp. 177-182, Jul 2019.
33. H. Ahmad and T. M. K. Thandavan, "Ultraviolet photoconduction in tungsten disulphide based Schottky heterostructure photodetector," (in English), Opt. Mater., Article vol. 92, pp. 255-261, Jun 2019.
34. H. Ahmad and T. M. K. Thandavan, "Influence of boron nitride nanoparticles in the electrical and photoconduction characteristics of planar boron nitride-graphene oxide composite layer," (in English), Mater. Express, Article vol. 9, no. 3, pp. 265-272, Jun 2019.
35. H. Ahmad, T. M. K. Thandavan, and M. F. Ismail, "Surface plasmonic effect of nanoparticle-like silver nanostructure on the high responsivity of visible/infrared silver-based heterojunction photodetector," (in English), J. Mod. Opt., Article vol. 66, no. 12, pp. 1329-1338, Jul 2019.
36. H. Ahmad, T. M. K. Thandavan, and K. Thambiratnam, "Dual characteristics of molybdenum disulfide based PN heterojunction photodetector prepared via drop-cast technique," (in English), Optik, Article vol. 188, pp. 8-11, 2019.
37. H. Ahmad, N. Yusoff, H. Monajemi, and S. A. Reduan, "Nickel phosphate as a C-band optical pulse modulator," (in English), Appl. Phys. B-Lasers Opt., Article vol. 125, no. 7, p. 9, Jul 2019.
38. H. Ahmad et al., "Compact L-band switchable dual wavelength SOA based on linear cavity fiber laser," (in English), Optik, Article vol. 182, pp. 37-41, Apr 2019.
39. H. Ahmad, A. Z. Zulkifli, Z. C. Tiu, K. Thambiratnam, and M. Yasin, "Depressed cladding erbium-doped fiber laser passively mode-locked with carbon nanotube saturable absorber," (in English), Laser Phys. Lett., Article vol. 16, no. 4, p. 5, Apr 2019.
40. M. T. Ahmad et al., "Q-switched Ytterbium doped fibre laser using gold nanoparticles saturable absorber fabricated by electron beam deposition," (in English), Optik, Article vol. 182, pp. 241-248, Apr 2019.
41. M. T. Ahmad et al., "Q-switched erbium-doped fiber laser using silver nanoparticles deposited onto side-polished D-shaped fiber by electron beam deposition method," (in English), Opt. Fiber Technol., Article vol. 53, p. 8, Dec 2019.
42. A. A. Al-Azzawi et al., "Wideband and flat gain series erbium doped fiber amplifier using hybrid active fiber with backward pumping distribution technique," (in English), Results Phys., Article vol. 13, p. 6, Jun 2019.
43. A. A. Al-Azzawi et al., "An efficient wideband hafnia-bismuth erbium co-doped fiber amplifier with flat-gain over 80 nm wavelength span," (in English), Opt. Fiber Technol., Article vol. 48, pp. 186-193, Mar 2019.
44. A. A. Al-Azzawi et al., "Wide-band flat-gain optical amplifier using Hafnia and zirconia erbium co-doped fibres in double-pass parallel configuration," (in English), J. Mod. Opt., Article vol. 66, no. 16, pp. 1711-1716, Sep 2019.
45. I. A. M. Alani et al., "Nanosecond mode-locked erbium doped fiber laser based on zinc oxide thin film saturable absorber," (in English), Indian J. Phys., Article vol. 93, no. 1, pp. 93-99, Jan 2019.
46. A. A. Almukhtar et al., "Flat-gain and wide-band partial double-pass erbium co-doped fiber amplifier with hybrid gain medium," (in English), Opt. Fiber Technol., Article vol. 52, p. 5, Nov 2019.
47. A. A. Almukhtar et al., "Flat-gain optical amplification within 70 nm wavelength band using 199 cm long hybrid erbium fibers," (in English), Optoelectron. Adv. Mater.-Rapid Commun., Article vol. 13, no. 7-8, pp. 391-395, Jul-Aug 2019.
48. A. A. Almukhtar et al., "An efficient L-band Zirconia Yttria Aluminum Erbium co-doped fiber amplifier with 1480 nm pumping," (in English), J. Nonlinear Opt. Phys. Mater., Article vol. 28, no. 2, p. 10, Jun 2019.
49. A. A. Almukhtar et al., "Wideband optical fiber amplifier with short length of enhanced erbium-zirconia-yttria-aluminum co-doped fiber," (in English), Optik, Article vol. 182, pp. 194-200, Apr 2019.
50. I. S. Amiri, M. M. Ariannejad, J. Ali, and P. Yupapin, "Design of optical splitter using ion-exchange method for DNA bio-sensor," (in English), J. King Saud Univ. Sci., Article vol. 31, no. 4, pp. 549-555, Oct 2019.
51. I. S. Amiri, M. M. Ariannejad, M. Ghasemi, A. Dehzangi, H. Ahmad, and P. Yupapin, "On comparison of the temperature sensitivity of SU-8-based triple-arm MZI against straight rib optical waveguides patterned on silicon wafer," (in English), Indian J. Phys., Article vol. 93, no. 3, pp. 385-391, Mar 2019.
52. I. S. Amiri, M. M. Ariannejad, V. Kouhdaraghd, S. A. Seyedi, and P. Yupapin, "Microring resonator made by ion-exchange technique for detecting the CO2, H2O, and NaCl as cladding layer," (in English), J. King Saud Univ. Sci., Article vol. 31, no. 1, pp. 27-32, Jan 2019.
53. I. S. Amiri, M. M. Ariannejad, V. J. Sorger, and P. Yupapin, "Silicon microring resonator waveguide-based graphene photodetector," (in English), Microsyst. Technol., Article vol. 25, no. 1, pp. 319-328, Jan 2019.
54. I. S. Amiri et al., "Tri-core photonic crystal fiber based refractive index dual sensor for salinity and temperature detection," (in English), Microw. Opt. Technol. Lett., Article vol. 61, no. 3, pp. 847-852, Mar 2019.
55. I. S. Amiri, R. Zakaria, and P. Yupapin, "Manipulating of nanometer spacing dual-wavelength by controlling the apodized grating depth in microring resonators," (in English), Results Phys., Article vol. 12, pp. 32-37, Mar 2019.
56. D. Ariannejad, E. Akbari, P. Y. Thong, M. Ghasemi, and A. Dehzangi, "Half panda waveguide structure in the generation of four-wave mixing," (in English), Optik, Article vol. 183, pp. 999-1007, 2019.
57. M. M. Ariannejad, E. Akbari, P. Y. Thong, M. Ghasemi, A. Dehzangi, and H. Ahmad, "Silicon racetrack resonator based on nonlinear material," (in English), Eur. Phys. J. D, Article vol. 73, no. 8, p. 5, Aug 2019.
58. V. Arthi, I. S. Amiri, M. M. Ariannejad, P. Yupapin, S. P. Chakkravarthy, and M. S. M. Rajan, "Panda resonator structure to generate four-wave mixing by nonlinear effect," (in English), Optik, Article vol. 180, pp. 900-905, Jan 2019.
59. N. Berahim et al., "Polarizing effect of MoSe2-coated optical waveguides," (in English), Results Phys., Article vol. 12, pp. 7-11, Mar 2019.
60. S. Bianconi, M. Rezaei, M. S. Park, W. Y. Huang, C. L. Tan, and H. Mohseni, "Engineering the gain-bandwidth product of phototransistor diodes," (in English), Appl. Phys. Lett., Article vol. 115, no. 5, p. 5, Jul 2019.
61. M. K. A. Bin Zaini, Y. S. Lee, K. S. Lim, M. M. Ali, N. A. M. Nazal, and H. Ahmad, "Digital Matched Filtering (DMF) Technique for the Performance Enhancement of Few-Mode Fiber Bragg Grating Sensor," (in English), IEEE Sens. J., Article vol. 19, no. 14, pp. 5653-5659, Jul 2019.
62. D. Dutta et al., "Nanosecond pulse laser generation at 1.55 and 2 mu m regions by integrating a piece of newly developed chromium-doped fiber-based saturable absorber," (in English), Appl. Optics, Article vol. 58, no. 24, pp. 6528-6534, Aug 2019.
63. D. Dutta et al., "Newly developed chromium-doped fiber as a saturable absorber at 1.55-and 2.0-mu m regions for Q-switching pulses generation," (in English), Opt. Fiber Technol., Article vol. 48, pp. 144-150, Mar 2019.
64. Y. Y. Foo, W. S. Saw, V. Periasamy, W. Y. Chong, S. N. Abd Malek, and S. Tayyab, "Green synthesised-gold nanoparticles in photothermal therapy of breast cancer," (in English), Micro Nano Lett., Article vol. 14, no. 5, pp. 470-474, May 2019.
65. Z. M. Hafizi, E. Vorathin, A. M. Aizzuddin, and K. S. Lim, "High-Resolution Fibre Bragg Grating (FBG) Pressure Transducer for Low-Pressure Detection," (in English), Int. J. Automot. Mech. Eng, Article vol. 16, no. 2, pp. 6783-6795, Apr-Jun 2019.
66. Y. D. He et al., "Discriminative measurement for temperature and humidity using hollow-core Fabry-Perot interferometer," (in English), Opt. Fiber Technol., Article vol. 53, p. 6, Dec 2019.
67. S. A. S. Husin, F. D. Muhammad, C. A. C. Abdullah, S. H. Ribut, M. Z. Zulkifli, and M. A. Mandi, "Zinc-oxide nanoparticle-based saturable absorber deposited by simple evaporation technique for Q-switched fiber laser," (in English), Chin. Phys. B, Article vol. 28, no. 8, p. 5, Aug 2019.
68. N. S. A. Jaafar et al., "The surgical ablation on soft tissues using Ho:YAG laser with deviated beam fiber," (in English), Opt. Fiber Technol., Article vol. 52, p. 5, Nov 2019.
69. Z. Kakaie, A. S. Sharbirin, G. A. Mahdiraji, F. R. M. Adikan, M. F. Ismail, and H. Ahmade, "Improvement of 2-m Thulium-Doped Fiber Lasers via ASE Suppression Using All-Solid Low-Pass Photonic Bandgap Fibers," (in English), J. Lightwave Technol., Article vol. 37, no. 22, pp. 5686-5691, Nov 2019.
70. R. Kanmani et al., "Effects of TiO2 on the performance of silver coated on side-polished optical fiber for alcohol sensing applications," (in English), Opt. Fiber Technol., Article vol. 50, pp. 183-187, Jul 2019.
71. S. Karthikeyan, M. H. Mezher, F. Ibrahim, D. Vigneswaran, I. S. Amiri, and R. Zakaria, "Graphene oxide-based optical waveguide for moisture sensing in transformer oil," (in English), Photonics Nanostruct., Article vol. 36, p. 7, Sep 2019.
72. W. A. Khaleel, S. A. Sadeq, I. A. M. Alani, and M. H. M. Ahmed, "Magnesium oxide (MgO) thin film as saturable absorber for passively mode locked erbium-doped fiber laser," (in English), Opt. Laser Technol., Article vol. 115, pp. 331-336, Jul 2019.
73. M. A. Khalek, S. Chakma, K. Ahmed, B. K. Paul, D. Vigneswaran, and R. Zakaria, "Materials Effect in Sensing Performance Based on Surface Plasmon Resonance Using Photonic Crystal Fiber," (in English), Plasmonics, Article vol. 14, no. 4, pp. 861-867, Aug 2019.
74. F. W. Lee, H. K. Chai, K. S. Lim, and S. H. Lau, "Concrete Subsurface Crack Characterization by Means of Surface Rayleigh Wave Method," (in English), ACI Mater. J., Article vol. 116, no. 1, pp. 113-123, Jan-Feb 2019.
75. S. Li et al., "Multiwavelength Q-switched pulse operation with gold nanoparticles as saturable absorber," (in English), Opt. Eng., Article vol. 58, no. 6, p. 7, Jun 2019.
76. S. Li et al., "All fibre Q-switched Thulium-doped fibre laser incorporating Thulium-Holmium co-doped fibre as a saturable absorber," (in English), Opt. Commun., Article vol. 450, pp. 160-165, Nov 2019.
77. S. Li et al., "Dissipative soliton generation in Er-doped fibre laser using SnS2 as a saturable absorber," (in English), Appl. Phys. Express, Article vol. 12, no. 10, p. 5, Oct 2019.
78. S. Li et al., "Nanosecond passively Q-switched fibre laser using a NiS2 based saturable absorber," (in English), Opt. Express, Article vol. 27, no. 14, pp. 19843-19851, Jul 2019.
79. K. S. Lim, Z. C. Ong, Y. S. Lee, M. K. A. Bin Zaini, and H. Ahmad, "Pseudohigh-Resolution Spectral Interrogation Scheme for Small Signals From FBG Sensors," (in English), IEEE Trans. Instrum. Meas., Article vol. 68, no. 8, pp. 2964-2970, Aug 2019.
80. D. Luo, Y. Y. Li, J. N. Li, K. S. Lim, N. A. M. Nazal, and H. Ahmad, "A Recent Progress of Steel Bar Corrosion Diagnostic Techniques in RC Structures," (in English), Sensors, Review vol. 19, no. 1, p. 30, Jan 2019.
81. N. A. Mohd Nazal, K. S. Lim, Y. S. Lee, M. A. Mat Salim, and H. Ahmad, "Influence of Internal Stresses in Few-Mode Fiber on the Thermal Characteristics of Regenerated Gratings," (in English), Photonic Sens., Article vol. 9, no. 2, pp. 162-169, Jun 2019.
82. A. R. Muhammad, M. T. Ahmad, R. Zakaria, P. P. Yupapin, S. W. Harun, and M. Yasin, "Mode-locked thulium doped fibre laser with copper thin film saturable absorber," (in English), J. Mod. Opt., Article vol. 66, no. 13, pp. 1381-1385, Jul 2019.
83. A. R. Muhammad, R. Zakaria, M. T. Ahmad, H. R. A. Rahim, H. Arof, and S. W. Harun, "Q-Switched Thulium-Doped Fiber Laser with Pure Titanium-Film-Based Saturable Absorber," (in English), Fiber Integrated Opt., Article vol. 38, no. 2, pp. 137-147, Mar 2019.
84. A. R. Muhammad, R. Zakaria, M. T. Ahmad, P. Wang, and S. W. Harun, "Pure gold saturable absorber for generating Q-switching pulses at 2 mu m in Thulium-doped fiber laser cavity," (in English), Opt. Fiber Technol., Article vol. 50, pp. 23-30, Jul 2019.
85. A. R. Muhammad et al., "Q-switched fiber laser operating at 1 mu m region with electron beam deposited titanium nanoparticles," (in English), Opt. Laser Technol., Article vol. 120, p. 8, Dec 2019.
86. S. Noor, N. F. Zulkipli, H. Ahmad, and S. W. Harun, "Passively Q-switched fiber laser tunable by Sagnac interferometer operation," (in English), Optik, Article vol. 179, pp. 1-7, 2019.
87. B. K. Paul, K. Ahmed, S. Rahman, M. Shanthi, D. Vigneswaran, and R. Zakaria, "Numerical analysis of a highly nonlinear microstructured optical fiber with air-holes arranged in spirals," (in English), Opt. Fiber Technol., Article vol. 51, pp. 90-95, Sep 2019.
88. H. H. Qazi et al., "Surface roughness and the sensitivity of D-shaped optical fibre sensors," (in English), J. Mod. Opt., Article vol. 66, no. 11, pp. 1244-1251, 2019.
89. H. Rashid et al., "Physical and electrical properties of molybdenum thin films grown by DC magnetron sputtering for photovoltaic application," (in English), Results Phys., Article vol. 14, p. 7, Sep 2019.
90. M. Rezaei et al., "InGaAs based heterojunction phototransistors: Viable solution for high-speed and low-noise short wave infrared imaging," (in English), Appl. Phys. Lett., Article vol. 114, no. 16, p. 5, Apr 2019.
91. M. F. M. Rusdi et al., "Q-switched and mode-locked thulium doped fiber lasers with nickel oxide film saturable absorber," (in English), Opt. Commun., Article vol. 447, pp. 6-12, Sep 2019.
92. N. A. Siddiq, W. Y. Chong, Y. H. Pramono, M. S. Muntini, and H. Ahmad, "C-band tunable performance of passively Q-switched erbium-doped fiber laser using Tin(IV) oxide as a saturable absorber," (in English), Opt. Commun., Article vol. 442, pp. 1-7, Jul 2019.
93. S. Soltani, U. Rashid, T. R. Shojaei, I. A. Nehdi, and M. Ibrahim, "Modeling of the nanocrystalline-sized mesoporous zinc oxide catalyst using an artificial neural network for efficient biodiesel production," (in English), Chem. Eng. Commun., Article vol. 206, no. 1, pp. 33-47, 2019.
94. M. Tajdidzadeh, A. Zakaria, Z. A. Talib, A. Nisar, N. M. B. Kanoun, and S. Goumri-Said, "Improving stability of zinc nanoparticles in chitosan solution with a nanosecond pulsed laser," (in English), Laser Phys. Lett., Article vol. 16, no. 5, p. 10, May 2019.
95. C. L. Tan, H. M. Wei, T. M. K. Thandavam, R. Ramli, M. Park, and H. Ahmad, "Broadband high responsivity large-area plasmonic-enhanced multilayer MoS2 on p-type silicon photodetector using Au nanostructures," (in English), Mater. Res. Express, Article vol. 6, no. 10, p. 8, Oct 2019.
96. D. Tan et al., "Experimental assessment on feasibility of computed tomography-based thermometry for radiofrequency ablation on tissue equivalent polyacrylamide phantom," (in English), Int. J. Hyperthermia, Article vol. 36, no. 1, pp. 554-561, Jan 2019.
97. T. M. K. Thandavan, Pujiyanto, and H. Ahmad, "High performance graphene-like thinly layered graphite based visible light photodetector," (in English), Opt. Quantum Electron., Article vol. 51, no. 12, p. 11, Dec 2019.
98. Q. Tian et al., "Highly sensitive micro-hygrometer based on microfiber knot resonator," (in English), Opt. Commun., Article vol. 431, pp. 88-92, Jan 2019.
99. Z. C. Tiu, S. I. Ooi, J. Guo, H. Zhang, and H. Ahmad, "Review: application of transition metal dichalcogenide in pulsed fiber laser system," (in English), Mater. Res. Express, Review vol. 6, no. 8, p. 17, Aug 2019.
100. R. X. Tong et al., "1.3 mu m fiber grating in a thin-core fiber for LP01-LP11 mode converters and sensing ability," (in English), Appl. Optics, Article vol. 58, no. 16, pp. 4358-4364, Jun 2019.
101. N. S. Vadivu et al., "Graphene oxide coated side polished surface plasmon resonance optical fibre sensor with varying polishing losses," (in English), Opt. Quantum Electron., Article vol. 51, no. 11, p. 12, Nov 2019.
102. E. Vorathin, Z. M. Hafizi, A. M. Aizzuddin, and K. S. Lim, "Temperature-insensitive pressure transducer based on reflected broadened spectrum with enhanced sensitivity," (in English), Sens. Actuator A-Phys., Article vol. 288, pp. 61-66, Apr 2019.
103. E. Vorathin, Z. M. Hafizi, A. M. Aizzuddin, M. K. A. Zaini, and K. S. Lim, "Temperature-independent chirped FBG pressure transducer with high sensitivity," (in English), Opt. Lasers Eng., Article vol. 117, pp. 49-56, Jun 2019.
104. E. Vorathin, Z. M. Hafizi, A. M. Aizzuddin, M. K. A. Zaini, and K. S. Lim, "A Novel Temperature-Insensitive Hydrostatic Liquid-Level Sensor Using Chirped FBG," (in English), IEEE Sens. J., Article vol. 19, no. 1, pp. 157-162, Jan 2019.
105. E. Vorathin et al., "FBG Water-Level Transducer Based on PVC-Cantilever and Rubber-Diaphragm Structure," (in English), IEEE Sens. J., Article vol. 19, no. 17, pp. 7407-7414, Sep 2019.
106. H. M. Wei, C. L. Tan, A. K. Amrithanath, and S. Krishnaswamy, "Functionalized fiber-optic long-period grating with reduced cladding size for humidity sensing," (in English), Opt. Eng., Article vol. 58, no. 3, p. 7, Mar 2019.
107. H. Z. Yang et al., "Regenerated grating produced in a multimaterial glass-based photosensitive fiber with an ultrahigh thermal regeneration ratio," (in English), Opt. Express, Article vol. 27, no. 4, pp. 4329-4337, Feb 2019.
108. M. K. A. Zaini et al., "In-fiber Fabry Perot interferometer with narrow interference fringes for enhanced sensitivity in elastic wave detection," (in English), Opt. Fiber Technol., Article vol. 53, p. 6, Dec 2019.
109. N. A. M. Zainuddin, M. M. Ariannejad, P. T. Arasu, S. W. Harun, and R. Zakaria, "Investigation of cladding thicknesses on silver SPR based side-polished optical fiber refractive-index sensor," (in English), Results Phys., Article vol. 13, p. 8, Jun 2019.
110. R. Zakaria et al., "Investigation of Surface Plasmon Resonance (SPR) in MoS2- and WS2-Protected Titanium Side-Polished Optical Fiber as a Humidity Sensor," (in English), Micromachines, Article vol. 10, no. 7, p. 10, Jul 2019.
111. M. Z. Zulkifli, K. Y. Lau, F. D. Muhammad, and M. Yasin, "Dual-mode output in half open cavity random fibre laser," (in English), Opt. Commun., Article vol. 430, pp. 273-277, Jan 2019.

[1]    H. Ahmad et al., "Mixed Transition Metal Dichalcogenide as Saturable Absorber in Ytterbium, Praseodymium, and Erbium Fiber Laser," (in English), IEEE J. Quantum Electron., Article vol. 54, no. 3, p. 9, Jun 2018.

[2]    H. Ahmad, S. N. Aidit, S. I. Ooi, and Z. C. Tiu, "All-fiber, wavelength-tunable ultrafast praseodymium fiber laser," (in English), Chin. Opt. Lett., Article vol. 16, no. 12, p. 5, Dec 2018.

[3]    H. Ahmad, S. N. Aidit, S. I. Ooi, and Z. C. Tiu, "Supercontinuum Micrometer-Displacement Sensor Using Single-Multi-Air-Gap-Single Mode Fiber as Sensing Probe," (in English), IEEE Sens. J., Article vol. 18, no. 20, pp. 8275-8279, Oct 2018.

[4]    H. Ahmad, S. N. Aidit, S. I. Ooi, and Z. C. Tiu, "Tunable passively Q-switched erbium -doped fiber laser with Chitosan/MoS2 saturable absorber," (in English), Opt. Laser Technol., Article vol. 103, pp. 199-205, Jul 2018.

[5]    H. Ahmad, S. N. Aidit, S. I. Ooi, and Z. C. Tiu, "Tunable passively Q-switched ytterbium-doped fiber laser with mechanically exfoliated GaSe saturable absorber," (in English), Chin. Opt. Lett., Article vol. 16, no. 2, p. 5, Feb 2018.

[6]    H. Ahmad, S. N. Aidit, S. I. Ooi, and Z. C. Tiu, "Wide-band, passively Q-switched Yb- and Tm-doped fibre laser using WSSe saturable absorber," (in English), J. Mod. Opt., Article vol. 65, no. 17, pp. 2044-2050, 2018.

[7]    H. Ahmad, S. N. Aidit, and Z. C. Tiu, "Multi-wavelength Praseodymium fiber laser using stimulated Brillouin scattering," (in English), Opt. Laser Technol., Article vol. 99, pp. 52-59, Feb 2018.

[8]    H. Ahmad, S. N. Aidit, and N. Yusoff, "Bismuth oxide nanoflakes for passive Q-switching in a C-band erbium doped fiber laser," (in English), Infrared Phys. Technol., Article vol. 95, pp. 19-26, Dec 2018.

[9]    H. Ahmad, M. J. Faruki, A. A. Jasim, S. I. Ooi, and K. Thambiratnam, "Poly (N-vinyl Carbazole) - Polypyrrole/graphene oxide nanocomposite material on tapered fiber for Q-switched pulse generation," (in English), Opt. Laser Technol., Article vol. 99, pp. 184-190, Feb 2018.

[10]    H. Ahmad, M. R. Karim, S. Ghosh, and B. M. A. Rahman, "Generation of an ultrabroadband supercontinuum in the mid-infrared region using dispersion-engineered GeAsSe photonic crystal fiber," (in English), Opt. Quantum Electron., Article vol. 50, no. 11, p. 14, Nov 2018.

[11]    H. Ahmad, M. R. Karim, and B. M. A. Rahman, "Modeling of dispersion engineered chalcogenide rib waveguide for ultraflat mid-infrared supercontinuum generation in all-normal dispersion regime," (in English), Appl. Phys. B-Lasers Opt., Article vol. 124, no. 3, p. 10, Mar 2018.

[12]    H. Ahmad et al., "Enhancing Temperature Sensitivity Using Cyclic Polybutylene Terephthalate- (c-PBT-) Coated Fiber Bragg Grating," (in English), J. Sens., Article vol. 2018, p. 6, 2018.

[13]    H. Ahmad, S. I. Ooi, Z. C. Tiu, and B. M. A. Rahman, "Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity," (in English), Opt. Commun., Article vol. 426, pp. 1-8, Nov 2018.

[14]    H. Ahmad and S. A. Reduan, "Spooling diameter dependent Q-switched output in depressed cladding erbium doped laser with MoWS2 saturable absorber," (in English), Opt. Laser Technol., Article vol. 108, pp. 170-176, Dec 2018.

[15]    H. Ahmad and S. A. Reduan, "S plus /S band passively Q-switched thulium-fluoride fiber laser based on using gallium selenide saturable absorber," (in English), Opt. Laser Technol., Article vol. 107, pp. 116-121, Nov 2018.

[16]    H. Ahmad and S. A. Reduan, "Tunable Q-switched thulium-doped fiber laser (TDFL) in 2.0 mu m region based on gallium selenide saturable absorber," (in English), Opt. Laser Technol., Article vol. 105, pp. 10-14, Sep 2018.

[17]    H. Ahmad and S. A. Reduan, "Passively Q-switched S-band thulium fluoride fiberlaser with multi-walled carbon nanotube," (in English), Chin. Opt. Lett., Article vol. 16, no. 1, p. 5, Jan 2018.

[18]    H. Ahmad, S. A. Reduan, M. F. Ismail, and K. Thambiratnam, "Single-walled carbon nanotube tunable mode-locked soliton fibre laser," (in English), Quantum Electron., Article vol. 48, no. 10, pp. 930-935, 2018.

[19]    H. Ahmad, S. A. Reduan, S. I. Ooi, and M. A. Ismail, "Mechanically exfoliated In2Se3 as a saturable absorber for mode-locking a thulium-doped fluoride fiber laser operating in S-band," (in English), Appl. Optics, Article vol. 57, no. 24, pp. 6937-6942, Aug 2018.

[20]    H. Ahmad, S. A. Reduan, A. S. Sharbirin, M. F. Ismail, and M. Z. Zulkifli, "Q-switched thulium/holmium fiber laser with gallium selenide," (in English), Optik, Article vol. 175, pp. 87-92, 2018.

[21]    H. Ahmad, S. A. Reduan, and N. Yusoff, "Nickel oxide nanoparticles grafted with Chitosan as saturable absorber for tunable passively Q-switched fiber laser in S plus /S band," (in English), Infrared Phys. Technol., Article vol. 93, pp. 96-102, Sep 2018.

[22]    H. Ahmad, S. A. Reduan, and N. Yusoff, "Chitosan capped nickel oxide nanoparticles as a saturable absorber in a tunable passively Q-switched erbium doped fiber laser," (in English), RSC Adv., Article vol. 8, no. 45, pp. 25592-25601, 2018.

[23]    H. Ahmad, M. Z. Samion, A. S. Sharbirin, M. F. Ismail, M. Z. Zulkifli, and K. Thambiratnam, "70 nm, broadly tunable passively Q-switched thulium-doped fiber laser with few-layer Mo0.8W0.2S2 saturable absorber," (in English), Opt. Fiber Technol., Article vol. 46, pp. 230-237, Dec 2018.

[24]    H. Ahmad, M. Z. Samion, A. S. Sharbirin, S. F. Norizan, S. N. Aidit, and M. F. Ismail, "Graphene-PVA saturable absorber for generation of a wavelength-tunable passively Q-switched thulium-doped fiber laser in 2.0 mu m," (in English), Laser Phys., Article vol. 28, no. 5, p. 9, May 2018.

[25]    H. Ahmad, M. Z. Samion, and N. Yusoff, "Soliton mode-locked thulium-doped fiber laser with cobalt oxide saturable absorber," (in English), Opt. Fiber Technol., Article vol. 45, pp. 122-127, Nov 2018.

[26]    H. Ahmad, S. Soltani, M. F. Ismail, K. Thambiratnam, C. W. Yi, and M. Yasin, "Characterization of light-control-light system using graphene oxide coated optical waveguide," (in English), Laser Phys., Article vol. 28, no. 7, p. 6, Jul 2018.

[27]    H. Ahmad, S. Soltani, K. Thambiratnam, M. Yasin, M. F. Ismail, and Z. C. Tiu, "Passive mode-locking in erbium-doped fibre laser based on BN-GO saturable absorber," (in English), J. Mod. Opt., Article vol. 65, no. 21, pp. 2339-2349, 2018.

[28]    H. Ahmad, M. Tajdidzadeh, and S. A. Reduan, "Passively Q-switched erbium-doped fiber laser using coated reduced graphene oxide on arc-shaped single mode optical fiber as a saturable absorber," (in English), Laser Phys., Article vol. 28, no. 8, p. 9, Aug 2018.

[29]    H. Ahmad, M. Tajdidzadeh, K. Thambiratnam, and M. Yasin, "Infrared photodetectors based on reduced graphene oxide nanoparticles and graphene oxide," (in English), Laser Phys., Article vol. 28, no. 6, p. 7, Jun 2018.

[30]    H. Ahmad, M. Tajdidzadeh, K. Thambiratnam, and M. Yasin, "Hydrothermally synthesized zinc oxide nanoparticle based photodetector for blue spectrum detection," (in English), Optik, Article vol. 172, pp. 35-42, 2018.

[31]    H. Ahmad, M. Tajdidzadeh, and T. M. K. Thandavan, "Heterojunction photodetector based on graphene oxide sandwiched between ITO and p-Si," (in English), J. Mod. Opt., Article vol. 65, no. 3, pp. 353-360, 2018.

[32]    H. Ahmad and T. Tamil, "High responsivity, self-powered carbon-zinc oxide hybrid thin film based photodetector," (in English), Appl. Nanosci., Article vol. 8, no. 7, pp. 1755-1765, Oct 2018.

[33]    H. Ahmad and T. M. K. Tamil, "Enhancement of broadband ultraviolet visible photodetection by boron nitride nanoparticles in bulk graphene oxide layer," (in English), Opt. Mater., Article vol. 86, pp. 18-23, Dec 2018.

[34]    H. Ahmad, K. Thambiratnan, M. J. Faruki, and S. R. Azzuhri, "Single longitudinal mode laser generation using coupled microfiber Mach-Zehnder interferometer filter," (in English), Laser Phys., Article vol. 28, no. 8, p. 5, Aug 2018.

[35]    H. Ahmad and T. M. K. Thandavan, "Effect of iron impurity in liquid phase exfoliated tungsten disulfide based ultraviolet heterojunction photodetector," (in English), Mater. Express, Article vol. 8, no. 5, pp. 457-462, Oct 2018.

[36]    H. Ahmad and T. M. K. Thandavan, "Planar hybrid carbon-decorated zinc oxide nanowires for infrared photodetection," (in English), J. Nanopart. Res., Article vol. 20, no. 4, p. 11, Mar 2018.

[37]    H. Ahmad, Z. C. Tiu, and S. I. Ooi, "Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber," (in English), Chin. Opt. Lett., Article vol. 16, no. 2, p. 5, Feb 2018.

[38]    H. Ahmad, A. S. Zulkhairi, and S. R. Azzuhri, "Temperature sensor and fiber laser based on optical microfiber knot resonator," (in English), Optik, Article vol. 154, pp. 294-302, 2018.

[39]    H. Ahmad, A. Z. Zulkifli, and Z. C. Tiu, "Acrylate polymer coated side-polished fiber with graphene oxide nanoparticles for ultrafast fiber laser operation," (in English), Laser Phys., Article vol. 28, no. 11, p. 8, Nov 2018.

[40]    H. Ahmad, A. Z. Zulkifli, M. Yasin, M. F. Ismail, and K. Thambiratnam, "In2Se3 saturable absorber for generating tunable Q-switched outputs from a bismuth-erbium doped fiber laser," (in English), Laser Phys. Lett., Article vol. 15, no. 11, p. 9, Nov 2018.

[41]    N. A. Ahmad, S. H. Dahlan, N. A. Cholan, H. Ahmad, I. S. Amiri, and Z. C. Tiu, "Dual-Wavelength Thulium Fluoride Fiber Laser Based on SMF-TMSIF-SMF Interferometer as Potential Source for Microwave Generation in 100-GHz Region," (in English), IEEE J. Quantum Electron., Article vol. 54, no. 2, p. 7, Apr 20182.

[42]    N. A. B. Ahmad, S. H. Dahlan, N. A. Cholan, H. Ahmad, and Z. C. Tiu, "Switchable 10, 20, and 30 GHz region photonics-based microwave generation using thulium-doped fluoride fiber laser," (in English), J. Opt. Soc. Am. B-Opt. Phys., Article vol. 35, no. 7, pp. 1603-1608, Jul 2018.

[43]    H. Ahmed, S. Soltani, K. Thambiratnam, and M. Yasin, "Highly stable mode-locked fiber laser with graphene oxide-coated side-polished D-shaped fiber saturable absorber," (in English), Opt. Eng., Article vol. 57, no. 5, p. 9, May 2018.

[44]    E. Akbari, G. Mosallanezhad, M. M. Ariannejad, P. Yupapin, and A. Afroozeh, "Quality factor investigation by using trapezoidal subwavelength grating waveguide micro-ring resonator based on graphene," (in English), Results Phys., Article vol. 10, pp. 304-307, Sep 2018.

[45]    A. A. Al-Azzawi et al., "Compact and flat-gain fiber optical amplifier with Hafnia-Bismuth-Erbium co-doped fiber," (in English), Optik, Article vol. 170, pp. 56-60, 2018.

[46]    I. S. Amiri, F. Alizadeh, M. M. Ariannejad, R. Amini, and P. Yupapin, "Computation of ion exchange buried microring resonator waveguide for THz communication applications," (in English), Results Phys., Article vol. 10, pp. 287-290, Sep 2018.

[47]    I. S. Amiri, T. Anwar, R. Zakaria, and P. Yupapin, "TE-like mode analysis of microsystem InGaAsP/InP semiconductor resonator generating 20 GHz repetition rate pulse trains," (in English), Results Phys., Article vol. 10, pp. 980-986, Sep 2018.

[48]    I. S. Amiri, M. M. Ariannejad, H. Y. Abdullah, and P. Yupapin, "Spectral detection of graphene and graphene oxide with SU-8 based asymmetry tripled-Arm Mach Zehnder," (in English), Optik, Article vol. 154, pp. 93-99, 2018.

[49]    I. S. Amiri, M. M. Ariannejad, S. R. B. Azzuhri, T. Anwar, V. Kouhdaragh, and P. Yupapin, "Vertical Ge photodetector base on InP taper waveguide," (in English), Results Phys., Article vol. 9, pp. 576-579, Jun 2018.

[50]    I. S. Amiri, M. M. Ariannejad, S. Daud, and P. Yupapin, "High sensitive temperature sensor silicon-based microring resonator using the broadband input spectrum," (in English), Results Phys., Article vol. 9, pp. 1578-1584, Jun 2018.

[51]    I. S. Amiri et al., "Visible Wireless Communications Using Solitonic Carriers Generated by Microring Resonators (MRRs)," (in English), Iran. J. Sci. Technol. Trans. A-Sci., Article vol. 42, no. A3, pp. 1595-1601, Sep 2018.

[52]    I. S. Amiri, M. M. Ariannejad, M. A. Jalil, J. Ali, and P. Yupapin, "Modeling optical transmissivity of graphene grate in on-chip silicon photonic device," (in English), Results Phys., Article vol. 9, pp. 1044-1049, Jun 2018.

[53]    I. S. Amiri, M. M. Ariannejad, V. J. Sorger, and P. Yupapin, "Germanium Photodetection Improvements Using InP Bragg Grating," (in English), J. Nanoelectron. Optoelectron., Article vol. 13, no. 9, pp. 1383-1388, Sep 2018.

[54]    I. S. Amiri, M. M. Ariannejad, M. Tajdidzadeh, V. J. Sorger, X. Ling, and P. Yupapin, "Fast and slow light generated by surface plasmon wave and gold grating coupling effects," (in English), Indian J. Phys., Article vol. 92, no. 6, pp. 789-798, Jun 2018.

[55]    I. S. Amiri et al., "A widely tunable dual-wavelength based on a microring resonator filter device," (in English), Laser Phys., Article vol. 28, no. 6, p. 5, Jun 2018.
[56]    I. S. Amiri, M. M. Ariannejad, D. Vigneswaran, C. S. Lim, and P. Yupapin, "Performances and procedures modules in micro electro mechanical system packaging technologies," (in English), Results Phys., Article vol. 11, pp. 306-314, Dec 2018.

[57]    I. S. Amiri, N. A. Hassan, and H. Ahmad, "Multiple supercontinuum generation based on a single mode-locked seed fiber laser," (in English), Microw. Opt. Technol. Lett., Article vol. 60, no. 4, pp. 845-849, Apr 2018.

[58]    I. S. Amiri, V. J. Sorger, M. M. Ariannejad, X. Ling, M. Ghasemi, and P. Yupapin, "Channel resolution enhancement through scalability of nano/micro-scale thickness and width of SU-8 polymer based optical channels using UV lithography," (in English), Microsyst. Technol., Article vol. 24, no. 3, pp. 1673-1681, Mar 2018.

[59]    I. S. Amiri, R. Zakaria, T. Anwar, M. Bahadoran, D. Vigneswaran, and P. Yupapin, "Dual wavelength optical duobinary modulation using GaAs-AlGaAs microring resonator," (in English), Results Phys., Article vol. 11, pp. 1087-1093, Dec 2018.

[60]    M. M. Ariannejad, E. Akbari, and I. S. Amiri, "Micro-ring resonator made by ion exchange technique and detecting benzene (C6H6), propanol (C3H7OH) and methane (CH4) as cladding layer," (in English), Laser Phys., Article vol. 28, no. 10, p. 6, Oct 2018.

[61]    M. M. Ariannejad, I. S. Amiri, H. Ahmad, and P. Yupapin, "A large free spectral range of 74.92 GHz in comb peaks generated by SU-8 polymer micro-ring resonators: simulation and experiment," (in English), Laser Phys., Article vol. 28, no. 11, p. 9, Nov 2018.

[62]    M. M. Ariannejad, I. S. Amiri, S. R. B. Azzuhri, R. Zakaria, and P. Yupapin, "Polarization dependence of SU-8 micro ring resonator," (in English), Results Phys., Article vol. 11, pp. 515-522, Dec 2018.

[63]    S. R. Azzuhri et al., "Application of graphene oxide based Microfiber-Knot resonator for relative humidity sensing," (in English), Results Phys., Article vol. 9, pp. 1572-1577, Jun 2018.

[64]    L. Chambre et al., "Surfactant-Free Direct Access to Porphyrin-Cross-Linked Nanogels for Photodynamic and Photothermal Therapy," (in English), Bioconjugate Chem., Article vol. 29, no. 12, pp. 4149-4159, Dec 2018.

[65]    S. P. Chew et al., "Singlemode-multimode-singlemode fiber structure as compressive strain sensor on a reinforced concrete beam," (in English), Optik, Article vol. 154, pp. 705-710, 2018.

[66]    X. Z. Ding et al., "Mach-Zehnder interferometric magnetic field sensor based on a photonic crystal fiber and magnetic fluid," (in English), Appl. Optics, Article vol. 57, no. 9, pp. 2050-2056, Mar 2018.

[67]    S. A. S. Husin, F. D. Muhammad, S. F. Norizan, A. Abd Latif, N. A. Awang, and M. Z. Zulkifli, "Narrow core standard single mode fiber for supercontinuum generation from graphene-based mode-locked pulses," (in English), Optik, Article vol. 172, pp. 347-352, 2018.

[68]    N. M. Isa, N. Irawati, S. W. Harun, F. Ahmad, H. A. Rahman, and M. H. M. Yusoff, "Multi-walled carbon nanotubes doped Poly(Methyl MethAcrylate) microfiber for relative humidity sensing," (in English), Sens. Actuator A-Phys., Article vol. 272, pp. 274-280, Apr 2018.

[69]    N. S. A. Jaafar, S. Sepeai, K. S. Lim, M. K. A. Zaini, H. Ahmad, and G. H. Tan, "A novel waveguide design that produces an elongated laser beam output for soft tissue ablation," (in English), Optik, Article vol. 164, pp. 561-566, 2018.

[70]    M. F. Jaddoa, J. F. Odah, H. Ahmad, I. S. Amiri, and Z. C. Tiu, "Dual-wavelength Q-switched pulse generation using D-fibre and MoS2 saturable absorber," (in English), Ukr. J. Phys. Opt., Article vol. 19, no. 1, pp. 27-32, 2018.

[71]    A. Karabchevsky, A. Katiyi, M. Khudus, and A. V. Kavokin, "Tuning the Near-Infrared Absorption of Aromatic Amines on Tapered Fibers Sculptured with Gold Nanoparticles," (in English), ACS Photonics, Article vol. 5, no. 6, pp. 2200-2207, Jun 2018.

[72]    M. R. Karim, H. Ahmad, S. Ghosh, and B. M. A. Rahman, "Mid-infrared supercontinuum generation using As2Se3 photonic crystal fiber and the impact of higher-order dispersion parameters on its supercontinuum bandwidth," (in English), Opt. Fiber Technol., Article vol. 45, pp. 255-266, Nov 2018.

[73]    M. R. Karim, H. Ahmad, S. Ghosh, and B. M. A. Rahman, "Design of dispersion-engineered As2Se3 channel waveguide for mid-infrared region supercontinuum generation," (in English), J. Appl. Phys., Article vol. 123, no. 21, p. 6, Jun 2018.

[74]    M. R. Karim, H. Ahmad, and B. M. A. Rahman, "Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation," (in English), J. Opt. Soc. Am. B-Opt. Phys., Article vol. 35, no. 2, pp. 266-275, Feb 2018.

[75]    N. Kasim, A. A. Latiff, M. F. M. Rusdi, M. B. Hisham, S. W. Harun, and N. F. Razak, "Short-pulsed Q-switched Thulium doped fiber laser with graphene oxide as a saturable absorber," (in English), Optik, Article vol. 168, pp. 462-466, 2018.

[76]    A. A. Latiff, X. S. Cheng, M. F. M. Rusdi, M. C. Paul, S. W. Harun, and H. Ahmad, "Molybdenum disulfide saturable absorber for eye-safe mode-locked fiber laser generation," (in English), J. Nonlinear Opt. Phys. Mater., Article vol. 27, no. 1, p. 9, Mar 2018.

[77]    Y. S. Lee, K. S. Lim, M. K. A. Zaini, and H. Ahmad, "Mode Splitting Based on Polarization Manipulation in Few-Mode Fiber," (in English), IEEE J. Quantum Electron., Article vol. 54, no. 4, p. 6, Aug 2018.

[78]    S. Li et al., "A Microfiber Knot Incorporating a Tungsten Disulfide Saturable Absorber Based Multi-Wavelength Mode-Locked Erbium-Doped Fiber Laser," (in English), J. Lightwave Technol., Article vol. 36, no. 23, pp. 5633-5639, Dec 2018.

[79]    M. Q. Lokman et al., "Deposition of silver nanoparticles on polyvinyl alcohol film using electron beam evaporation and its application as a passive saturable absorber," (in English), Results Phys., Article vol. 11, pp. 232-236, Dec 2018.

[80]    K. Lu et al., "Effect of two annealing processes on the thermal regeneration of fiber Bragg gratings in hydrogenated standard optical fibers," (in English), Appl. Optics, Article vol. 57, no. 24, pp. 6971-6975, Aug 2018.

[81]    A. R. Muhammad et al., "ALL-FIBER YTTERBIUM DOPED Q-SWITCHED FIBER LASER BASED ON COPPER NANOPARTICLES SATURABLE ABSORBER," (in English), Dig. J. Nanomater. Biostruct., Article vol. 13, no. 1, pp. 279-284, Jan-Mar 2018.

[82]    F. D. Muhammad, M. Z. Zulkifli, and H. Ahmad, "1500-nm Q-switched fibre laser with carbon nanotubes," (in English), Quantum Electron., Article vol. 48, no. 10, pp. 941-944, 2018.

[83]    N. A. M. Nazal et al., "Demarcation energy properties of regenerated fiber Bragg grating sensors in few-mode fibers," (in English), Opt. Appl., Article vol. 48, no. 2, pp. 263-271, 2018.

[84]    B. K. Paul et al., "Design and analysis of slotted core photonic crystal fiber for gas sensing application," (in English), Results Phys., Article vol. 11, pp. 643-650, Dec 2018.

[85]    M. F. A. Rahman et al., "An 8 cm long holmium-doped fiber saturable absorber for Q-switched fiber laser generation at 2-mu m region," (in English), Opt. Fiber Technol., Article vol. 43, pp. 67-71, Jul 2018.

[86]    M. F. A. Rahman et al., "Q-switched and mode-locked thulium-doped fiber laser with pure Antimony film Saturable absorber," (in English), Opt. Commun., Article vol. 421, pp. 99-104, Aug 2018.

[87]    M. F. A. Rahman et al., "Pure antimony film as saturable absorber for Q-switched erbium-doped fiber laser," (in English), J. Mod. Opt., Article vol. 65, no. 7, pp. 811-817, 2018.

[88]    P. H. Reddy et al., "Titanium dioxide doped fiber as a new saturable absorber for generating mode-locked erbium doped fiber laser," (in English), Optik, Article vol. 158, pp. 1327-1333, 2018.

[89]    Z. U. Rehman, L. Na, C. L. Tan, M. Irfan, A. Qayyum, and K. A. Janulewicz, "Enhancement of confined femto-ablation at SiO2/Si interface by embedded metallic nanoparticles," (in English), Mater. Today Phys., Article vol. 4, pp. 58-63, Mar 2018.

[90]    M. F. M. Rusdi, M. B. H. Mahyuddin, A. A. Latiff, H. Ahmad, and S. W. Harun, "Q-Switched Erbium-Doped Fiber Laser Using Cadmium Selenide Coated onto Side-Polished D-Shape Fiber as Saturable Absorber," (in English), Chin. Phys. Lett., Article vol. 35, no. 10, p. 4, Oct 2018.

[91]    R. Safaei, I. S. Amiri, M. Rezayi, and H. Ahmad, "A stable dual-wavelength Q-switch using a compact passive device containing photonics crystal fiber embedded with carbon platinum," (in English), Laser Phys., Article vol. 28, no. 1, p. 7, Jan 2018.

[92]    R. Safaei et al., "S Generation of four-wave mixing with highly sharp idlers using 2 mm home-made side-polished fiber deposited by ZnO nanorod," (in English), Laser Phys., Article vol. 28, no. 7, p. 8, Jul 2018.

[93]    W. S. Saw et al., "Size-dependent effect of cystine/citric acid-capped confeito-like gold nanoparticles on cellular uptake and photothermal cancer therapy," (in English), Colloid Surf. B-Biointerfaces, Article vol. 161, pp. 365-374, Jan 2018.

[94]    A. S. Sharbirin, M. F. Ismail, and H. Ahmad, "Isolator-free, widely tunable thulium/holmium fiber laser," (in English), Malays. J. Fundam. Appl. Sci., Article vol. 14, pp. 439-442, 2018.

[95]    A. S. Sharbirin, M. Z. Samion, M. F. Ismail, and H. Ahmad, "Ultrafast mode-locked dual-wavelength thulium-doped fiber laser using a Mach-Zehnder interferometric filter," (in English), Opto-Electron. Rev., Article vol. 26, no. 4, pp. 312-316, Dec 2018.

[96]    N. A. Siddiq, W. Y. Chong, Y. K. Yap, Y. H. Pramono, and H. Ahmad, "Tin(IV) oxide nanoparticles as a saturable absorber for a Q-switched erbium-doped fiber laser," (in English), Laser Phys., Article vol. 28, no. 12, p. 6, Dec 2018.

[97]    D. Tan et al., "Phase derivative thermo-spatiogram for distributed temperature sensing based on chirped grating-Michelson Interferometer," (in English), Sens. Actuator A-Phys., Article vol. 278, pp. 43-47, Aug 2018.

[98]    E. Vorathin, Z. M. Hafizi, A. M. Aizzuddin, and K. S. Lim, "A natural rubber diaphragm based transducer for simultaneous pressure and temperature measurement by using a single FBG," (in English), Opt. Fiber Technol., Article vol. 45, pp. 8-13, Nov 2018.

[99]    E. Vorathin, Z. M. Hafizi, A. M. Aizzuddin, and K. S. Lim, "A highly sensitive multiplexed FBG pressure transducer based on natural rubber diaphragm and ultrathin aluminium sheet," (in English), Opt. Laser Technol., Article vol. 106, pp. 177-181, Oct 2018.

[100]    E. Vorathin, Z. M. Hafizi, S. A. C. Ghani, J. P. Siregar, and K. S. Lim, "FBGs Real-Time Impact Damage Monitoring System of GFRP Beam Based on CC-LSL Algorithm," (in English), Int. J. Struct. Stab. Dyn., Article vol. 18, no. 5, p. 23, May 2018.

[101]    S. Yusoff, C. S. Lim, S. R. Azzuhri, H. Ahmad, and R. Zakaria, "Studies of Ag/TiO2 plasmonics structures integrated in side polished optical fiber used as humidity sensor," (in English), Results Phys., Article vol. 10, pp. 308-316, Sep 2018.

[102]    S. Yusoff et al., "Detection of moisture content in transformer oil using platinum coated on D-shaped optical fiber," (in English), Opt. Fiber Technol., Article vol. 45, pp. 115-121, Nov 2018.

[103]    M. K. A. Zaini, M. H. Lai, M. R. Islam, K. S. Lim, and H. Ahmad, "Cancellation of birefringence in DBR laser through principal axis offset by a rotation of 90 degrees," (in English), Indian J. Phys., Article vol. 92, no. 8, pp. 1045-1048, Aug 2018.

[104]    M. K. A. Zaini, Y. S. Lee, K. S. Lim, N. A. M. Nazal, H. Z. Yang, and H. Ahmad, "Enhanced Optical Delay Line in Few-Mode Fiber Based on Mode Conversion Using Few-Mode Fiber Bragg Gratings," (in English), IEEE J. Quantum Electron., Article vol. 54, no. 5, p. 7, Oct 2018.

[105]    P. Zhang et al., "Temperature-independent hygrometry using micromachined photonic crystal fiber," (in English), Appl. Optics, Article vol. 57, no. 15, pp. 4237-4244, May 2018.

[106]    M. Z. Zulkifli, K. Y. Lau, H. Kbashi, M. Yasin, and M. A. Mahdi, "A self-pulsing ring cavity ultra-long Raman fiber laser," (in English), Laser Phys., Article vol. 28, no. 11, p. 5, Nov 2018.

[1]    A. abd Manaf, M. Ghadiry, R. Soltanian, H. Ahmad, and C. K. Lai, "Picomole Dopamine Detection Using Optical Chips," (in English), Plasmonics, Article vol. 12, no. 5, pp. 1505-1510, Oct 2017.

[2]    H. Ahmad, S. N. Aidit, N. A. Hassan, S. I. Ooi, and Z. C. Tiu, "Tunable mode-locked laser with micro-air gap cavity," (in English), Opt. Laser Technol., Article vol. 88, pp. 222-225, Feb 2017.

[3]    H. Ahmad, S. N. Aidit, S. I. Ooi, M. Rezayi, and Z. C. Tiu, "Passively Q-switched and mode-locked erbium doped fiber laser based on N-doped graphene saturable absorber," (in English), Laser Phys., Article vol. 27, no. 10, p. 7, Oct 2017.

[4]    H. Ahmad, S. N. Aidit, K. Thambiratnam, and Z. C. Tiu, "Passively Q-switched O-band praseodymium doped fluoride fibre laser with PVA/graphene based SA," (in English), Electron. Lett., Article vol. 53, no. 22, pp. 1481-+, Oct 2017.

[5]    H. Ahmad, S. N. Aidit, Z. C. Tiu, M. F. Ismail, M. Suthaskumar, and S. W. Harun, "Application of MoS2 thin film in multi-wavelength and Q-switched EDFL," (in English), J. Mod. Opt., Article vol. 64, no. 5, pp. 457-461, 2017.

[6]    H. Ahmad et al., "High sensitivity surface plasmon resonance (SPR) refractive index sensor in 1.5 mu m," (in English), Mater. Express, Article vol. 7, no. 2, pp. 145-150, Apr 2017.

[7]    H. Ahmad, I. S. Amiri, A. Z. Zulkifli, H. Hassan, R. Safaei, and K. Thambiratnam, "Stable dual-wavelength erbium-doped fiber laser using novel fabricated side-polished arc-shaped fiber with deposited ZnO nanoparticles," (in English), Chin. Opt. Lett., Article vol. 15, no. 1, p. 5, Jan 2017.

[8]    H. Ahmad et al., "A combination of tapered fibre and polarization controller in generating highly stable and tunable dual-wavelength C-band laser," (in English), J. Mod. Opt., Article vol. 64, no. 7, pp. 709-715, Nov 2017.

[9]    H. Ahmad, M. J. Faruki, M. Z. A. Razak, Z. C. Tiu, and M. F. Ismail, "Evanescent field interaction of tapered fiber with graphene oxide in generation of wide-bandwidth mode-locked pulses," (in English), Opt. Laser Technol., Article vol. 88, pp. 166-171, Feb 2017.

[10]    H. Ahmad, M. J. Faruki, Z. C. Tiu, and K. Thambiratnam, "Sub-nanometer tuning of mode-locked pulse by mechanical strain on tapered fiber," (in English), Opt. Commun., Article vol. 387, pp. 84-88, Mar 2017.

[11]    H. Ahmad et al., "Gold Cone Metasurface MIC Sensor with Monolayer of Graphene and Multilayer of Graphite," (in English), Plasmonics, Article vol. 12, no. 2, pp. 497-508, Apr 2017.

[12]    H. Ahmad, H. Hassan, R. Safaei, K. Thambiratnam, and I. S. Amiri, "Q-switched fiber laser using carbon platinum saturable absorber on side-polished fiber," (in English), Chin. Opt. Lett., Article vol. 15, no. 9, p. 5, Sep 2017.

[13]    H. Ahmad, H. Hassan, R. Safaei, K. Thambiratnam, M. F. Ismail, and I. S. Amiri, "Molybdenum disulfide side-polished fiber saturable absorber Q-switched fiber laser," (in English), Opt. Commun., Article vol. 400, pp. 55-60, Oct 2017.

[14]    H. Ahmad, H. Hassan, A. Z. Zulkifli, K. Thambiratnam, and I. S. Amiri, "Characterization of arc-shaped side-polished fiber," (in English), Opt. Quantum Electron., Article vol. 49, no. 6, p. 13, Jun 2017.

[15]    H. Ahmad, N. A. Hassan, S. N. Aidit, S. I. Ooi, S. W. Harun, and Z. C. Tiu, "Q-switching pulse generation using black phosphorus tape saturable absorber," (in English), Optoelectron. Adv. Mater.-Rapid Commun., Article vol. 11, no. 1-2, pp. 1-6, Jan-Feb 2017.

[16]    H. Ahmad et al., "S-band Q-switched fiber laser using MoSe2 saturable absorber," (in English), Opt. Commun., Article vol. 382, pp. 93-98, Jan 2017.

[17]    H. Ahmad and A. A. Jasim, "Fabrication and Characterization of 2 x 2 Microfiber Coupler for Generating Two Output Stable Multiwavelength Fiber Lasers," (in English), J. Lightwave Technol., Article vol. 35, no. 19, pp. 4227-4233, Oct 2017.

[18]    H. Ahmad and A. A. Jasim, "Stable C-band fiber laser with switchable multi-wavelength output using coupled microfiber Mach-Zehnder interferometer," (in English), Opt. Fiber Technol., Article vol. 36, pp. 105-114, Jul 2017.

[19]    H. Ahmad, A. A. Jasim, M. J. Faruki, M. S. Rahman, and K. Thambiratnam, "Poly (N-vinylcarbazole)-polypyrrole/graphene oxide nanocomposites based microfiber interferometer for high stability temperature sensor," (in English), Sens. Actuator A-Phys., Article vol. 263, pp. 44-53, Aug 2017.

[20]    H. Ahmad, A. Muhamad, A. S. Sharbirin, M. Z. Samion, and M. F. Ismail, "Tunable Q-switched thulium-doped Fiber Laser using multiwall carbon nanotube and Fabry-Perot Etalon filter," (in English), Opt. Commun., Article vol. 383, pp. 359-365, Jan 2017.

[21]    H. Ahmad et al., "Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation technique," (in English), Chin. Opt. Lett., Article vol. 15, no. 5, p. 5, May 2017.

[22]    H. Ahmad, S. I. Ooi, M. Z. Samion, A. A. Jasim, and Z. C. Tiu, "Tunable and switchable Brillouin multi-wavelength thulium fluoride fiber laser in S/S plus band region," (in English), Opt. Commun., Article vol. 397, pp. 91-94, Aug 2017.

[23]    H. Ahmad et al., "Graphene oxide (GO)-based wideband optical polarizer using a non-adiabatic microfiber," (in English), J. Mod. Opt., Article vol. 64, no. 5, pp. 439-444, 2017.

[24]    H. Ahmad, S. A. Reduan, S. N. Aidit, and Z. C. Tiu, "Generation of passively Q-switched fiber laser at 1 mu m by using MoSSe as a saturable absorber," (in English), Chin. Opt. Lett., Article vol. 15, no. 2, p. 5, Feb 2017.

[25]    H. Ahmad, S. A. Reduan, N. A. Hassan, S. I. Ooi, and Z. C. Tiu, "S-band Q-switched thulium fluoride fiber laser using graphene saturable absorber," (in English), Laser Phys., Article vol. 27, no. 7, p. 6, Jul 2017.

[26]    H. Ahmad, S. A. Reduan, and R. Safaei, "Dual-wavelength Q-switched thulium-fluoride fiber laser for S/S band using molybdenum disulfide (MoS2) as a saturable absorber," (in English), Laser Phys., Article vol. 27, no. 6, p. 7, Jun 2017.

[27]    H. Ahmad, S. A. Reduan, A. Z. Zulkifli, and Z. C. Tiu, "Tunable passively Q-switched thulium-fluoride fiber laser in the S+/S band (1450.0 to 1512.0 nm) region using a single-walled carbon-nanotube-based saturable absorber," (in English), Appl. Optics, Article vol. 56, no. 13, pp. 3841-3847, May 2017.

[28]    H. Ahmad, R. Safaei, M. Rezayi, and I. S. Amiri, "Novel D-shaped fiber fabrication method for saturable absorber application in the generation of ultra-short pulses," (in English), Laser Phys. Lett., Article vol. 14, no. 8, p. 7, Aug 2017.

[29]    H. Ahmad, S. N. A. Sakeh, Z. Muda, M. Z. Zulkifli, and S. W. Harun, "Multiwavelength Brillouin fibre laser in two-mode fiber," (in English), J. Mod. Opt., Article vol. 64, no. 17, pp. 1744-1750, 2017.

[30]    H. Ahmad and M. A. M. Salim, "TiO2-Based Q-Switched Ytterbium-Doped Fiber Laser," (in English), IEEE J. Quantum Electron., Article vol. 53, no. 5, p. 6, Oct 2017.

[31]    H. Ahmad et al., "Tunable 2.0 mu m Q-switched fiber laser using a silver nanoparticle based saturable absorber," (in English), Laser Phys., Article vol. 27, no. 6, p. 7, Jun 2017.

[32]    H. Ahmad, M. Z. Samion, A. S. Sharbirin, and M. F. Ismail, "Dual-wavelength, passively Q-switched thulium-doped fiber laser with N-doped graphene saturable absorber," (in English), Optik, Article vol. 149, pp. 391-397, 2017.

[33]    H. Ahmad, A. S. Sharbirin, A. Muhamad, M. Z. Samion, and M. F. Ismail, "2 mu m mode-locked thulium-doped fiber laser using Mach-Zehnder interferometer tuning capability," (in English), Laser Phys., Article vol. 27, no. 6, p. 7, Jun 2017.

[34]    H. Ahmad et al., "Aluminized Film as Saturable Absorber for Generating Passive Q-Switched Pulses in the Two-Micron Region," (in English), J. Lightwave Technol., Article vol. 35, no. 12, pp. 2470-2475, Jun 2017.

[35]    H. Ahmad, A. S. Sharbirin, M. Z. Samion, and M. F. Ismail, "All-fiber multimode interferometer for the generation of a switchable multi-wavelength thulium-doped fiber laser," (in English), Appl. Optics, Article vol. 56, no. 21, pp. 5865-5870, Jul 2017.

[36]    H. Ahmad, R. A. A. Tahrin, N. Azman, S. Kassim, M. A. Ismail, and M. J. Maah, "1.5-micron fiber laser passively mode-locked by gold nanoparticles saturable absorber," (in English), Opt. Commun., Article vol. 403, pp. 115-120, Nov 2017.

[37]    H. Ahmad, M. Tajdidzadeh, M. Rezayi, and I. S. Amiri, "Passive mode-locking at S-band by single-mode thulium-doped fluoride fiber using a thin film PtAg/N-G saturable absorber," (in English), J. Nanophotonics, Article vol. 11, no. 2, p. 11, Apr 2017.

[38]    H. Ahmad and T. M. K. Thandavan, "Characterization of graphene oxide/silicon dioxide/p-type silicon heterojunction photodetector towards infrared 974 nm illumination," (in English), Opt. Quantum Electron., Article vol. 49, no. 12, p. 12, Dec 2017.

[39]    H. Ahmad and T. M. K. Thandavan, "The influence of aqueous sodium dodecyl sulphate solution in the photoresponsivity of nitrogen doped graphene oxide photodetector," (in English), Opt. Mater., Article vol. 73, pp. 441-448, Nov 2017.

[40]    H. Ahmad, T. M. K. Thandavan, M. M. Ariannejad, C. W. Yi, R. M. Nor, and I. S. Amiri, "Enhanced Photoresponsivity From Hybrid-ZnO Nanowires With White LED 400-700-nm Illumination," (in English), IEEE J. Quantum Electron., Article vol. 53, no. 5, p. 6, Oct 2017.

[41]    H. Ahmad, A. Z. Zulkifli, S. I. Ooi, and Z. C. Tiu, "Stable dual-wavelength thulium-doped fluoride fiber laser at S-band region with WS2 as birefringence element," (in English), Optik, Article vol. 142, pp. 234-242, 2017.

[42]    H. Ahmad, A. Z. Zulkifli, and K. Thambiratnam, "Tunable Q-switched erbium-doped fiber laser based on curved multimode fiber and graphene oxide saturable absorber," (in English), Laser Phys., Article vol. 27, no. 5, p. 7, May 2017.

[43]    M. T. Ahmad et al., "Gold nanoparticle based saturable absorber for Q-switching in 1.5 mu m laser application," (in English), Laser Phys., Article vol. 27, no. 11, p. 5, Nov 2017.

[44]    M. H. M. Ahmed, A. H. H. Al-Masoodi, A. A. Latiff, H. Arof, and S. W. Harun, "Mechanically exfoliated 2D nanomaterials as saturable absorber for Q-switched erbium doped fiber laser," (in English), Indian J. Phys., Article vol. 91, no. 10, pp. 1259-1264, Oct 2017.

[45]    A. H. H. Al-Masoodi, M. H. M. Ahmed, A. A. Latiff, H. Arof, and S. W. Harun, "Passively Q-switched Ytterbium doped fiber laser with mechanically exfoliated MoS2 saturable absorber," (in English), Indian J. Phys., Article vol. 91, no. 5, pp. 575-580, May 2017.

[46]    A. H. H. Al-Masoodi, M. H. M. Ahmed, A. A. Latiff, S. R. Azzuhri, H. Arof, and S. W. Harun, "Passively mode-locked ytterbium-doped fiber laser operation with few layer MoS2 PVA saturable absorber," (in English), Optik, Article vol. 145, pp. 543-548, 2017.

[47]    A. H. H. Al-Masoodi, M. Yasin, M. H. M. Ahmed, A. A. Latiff, H. Arof, and S. W. Harun, "Mode-locked ytterbium-doped fiber laser using mechanically exfoliated black phosphorus as saturable absorber," (in English), Optik, Article vol. 147, pp. 52-58, 2017.

[48]    O. Almubaied, H. K. Chai, M. R. Islam, K. S. Lim, and C. G. Tan, "Monitoring Corrosion Process of Reinforced Concrete Structure Using FBG Strain Sensor," (in English), IEEE Trans. Instrum. Meas., Article vol. 66, no. 8, pp. 2148-2155, Aug 2017.

[49]    I. Amiri et al., "Simulation of microring resonator filters based ion-exchange buried waveguide using nano layer of graphene," (in English), J. Opt.-India, Article vol. 46, no. 4, pp. 506-514, Dec 2017.

[50]    I. S. Amiri et al., "PERFORMANCE ANALYSIS OF COPPER TIN SULFIDE, Cu2SnS3 (CTS) WITH VARIOUS BUFFER LAYERS BY USING SCAPS IN SOLAR CELLS," (in English), Surf. Rev. Lett., Article vol. 24, no. 6, p. 10, Aug 2017.

[51]    I. S. Amiri, S. E. Alavi, S. Punthawanunt, P. Yupapin, and P. Youplao, "Multi-optical carrier generation using a microring resonator to enhance the number of serviceable channels in radio over free space optic," (in English), Microw. Opt. Technol. Lett., Article vol. 59, no. 8, pp. 2038-2044, Aug 2017.

[52]    I. S. Amiri, M. M. Ariannejad, H. Ahmad, and P. Yupapin, "Simulation of mode lock lasers using microring resonators integrated with InGaAsP saturable absorbers," (in English), Indian J. Phys., Article vol. 91, no. 11, pp. 1411-1415, Nov 2017.

[53]    I. S. Amiri, M. M. Ariannejad, M. F. Ismail, and H. Ahmad, "Analysis of semiconductor InGaAsP/InP coupled microring resonators (CMRR) by time-domain travelling wave (TDTW) method," (in English), J. Opt.-India, Article vol. 46, no. 3, pp. 311-319, Sep 2017.

[54]    I. S. Amiri, M. M. Ariannejad, M. Z. Zulkifli, and H. Ahmad, "Multiband dual polarized OFDM signal: Generation and distribution over fiber," (in English), Optik, Article vol. 131, pp. 899-905, 2017.

[55]    I. S. Amiri, M. N. Hindia, A. W. Reza, H. Ahmad, and P. Yupapin, "LTE smart grid performance gains with additional remote antenna units via radio over fiber using a microring resonator system," (in English), Opt. Switch. Netw., Article vol. 25, pp. 13-23, Jul 2017.

[56]    N. A. Aziz, A. A. Latiff, M. Q. Lokman, E. Hanafi, and S. W. Harun, "Zinc Oxide-Based Q-Switched Erbium-Doped Fiber Laser," (in English), Chin. Phys. Lett., Article vol. 34, no. 4, p. 3, Mar 2017.

[57]    I. M. Babar, S. W. Harun, M. Yasin, and H. Ahmad, "Mode-locking pulse generation in cladding pumped Erbium-Ytterbium co-doped fiber laser with graphene PVA film," (in English), Optik, Article vol. 136, pp. 531-535, 2017.

[58]    S. P. Chew et al., "Water wave gauge based on singlemode-multimode-singlemode fiber structure," (in English), Optik, Article vol. 144, pp. 232-239, 2017.

[59]    S. Chiangga, S. Suwanarat, I. S. Amiri, and P. Yupapin, "Mid-infrared supercontinuum generation using a silicon racetrack resonator," (in English), Appl. Phys. B-Lasers Opt., Article vol. 123, no. 3, p. 12, Mar 2017.

[60]    W. Y. Chong, Y. K. Yap, S. Behameen, and H. Ahmad, "Study of a high output coupling ratio Q-switched erbium-doped fibre laser using MoS2 saturable absorber," (in English), Laser Phys., Article vol. 27, no. 2, p. 7, Feb 2017.

[61]    M. Doris et al., "Determining the Effect of Centrifugal Force on the Desired Growth and Properties of PCPDTBT as p-Type Nanowires," (in English), Nanoscale Res. Lett., Article vol. 12, p. 11, Jan 2017.

[62]    M. Ghadiry, M. Gholami, A. Nam, and S. Azhuri, "High Performance Optical Humidity Sensing on Chip Using Differential Refractive Index," (in English), Sci. Adv. Mater., Article vol. 9, no. 8, pp. 1385-1392, Aug 2017.

[63]    D. S. Gunawardena, M. H. Lai, K. S. Lim, and H. Ahmad, "Thermal decay analysis of fiber Bragg gratings at different temperature annealing rates using demarcation energy approximation," (in English), Opt. Fiber Technol., Article vol. 34, pp. 16-19, Mar 2017.

[64]    Z. Harith, M. Batumalay, N. Irawati, S. W. Harun, H. Arof, and H. Ahmad, "Relative humidity sensor employing tapered plastic optical fiber coated with seeded Al-doped ZnO," (in English), Optik, Article vol. 144, pp. 257-262, 2017.

[65]    N. Hisamuddin et al., "Q-switched Raman fiber laser with titanium dioxide based saturable absorber," (in English), Optoelectron. Adv. Mater.-Rapid Commun., Article vol. 11, no. 3-4, pp. 127-130, Mar-Apr 2017.

[66]    M. B. Hisyam, M. F. M. Rusdi, A. A. Latiff, and S. W. Harun, "Generation of Mode-Locked Ytterbium Doped Fiber Ring Laser Using Few-Layer Black Phosphorus as a Saturable Absorber," (in English), IEEE J. Sel. Top. Quantum Electron., Article vol. 23, no. 1, p. 5, Jan-Feb 2017.

[67]    N. Irawati, T. N. R. Abdullan, H. A. Rahman, H. Ahmad, and S. W. Harun, "PMMA microfiber loop resonator for humidity sensor," (in English), Sens. Actuator A-Phys., Article vol. 260, pp. 112-116, Jun 2017, doi: 10.1016/j.sna.2017.04.041.
  [68]    N. Irawati, A. M. Aris, H. A. Rahman, Z. Jusoh, S. W. Harun, and M. Batumalay, "MONITORING OF YEAST CELL CONCENTRATION USING A COUPLED MICROFIBER BASED OPTICAL SENSOR," (in English), J. Optoelectron. Biomed. Mater., Article vol. 9, no. 3, pp. 129-134, Jul-Sep 2017.

[69]    N. Irawati, S. W. Harun, H. A. Rahman, S. S. Chong, N. A. Hamizi, and H. Ahmad, "Temperature sensing using CdSe quantum dot doped poly(methyl methacrylate) microfiber," (in English), Appl. Optics, Article vol. 56, no. 16, pp. 4675-4679, Jun 2017.

[70]    N. Irawati, N. M. Isa, A. F. Mohamed, H. A. Rahman, S. W. Harun, and H. Ahmad, "Optical Microfiber Sensing of Adulterated Honey," (in English), IEEE Sens. J., Article vol. 17, no. 17, pp. 5510-5514, Sep 2017.

[71]    N. Irawati, H. A. Rahman, H. Ahmad, and S. W. Harun, "A PMMA microfiber loop resonator based humidity sensor with ZnO nanorods coating," (in English), Measurement, Article vol. 99, pp. 128-133, Mar 2017.

[72]    N. Irawati et al., "Relative Humidity Sensing Using a PMMA Doped Agarose Gel Microfiber," (in English), J. Lightwave Technol., Article vol. 35, no. 18, pp. 3940-3944, Sep 2017.

[73]    N. Irawati, N. A. M. Yusuf, H. A. Rahman, M. Yasin, H. Ahmad, and S. W. Harun, "Potassium permanganate (KMnO4) sensing based on microfiber sensors," (in English), Appl. Optics, Article vol. 56, no. 2, pp. 224-228, Jan 2017.

[74]    A. A. Jasim and H. Ahmad, "A highly stable and switchable dual-wavelength laser using coupled microfiber Mach-Zehnder interferometer as an optical filter," (in English), Opt. Laser Technol., Article vol. 97, pp. 12-19, Dec 2017.

[75]    A. A. Jasim, J. Faruki, M. F. Ismail, and H. Ahmad, "Fabrication and Characterization of Microbent Inline Microfiber Interferometer for Compact Temperature and Current Sensing Applications," (in English), J. Lightwave Technol., Article vol. 35, no. 11, pp. 2150-2155, Jun 2017.

[76]    X. J. Jiang, T. Lee, J. He, M. Khudus, and G. Brambilla, "Fundamental-mode third harmonic generation in microfibers by pulse-induced quasi-phase matching," (in English), Opt. Express, Article vol. 25, no. 19, pp. 22626-22639, Sep 2017.

[77]    N. A. A. Kadir, E. I. Ismail, A. A. Latiff, H. Ahmad, H. Arof, and S. W. Harun, "Transition Metal Dichalcogenides (WS2 and MoS2) Saturable Absorbers for Mode-Locked Erbium-Doped Fiber Lasers," (in English), Chin. Phys. Lett., Article vol. 34, no. 1, p. 4, Jan 2017.

[78]    M. R. Karim, H. Ahmad, and B. M. A. Rahman, "All-Normal Dispersion Chalcogenide PCF for Ultraflat Mid-Infrared Supercontinuum Generation," (in English), IEEE Photonics Technol. Lett., Article vol. 29, no. 21, pp. 1792-1795, Nov 2017.

[79]    M. R. Karim, H. Ahmad, and B. M. A. Rahman, "All-Normal-Dispersion Chalcogenide Waveguides for Ultraflat Supercontinuum Generation in the Mid-Infrared Region," (in English), IEEE J. Quantum Electron., Article vol. 53, no. 2, p. 6, Apr 2017.

[80]    M. H. Lai, K. S. Lim, D. S. Gunawardena, Y. S. Lee, and H. Ahmad, "CO2 Laser Applications in Optical Fiber Components Fabrication and Treatment: A Review," (in English), IEEE Sens. J., Review vol. 17, no. 10, pp. 2961-2974, May 2017.

[81]    A. A. Latiff, N. A. Kadir, E. I. Ismail, H. Shamsuddin, H. Ahmad, and S. W. Harun, "All-fiber dual-wavelength Q-switched and mode-locked EDFL by SMF-THDF-SMF structure as a saturable absorber," (in English), Opt. Commun., Article vol. 389, pp. 29-34, Apr 2017.

[82]    A. A. Latiff, M. F. M. Rusdi, M. B. Hisyam, H. Ahmad, and S. W. Harun, "A generation of 2 mu m Q-switched thulium-doped fibre laser based on anatase titanium(IV) oxide film saturable absorber," (in English), J. Mod. Opt., Article vol. 64, no. 2, pp. 187-190, 2017.

[83]    F. W. Lee, H. K. Chai, and K. S. Lim, "Characterizing concrete surface notch using Rayleigh wave phase velocity and wavelet parametric analyses," (in English), Constr. Build. Mater., Article vol. 136, pp. 627-642, Apr 2017.

[84]    Y. S. Lee, K. S. Lim, M. R. Islam, M. H. Lai, and H. Ahmad, "Dynamic LP01-LP11 Mode Conversion by a Tilted Binary Phase Plate," (in English), J. Lightwave Technol., Article vol. 35, no. 16, pp. 3597-3603, Aug 2017.

[85]    Y. S. Lee, K. S. Lim, M. K. A. Zaini, and H. Ahmad, "LP11-LP01 Mode Conversion Based on an Angled-Facet Two-Mode Fiber," (in English), IEEE Photonics Technol. Lett., Article vol. 29, no. 12, pp. 1007-1010, Jun 2017.

[86]    H. Liu et al., "Curvature and Temperature Measurement Based on a Few-Mode PCF Formed M-Z-I and an Embedded FBG," (in English), Sensors, Article vol. 17, no. 8, p. 11, Aug 2017.

[87]    D. Luo, P. Li, Y. C. Yue, J. X. Ma, and H. Z. Yang, "In-Fiber Optic Salinity Sensing: A Potential Application for Offshore Concrete Structure Protection," (in English), Sensors, Article vol. 17, no. 5, p. 10, May 2017.

[88]    M. B. H. Mahyuddin, A. A. Latiff, M. F. M. Rusdi, N. Irawati, and S. W. Harun, "Quantum dot cadmium selenide as a saturable absorber for Q-switched and mode-locked double-clad ytterbium-doped fiber lasers," (in English), Opt. Commun., Article vol. 397, pp. 147-152, Aug 2017.

[89]    A. R. Muhammad et al., "Q-Switching Pulse Operation in 1.5-mu m Region Using Copper Nanoparticles as Saturable Absorber," (in English), Chin. Phys. Lett., Article vol. 34, no. 3, p. 4, Mar 2017.

[90]    K. Z. Mustafa et al., "Graphene Oxide Doped SU-8 Waveguide and Its Application as Saturable Absorber," (in English), IEEE Photonics J., Article vol. 9, no. 5, p. 7, Oct 2017.

[91]    A. Nady, M. H. M. Ahmed, A. A. Latiff, A. Numan, C. H. R. Ooi, and S. W. Harun, "Nickel oxide nanoparticles as a saturable absorber for an all-fiber passively Q-switched erbium-doped fiber laser," (in English), Laser Phys., Article vol. 27, no. 6, p. 6, Jun 2017.

[92]    A. Nady et al., "Passively Q-switched erbium-doped fibre laser using cobalt oxide nanocubes as a saturable absorber," (in English), J. Mod. Opt., Article vol. 64, no. 13, pp. 1315-1320, 2017.

[93]    N. A. M. Nazal, K. S. Lim, M. K. A. Zaini, H. Z. Yang, and H. Ahmad, "Formation of enhanced regenerated grating in few-mode fiber by CO2 laser pretreatment," (in English), Appl. Optics, Article vol. 56, no. 36, pp. 9882-9887, Dec 2017.

[94]    N. Pornsuwancharoen, P. Youplao, I. S. Amiri, J. Ali, and P. Yupapin, "Electron driven mobility model by light on the stacked metal-dielectric interfaces," (in English), Microw. Opt. Technol. Lett., Article vol. 59, no. 7, pp. 1704-1709, Jul 2017.

[95]    H. Rahim, M. Q. Bin Lokman, S. W. Harun, J. Dutta, and W. S. Mohammed, "TEMPERATURE SENSING BY SIDE COUPLING OF LIGHT THROUGH ZINC OXIDE NANORODS ON OPTICAL FIBERS," (in English), Sens. Actuator A-Phys., Article vol. 257, pp. 15-19, Apr 2017.

[96]    M. F. A. Rahman et al., "Holmium Oxide Film as a Saturable Absorber for 2 mu m Q-Switched Fiber Laser," (in English), Chin. Phys. Lett., Article vol. 34, no. 5, p. 4, May 2017.

[97]    M. T. Rahman, F. A. Rashid, H. Ahmad, S. R. Azzuhri, M. Z. A. Razak, and M. J. Faruki, "Dual-wavelength ytterbium-doped fiber laser using microfiber and D-shaped polished fiber," (in English), Optik, Article vol. 130, pp. 1421-1425, 2017.

[98]    N. N. Razak, A. A. Latiff, Z. Zakaria, and S. W. Harun, "Q-switched Erbium-doped Fiber Laser with a Black Phosphorus Saturable Absorber," (in English), Photonics Lett. Pol., Article vol. 9, no. 2, pp. 72-74, 2017.

[99]    P. H. Reddy et al., "Erbium-Doped Zirconia-Alumina Silica Glass-Based Fiber as a Saturable Absorber for High Repetition Rate Q-Switched All-Fiber Laser Generation," (in English), Chin. Phys. Lett., Article vol. 34, no. 8, p. 4, Jul 2017.

[100]    S. A. Reduan and H. Ahmad, "Molybdenum disulfide (MoS2) - based, tunable passively Q-switched Thulium-Fluoride Fiber (TFF) laser," (in English), Malays. J. Fundam. Appl. Sci., Article vol. 13, no. 4, pp. 572-575, Oct-Dec 2017.

[101]    A. H. A. Rosol et al., "Cadmium Selenide Polymer Microfiber Saturable Absorber for Q-Switched Fiber Laser Applications," (in English), Chin. Phys. Lett., Article vol. 34, no. 9, p. 4, Aug 2017.

[102]    A. H. A. Rosol, H. A. Rahman, E. I. Ismail, Z. Jusoh, A. A. Latiff, and S. W. Harun, "Mode-locked fiber laser with a manganese-doped cadmium selenide saturable absorber," (in English), Chin. Opt. Lett., Article vol. 15, no. 7, p. 5, Jul 2017.

[103]    M. F. M. Rusdi et al., "Titanium Dioxide (TiO2) film as a new saturable absorber for generating mode-locked Thulium-Holmium doped all-fiber laser," (in English), Opt. Laser Technol., Article vol. 89, pp. 16-20, Mar 2017.

[104]    M. A. M. Salim, H. Ahmad, S. R. Azzuhri, M. Z. A. Razak, and S. W. Harun, "Tunable wavelength generation in the 1 mu m region incorporating a 16-channel arrayed waveguide grating (AWG)," (in English), Laser Phys., Article vol. 27, no. 12, p. 6, Dec 2017.

[105]    M. A. M. Salim, R. A. Shaharuddin, M. A. Ismail, S. W. Harun, H. Ahmad, and S. R. Azzuhri, "Bi2Te3 based passively Q-switched at 1042.76 and 1047 nm wavelength," (in English), Laser Phys., Article vol. 27, no. 12, p. 7, Dec 2017.

[106]    A. S. Sharbirin, M. Z. Samion, A. Muhamad, M. F. Ismail, and H. Ahmad, "Bidirectional-pumped tunable fiber laser using a voltage-controlled Fabry-Perot Etalon filter," (in English), Malays. J. Fundam. Appl. Sci., Article vol. 13, no. 3, pp. 290-293, Jul-Sep 2017.

[107]    S. Soltani, U. Rashid, I. A. Nehdi, and S. I. Al-Resayes, "Esterification of Palm Fatty Acid Distillate Using a Sulfonated Mesoporous CuO-ZnO Mixed Metal Oxide Catalyst," (in English), Chem. Eng. Technol., Article vol. 40, no. 10, pp. 1931-1939, Oct 2017, doi: 10.1002/ceat.201700138.

[108]    M. R. K. Soltanian, I. S. Amiri, M. M. Ariannejad, H. Ahmad, and P. Yupapin, "A simple humidity sensor utilizing air-gap as sensing part of the Mach-Zehnder interferometer," (in English), Opt. Quantum Electron., Article vol. 49, no. 9, p. 7, Sep 2017.

[109]    S. J. Tan, H. Haris, and S. W. Harun, "Switchable Brillouin frequency multiwavelength and pulsed fiber laser," (in English), Chin. Opt. Lett., Article vol. 15, no. 10, p. 5, Oct 2017.

[110]    Y. Wang et al., "Ultraviolet photoluminescence in Gd-doped silica and phosphosilicate fibers," (in English), APL Phontonics, Article vol. 2, no. 4, p. 6, Apr 2017.

[111]    Y. Wang et al., "All-fiber sixth-harmonic generation of deep UV," (in English), Opt. Lett., Article vol. 42, no. 22, pp. 4671-4674, Nov 2017.

[112]    S. L. Woon, K. M. Kwan, W. Y. Chong, H. S. Lin, and C. H. Pua, "Cascaded Acoustic Wave Sensors Based on Erbium-Doped Fiber Laser Dynamics for Intrusion Zone Identification," (in English), IEEE Sens. J., Article vol. 17, no. 6, pp. 1893-1898, Mar 2017.

[113]    M. K. A. Zaini, Y. S. Lee, K. S. Lim, N. A. M. Nazal, M. H. Zohari, and H. Ahmad, "Axial stress profiling for few-mode fiber Bragg grating based on resonant wavelength shifts during etching process," (in English), J. Opt. Soc. Am. B-Opt. Phys., Article vol. 34, no. 9, pp. 1894-1898, Sep 2017.

[114]    R. Zakaria, W. Kam, Y. S. Ong, S. Yusoff, H. Ahmad, and W. S. Mohammed, "Fabrication and simulation studies on D-shaped optical fiber sensor via surface plasmon resonance," (in English), J. Mod. Opt., Article vol. 64, no. 14, pp. 1443-1449, 2017.

[115]    R. Zakaria, S. Yusoff, K. C. Law, C. S. Lim, and H. Ahmad, "Investigation on the Effects of the Formation of a Silver "Flower-Like Structure" on Graphene," (in English), Nanoscale Res. Lett., Article vol. 12, p. 9, Jan 2017.

[116]    J. Y. Zhang et al., "All-fiber magnetic field sensor based on tapered thin-core fiber and magnetic fluid," (in English), Appl. Optics, Article vol. 56, no. 2, pp. 200-204, Jan 2017.

[117]    P. Zhang et al., "Strain measurement at temperatures up to 800 degrees C using regenerated gratings produced in the high Ge-doped and B/Ge co-doped fibers," (in English), Appl. Optics, Article vol. 56, no. 22, pp. 6073-6078, Aug 2017.

[118]    A. S. Zulkhairi et al., "Switchable multiwavelength ytterbium-doped fiber laser using a non-adiabatic microfiber interferometer," (in English), Laser Phys., Article vol. 27, no. 5, p. 6, May 2017.

[119]    A. Z. Zulkifli et al., "Dual-wavelength fiber laser with a bent single-mode multimode single-mode fiber structure," (in English), J. Optoelectron. Adv. Mater., Article vol. 19, no. 3-4, pp. 127-131, Mar-Apr 2017

[1]    H. Ahmad, S. N. Aidit, N. A. Hassan, M. F. Ismail, and Z. C. Tiu, "Generation of mode-locked erbium-doped fiber laser using MoSe2 as saturable absorber," Optical Engineering, vol. 55, p. 4, Jul 2016.

[2]    H. Ahmad, I. S. Amiri, M. R. K. Soltanian, A. A. Latif, S. F. Norizan, and S. E. Alavi, "Multi dual-wavelength generation using InGaAsP/InP passive microring resonator with two sides apodized gratings," Materials Express, vol. 6, pp. 245-251, Jun 2016.

[3]    H. Ahmad, M. Ghadiry, and A. AbdManaf, "A new approach to study the effect of generation rate on drain-source current of bilayer graphene transistors," Indian Journal of Physics, vol. 90, pp. 1127-1132, Oct 2016.

[4]    H. Ahmad, N. A. Hassan, S. N. Aidit, and Z. C. Tiu, "Generation of tunable multi-wavelength EDFL by using graphene thin film as nonlinear medium and stabilizer," Optics and Laser Technology, vol. 81, pp. 67-69, Jul 2016.

[5]    H. Ahmad, S. N. M. Hassan, F. Ahmad, M. Z. Zulkifli, and S. W. Harun, "Broadband tuning in a passively Q-switched erbium doped fiber laser (EDFL) via multiwall carbon nanotubesipolyvinyl alcohol (MWCNT/PVA) saturable absorber," Optics Communications, vol. 365, pp. 54-60, Apr 2016.

[6]    H. Ahmad, M. A. Ismail, M. Suthaskumar, Z. C. Tiu, S. W. Harun, M. Z. Zulkifli, et al., "S-band Q-switched fiber laser using molybdenum disulfide (MoS2) saturable absorber," Laser Physics Letters, vol. 13, p. 7, Mar 2016.

[7]    H. Ahmad, C. S. J. Lee, M. A. Ismail, Z. A. Ali, S. A. Reduan, N. E. Ruslan, et al., "Tunable Q-switched fiber laser using zinc oxide nanoparticles as a saturable absorber," Applied Optics, vol. 55, pp. 4277-4281, Jun 2016.

[8]    H. Ahmad, C. S. J. Lee, M. A. Ismail, Z. A. Ali, S. A. Reduan, N. E. Ruslan, et al., "Zinc oxide (ZnO) nanoparticles as saturable absorber in passively Q-switched fiber laser," Optics Communications, vol. 381, pp. 72-76, Dec 2016.

[9]    H. Ahmad, M. T. Rahman, S. N. A. Sakeh, M. Z. A. Razak, and M. Z. Zulkifli, "Humidity sensor based on microfiber resonator with reduced graphene oxide," Optik, vol. 127, pp. 3158-3161, 2016.

[10]    H. Ahmad, F. A. A. Rashid, S. R. Azzuhri, M. A. M. Salim, R. A. Shaharuddin, M. A. Ismail, et al., "The generation of passive dual wavelengths Q-switched YDFL by MoSe2 film," Laser Physics Letters, vol. 13, p. 6, Nov 2016.

[11]    H. Ahmad, S. A. Reduan, Z. A. Ali, M. A. Ismail, N. E. Ruslan, C. S. J. Lee, et al., "C-Band Q-Switched Fiber Laser Using Titanium Dioxide (TiO2) As Saturable Absorber," Ieee Photonics Journal, vol. 8, p. 7, Feb 2016.

[12]    H. Ahmad, N. E. Ruslan, Z. A. Ali, S. A. Reduan, C. S. J. Lee, R. A. Shaharuddin, et al., "Ag-nanoparticle as a Q switched device for tunable C-band fiber laser," Optics Communications, vol. 381, pp. 85-90, Dec 2016.

[13]    H. Ahmad, N. E. Ruslan, M. A. Ismail, Z. A. Ali, S. A. Reduan, C. S. J. Lee, et al., "Silver nanoparticle-film based saturable absorber for passively Q-switched erbium-doped fiber laser (EDFL) in ring cavity configuration," Laser Physics, vol. 26, p. 7, Sep 2016.

[14]    H. Ahmad, N. E. Ruslan, M. A. Ismail, S. A. Reduan, C. S. J. Lee, S. Sathiyan, et al., "Passively Q-switched erbium-doped fiber laser at C-band region based on WS2 saturable absorber," Applied Optics, vol. 55, pp. 1001-1005, Feb 2016.

[15]    H. Ahmad, M. A. M. Salim, Z. A. Ali, M. F. Ismail, K. Thambiratnam, A. A. Latif, et al., "Titanium dioxide-based Q-switched dual wavelength in the 1 micron region," Chinese Optics Letters, vol. 14, p. 5, Sep 2016.

[16]    H. Ahmad, M. A. M. Salim, S. R. Azzuhri, and S. W. Harun, "Highly stable and tunable narrow-spacing dual-wavelength ytterbium-doped fiber using a microfiber Mach-Zehnder interferometer," Optical Engineering, vol. 55, p. 5, Feb 2016.

[17]    H. Ahmad, M. A. M. Salim, S. R. Azzuhri, M. F. Jaddoa, and S. W. Harun, "Tunable dual-wavelength ytterbium-doped fiber laser using a strain technique on microfiber Mach-Zehnder interferometer," Applied Optics, vol. 55, pp. 778-782, Feb 2016.

[18]    H. Ahmad, M. A. M. Salim, S. R. Azzuhri, M. R. K. Soltanian, S. W. Harun, and M. Yasin, "Generation of an ultra-stable dual-wavelength ytterbium-doped fiber laser using a photonic crystal fiber," Laser Physics, vol. 26, p. 5, Feb 2016.

[19]    H. Ahmad, M. A. M. Salim, M. F. Ismail, and S. W. Harun, "Q-switched ytterbium-doped fiber laser with zinc oxide based saturable absorber," Laser Physics, vol. 26, p. 7, Nov 2016.

[20]    H. Ahmad, M. A. M. Salim, M. R. K. Soltanian, S. R. Azzuhri, S. W. Harun, and M. Yasin, "Generation of stable and narrow spacing dual-wavelength ytterbium-doped fiber laser using a photonic crystal fiber," Journal of Modern Optics, vol. 63, pp. 968-973, 2016.

[21]    H. Ahmad, M. A. M. Salim, K. Thambiratnam, S. F. Norizan, and S. W. Harun, "A black phosphorus-based tunable Q-switched ytterbium fiber laser," Laser Physics Letters, vol. 13, p. 7, Sep 2016.

[22]    H. Ahmad, M. Z. Samion, A. Muhamad, A. S. Sharbirin, and M. F. Ismail, "Passively Q-switched thulium-doped fiber laser with silver-nanoparticle film as the saturable absorber for operation at 2.0 mu m," Laser Physics Letters, vol. 13, p. 6, Dec 2016.

[23]    H. Ahmad, M. Suthaskumar, Z. C. Tiu, A. Zarei, and S. W. Harun, "Q-switched Erbium-doped fiber laser using MoSe2 as saturable absorber," Optics and Laser Technology, vol. 79, pp. 20-23, May 2016.

[24]    H. Ahmad, Z. C. Tiu, A. Zarei, M. Suthaskumar, M. A. M. Salim, and S. W. Harun, "Domain-wall dark pulse generation in fiber laser incorporating MoS2," Applied Physics B-Lasers and Optics, vol. 122, p. 5, Apr 2016.

[25]    H. Ahmad, A. Z. Zulkifli, M. Yasin, and K. Thambiratnam, "Q-switched dual-wavelength fiber laser using a graphene oxide saturable absorber and singlemode-multimode-singlemode fiber structure," Laser Physics Letters, vol. 13, p. 6, Oct 2016.

[26]    H. Ahmed, M. Ghadiry, and A. Abd Manaf, "A new approach to study carrier generation in graphene nanoribbons under lateral bias," Materials Express, vol. 6, pp. 283-288, Jun 2016.

[27]    M. H. M. Ahmed, A. M. Banabila, A. A. Latiff, N. Irawati, N. M. Ali, S. W. Harun, et al., "Tunable Q-switched erbium doped fiber laser with graphene oxide paper based saturable absorber," Optoelectronics and Advanced Materials-Rapid Communications, vol. 10, pp. 791-796, Nov-Dec 2016.

[28]    M. H. M. Ahmed, A. A. Latiff, H. Arof, H. Ahmad, and S. W. Harun, "Soliton mode-locked erbium-doped fibre laser with mechanically exfoliated molybdenum disulphide saturable absorber," Iet Optoelectronics, vol. 10, pp. 169-173, Oct 2016.

[29]    M. H. M. Ahmed, A. A. Latiff, H. Arof, H. Ahmad, and S. W. Harun, "Femtosecond mode-locked erbium-doped fiber laser based on MoS2-PVA saturable absorber," Optics and Laser Technology, vol. 82, pp. 145-149, Aug 2016.

[30]    M. H. M. Ahmed, A. A. Latiff, H. Arof, and S. W. Harun, "Ultrafast erbium-doped fiber laser mode-locked with a black phosphorus saturable absorber," Laser Physics Letters, vol. 13, p. 7, Sep 2016.

[31]    M. H. M. Ahmed, A. A. Latiff, H. Arof, and S. W. Harun, "Mode-locking pulse generation with MoS2-PVA saturable absorber in both anomalous and ultra-long normal dispersion regimes," Applied Optics, vol. 55, pp. 4247-4252, May 2016.

[32]    S. E. Alavi, I. S. Amiri, M. R. K. Soltanian, R. Penny, A. S. M. Supa'at, and H. Ahmad, "Multiwavelength generation using an add-drop microring resonator integrated with an InGaAsP/InP sampled grating distributed feedback," Chinese Optics Letters, vol. 14, p. 6, Feb 2016.

[33]    S. E. Alavi, M. R. K. Soltanian, I. S. Amiri, M. Khalily, A. S. M. Supa'at, and H. Ahmad, "Towards 5G: A Photonic Based Millimeter Wave Signal Generation for Applying in 5G Access Fronthaul," Scientific Reports, vol. 6, p. 11, Jan 2016.

[34]    A. H. H. Al-Masoodi, M. H. M. Ahmed, A. A. Latiff, H. Arof, and S. W. Harun, "Q-Switched Ytterbium-Doped Fiber Laser Using Black Phosphorus as Saturable Absorber," Chinese Physics Letters, vol. 33, p. 4, May 2016.

[35]    I. S. Amiri, H. Ahmad, M. Ghasemi, M. F. Ismail, S. N. Aidit, M. R. K. Soltanian, et al., "Silicon-based microring resonators for multi-solitons generation for THz communication," Optical and Quantum Electronics, vol. 48, p. 14, Aug 2016.

[36]    I. S. Amiri, S. E. Alavi, M. R. K. Soltanian, R. Penny, A. S. M. Supa'at, N. Fisal, et al., "2 x 2 MIMO-OFDM-RoF generation and transmission of double V-Band signals using a microring resonator system," Optical and Quantum Electronics, vol. 48, p. 15, Jan 2016.

[37]    I. S. Amiri, S. E. Alavi, A. S. M. Supa'at, J. Ali, and H. Ahmad, "THE ANALYSIS OF PHASE, DISPERSION AND GROUP DELAY IN INGAASP/INP MICRORING RESONATOR," Jurnal Teknologi, vol. 78, pp. 43-49, Mar 2016.

[38]    I. S. Amiri, S. E. Alavi, A. S. M. Supa'at, J. Ali, and H. Ahmad, "TEMPORAL SOLITON: GENERATION AND APPLICATIONS IN OPTICAL COMMUNICATIONS," Jurnal Teknologi, vol. 78, pp. 271-276, Mar 2016.

[39]    I. S. Amiri, M. M. Ariannejad, and H. Ahmad, "Tunable multi-wavelength generation using InGaAsP/InP microring resonator with detectable resonance wavelength shift due to a sensing cladding section," Chinese Journal of Physics, vol. 54, pp. 780-787, Oct 2016.

[40]    N. H. M. Apandi, F. Ahmad, S. N. F. Zuikafly, M. H. Ibrahim, and S. W. Harun, "Bismuth (III) Telluride (Bi2Te3) embedded in PVA as a passive saturable absorber in a 2 micron region," Photonics Letters of Poland, vol. 8, pp. 101-103, 2016.

[41]    S. R. Azzuhri, H. Ahmad, M. Portmann, I. Ahmedy, and R. Pathak, "An Efficient Hybrid MANET-DTN Routing Scheme for OLSR," Wireless Personal Communications, vol. 89, pp. 1335-1354, Aug 2016.

[42]    I. M. Babar, M. C. Paul, S. Das, A. Dhar, H. Ahmad, and S. W. Harun, "Mode-locked Thulium Ytterbium co-Doped Fiber Laser with a Graphene Saturable Absorber," Photonics Letters of Poland, vol. 8, pp. 104-106, 2016.

[43]    Y. K. Cheong, W. H. Lim, S. H. Lee, C. H. Pua, W. Y. Chong, and H. Ahmad, "405 nm laser processing of thin SU-8 polymer film," Optik, vol. 127, pp. 1651-1655, 2016.

[44]    W. Y. Chong, W. H. Lim, Y. K. Yap, C. K. Lai, R. M. De La Rue, and H. Ahmad, "Photo-induced reduction of graphene oxide coating on optical waveguide and consequent optical intermodulation," Scientific Reports, vol. 6, p. 8, Apr 2016.

[45]    M. Ghadiry, H. Ahmad, A. Hivechi, F. Tavakoli, and A. Abd Manaf, "Exploiting Edge Effect to Control Generation Rate and Breakdown Voltage in Graphene Nanoribbon Field Effect Transistors," Plasmonics, vol. 11, pp. 573-577, Apr 2016.

[46]    M. Ghadiry, H. Ahmad, C. W. Yi, and A. Abd Manaf, "New device structures for graphene nanoribbon field effect transistors," Materials Express, vol. 6, pp. 265-270, Jun 2016.

[47]    M. Ghadiry, M. Gholami, L. C. Kong, C. W. Yi, H. Ahmad, and Y. Alias, "Nano-Anatase TiO2 for High Performance Optical Humidity Sensing on Chip," Sensors, vol. 16, p. 11, Jan 2016.

[48]    M. Ghadiry, M. Gholami, C. K. Lai, H. Ahmad, and W. Y. Chong, "Ultra-Sensitive Humidity Sensor Based on Optical Properties of Graphene Oxide and Nano-Anatase TiO2," Plos One, vol. 11, p. 14, Apr 2016.

[49]    M. Ghasemi, I. S. Amiri, M. M. Ariannejad, and H. Ahmad, "Semiconducting subwavelength and nonsubwavelength grating microring resonator as a femtosecond time delayer: a comparative analysis," Journal of the Optical Society of America B-Optical Physics, vol. 33, pp. 2073-2081, Oct 2016.

[50]    D. S. Gunawardena, M. H. Lai, K. S. Lim, and H. Ahmad, "Impact of CO2 Laser Pretreatment on the Thermal Endurance of Bragg Gratings," Journal of the Optical Society of Korea, vol. 20, pp. 575-578, Oct 2016.

[51]    D. S. Gunawardena, M. H. Lai, K. S. Lim, A. Malekmohammadi, and H. Ahmad, "Fabrication of thermal enduring FBG sensor based on thermal induced reversible effect," Sensors and Actuators a-Physical, vol. 242, pp. 111-115, May 2016.

[52]    D. S. Gunawardena, K. A. Mat-Sharif, M. H. Lai, K. S. Lim, N. Tamchek, N. Y. M. Omar, et al., "Thermal Activation of Regenerated Grating in Hydrogenated Gallosilicate Fiber," Ieee Sensors Journal, vol. 16, pp. 1659-1664, Mar 2016.

[53]    B. A. Hamida, S. M. Azooz, A. A. Jasim, T. Eltaif, S. Khan, H. Ahmad, et al., "Flat-gain wide-band erbium doped fiber amplifier with hybrid gain medium," Optik, vol. 127, pp. 2481-2484, 2016.

[54]    H. Haris, S. W. Harun, A. R. Muhammad, and H. Arof, "GRAPHENE OXIDE-POLYETHYLENE OXIDE (PEO) FILM AS SATURABLE ABSORBER ON MODE-LOCKED ERBIUM DOPED FIBER LASER GENERATION," Jurnal Teknologi, vol. 78, pp. 13-17, Mar 2016.

[55]    S. W. Harun, H. Shamsudin, H. Ahmad, A. Halder, M. C. Paul, M. Pal, et al., "Development of CW and Pulsed Thulium Ytterbium Co-doped Fiber Lasers Using Nano-engineered Yttria-alimina-silica Based Gain Medium in Conjunction with Cladding Pumping Technique," Current Nanoscience, vol. 12, pp. 299-308, 2016.

[56]    N. Hisamuddin, U. N. Zakaria, M. Z. Zulkifli, A. A. Latiff, H. Ahmad, and S. W. Harun, "Q-Switched Raman Fiber Laser with Molybdenum Disulfide-Based Passive Saturable Absorber," Chinese Physics Letters, vol. 33, p. 4, Jul 2016.

[57]    M. B. Hisyam, A. A. Latiff, M. F. M. Rusdi, Z. Jusoh, M. Yasin, and S. W. Harun, "DUAL-WAVELENGTH Q-SWITCHED FIBER LASER USING MECHANICALLY EXFOLIATED BLACK PHOSPHORUS AS A SATURABLE ABSORBER," Journal of Optoelectronic and Biomedical Materials, vol. 8, pp. 89-95, Jul-Sep 2016.

[58]    M. B. Hisyam, M. F. Rusdi, A. A. Latiff, and S. W. Harun, "PMMA-doped CdSe quantum dots as saturable absorber in a Q-switched all-fiber laser," Chinese Optics Letters, vol. 14, p. 5, Aug 2016.

[59]    M. R. Islam, D. S. Gunawardena, Y. S. Lee, K. S. Lim, H. Z. Yang, and H. Ahmad, "Fabrication and characterization of laser-ablated cladding resonances of two different-diameter photosensitive optical fibers," Sensors and Actuators a-Physical, vol. 243, pp. 111-116, Jun 2016.

[60]    E. I. Ismail, A. Kadir, A. A. Latiff, H. Ahmad, and S. W. Harun, "Q-switched erbium-doped fiber laser operating at 1502 nm with molybdenum disulfide saturable absorber," Journal of Nonlinear Optical Physics & Materials, vol. 25, p. 8, Jun 2016.

[61]    E. I. Ismail, N. A. Kadir, A. A. Latiff, H. Ahmad, and S. W. Harun, "Black phosphorus crystal as a saturable absorber for both a Q-switched and mode-locked erbium-doped fiber laser," Rsc Advances, vol. 6, pp. 72692-72697, 2016.

[62]    M. F. Jaddoa, M. J. Faruki, M. Z. A. Razak, S. R. Azzuhri, and H. Ahmad, "Passively Q-switched fibre laser based on interaction of evanescent field in optical microfibre with graphene-oxide saturable absorber," Ukrainian Journal of Physical Optics, vol. 17, pp. 58-64, 2016.

[63]    M. F. Jaddoa, A. A. Jasim, M. Z. A. Razak, S. W. Harun, and H. Ahmad, "Highly responsive NaCl detector based on inline microfiber Mach-Zehnder interferometer," Sensors and Actuators a-Physical, vol. 237, pp. 56-61, Jan 2016.

[64]    M. F. Jaddoa, M. Z. A. Razak, M. A. M. Salim, A. S. Sharbirin, N. Nayan, M. F. Ismail, et al., "Tunable single wavelength erbium-doped fiber ring laser based on in-line Mach-Zehnder strain," Optik, vol. 127, pp. 8326-8332, 2016.

[65]    M. Khudus, F. De Lucia, C. Corbari, T. Lee, P. Horak, P. Sazio, et al., "Phase matched parametric amplification via four-wave mixing in optical microfibers," Optics Letters, vol. 41, pp. 761-764, Feb 2016.

[66]    M. Khudus, T. Lee, F. De Lucia, C. Corbari, P. Sazio, P. Horak, et al., "All-fiber fourth and fifth harmonic generation from a single source," Optics Express, vol. 24, pp. 21777-21793, Sep 2016.

[67]    M. H. Lai, D. S. Gunawardena, K. S. Lim, V. R. Machavaram, S. H. Lee, W. Y. Chong, et al., "Thermal activation of regenerated fiber Bragg grating in few mode fibers," Optical Fiber Technology, vol. 28, pp. 7-10, Mar 2016.

[68]    M. H. Lai, M. R. Islam, K. S. Lim, S. D. C. Fang, H. Z. Yang, X. G. Qiao, et al., "Nonlinear output response of acousto-optic modulated distributed Bragg reflector (DBR) fiber laser," Optoelectronics and Advanced Materials-Rapid Communications, vol. 10, pp. 611-615, Sep-Oct 2016.

[69]    A. A. Latiff, A. Dhar, S. W. Harun, I. M. Babar, S. Das, M. C. Paul, et al., "Dual-Wavelength Holmium-Doped Fiber Laser Pumped by Thulium-Ytterbium Co-Doped Fiber Laser," Chinese Physics Letters, vol. 33, p. 4, May 2016.

[70]    A. A. Latiff, M. F. M. Rusdi, Z. Jusoh, M. Yasin, H. Ahmad, and S. W. Harun, "1941 nm Q-switched thulium-doped fiber laser with a multi-layer black phosphorus saturable absorber," Optoelectronics and Advanced Materials-Rapid Communications, vol. 10, pp. 801-806, Nov-Dec 2016.

[71]    A. A. Latiff, H. Shamsudin, H. Ahmad, and S. W. Harun, "Q-switched thulium-doped fiber laser operating at 1940 nm region using a pencil-core as saturable absorber," Journal of Modern Optics, vol. 63, pp. 783-787, 2016.

[72]    A. A. Latiff, H. Shamsudin, N. S. A. Aziz, A. M. Hashim, N. Irawati, H. Ahmad, et al., "Mode-locked generation in thulium-doped fiber linear cavity laser," Optik, vol. 127, pp. 11119-11123, 2016.

[73]    A. A. Latiff, H. Shamsudin, Z. C. Tiu, H. Ahmad, and S. W. Harun, "Switchable soliton mode-locked and multi-wavelength operation in thulium-doped all-fiber ring laser," Journal of Nonlinear Optical Physics & Materials, vol. 25, p. 9, Sep 2016.

[74]     K. S. Lim, M. R. Islam, Y. S. Lee, H. Z. Yang, and H. Ahmad, "LP01-LP11 Cross-Mode Interference in a Chirped Grating Inscribed in Two-Mode Fiber," Ieee Journal of Quantum Electronics, vol. 52, p. 6, Jun 2016.

[75]    H. Liu, H. Z. Yang, X. G. Qiao, M. L. Hu, Z. Y. Feng, R. H. Wang, et al., "Strain measurement at high temperature environment based on Fabry-Perot interferometer cascaded fiber regeneration grating," Sensors and Actuators a-Physical, vol. 248, pp. 199-205, Sep 2016.

[76]    M. Q. Lokman, H. R. B. Rahim, S. W. Harun, G. L. Hornyak, and W. S. Mohammed, "Light backscattering (e.g. reflectance) by ZnO nanorods on tips of plastic optical fibres with application for humidity and alcohol vapour sensing," Micro & Nano Letters, vol. 11, pp. 832-836, Dec 2016.

[77]    A. M. Markom, H. Ahmad, and S. W. Harun, "A WIDEBAND AND FLAT-GAIN OF AN AMPLIFIER BY USING ZIRCONIA-BASED ERBIUM-DOPED FIBER (ZR-EDF) FOR SINGLE PASS PPERATION," Jurnal Teknologi, vol. 78, pp. 19-23, Mar 2016.

[78]    A. M. Markom, M. C. Paul, A. Dhar, S. Das, M. Yasin, R. Apsari, et al., "L-band mode-locked fiber laser delivering adjustable bright and dark pulses with erbium zirconia yttria aluminum co-doped fiber," Optoelectronics and Advanced Materials-Rapid Communications, vol. 10, pp. 464-466, Jul-Aug 2016.

[79]    M. H. Mezher, W. Y. Chong, and R. Zakaria, "Third-order optical nonlinearity studies of bilayer Au/Ag metallic films," Laser Physics, vol. 26, p. 5, May 2016.

[80]    M. H. Mezher, W. Y. Chong, and R. Zakaria, "Nonlinear optical response of platinum nanostructures and application for water detection in transformer oil," Rsc Advances, vol. 6, pp. 104624-104631, 2016.

[81]    A. R. Muhammad, S. W. Harun, H. Haris, and H. Arof, "SOLITON MODE-LOCKED GENERATION BASED ON ERBIUM-DOPED FIBER LASER EMBEDDED WITH SINGLE-WALLED CARBON NANOTUBES AS SATURABLE ABSORBER," Jurnal Teknologi, vol. 78, pp. 29-32, Mar 2016.

[82]    S. Nodehi, W. S. Mohammed, H. Ahmad, and S. W. Harun, "Demonstration of a Periodic Passband Filter Based on Coupled Microfiber Knots," Ieee Photonics Technology Letters, vol. 28, pp. 1061-1064, May 2016.

[83]    S. Nodehi, W. S. Mohammed, H. Ahmad, and S. W. Harun, "Fabrication and characterization of high order filter based on resonance in hybrid multi-knots microfiber structure," Optics and Laser Technology, vol. 78, pp. 120-124, Apr 2016.

[84]    S. Nodehi, W. S. Mohammed, H. Ahmad, and S. W. Harun, "Realization of spectral tunable filter based on thermal effect in microfiber structure," Optical Fiber Technology, vol. 28, pp. 38-41, Mar 2016.

[85]    M. C. Paul, A. A. Latiff, M. B. Hisyam, M. F. M. Rusdi, and S. W. Harun, "Generating 2 micron continuous-wave ytterbium-doped fiber laser-based optical parametric effect," Laser Physics Letters, vol. 13, p. 5, Oct 2016.

[86]    H. H. Qazi, A. B. bin Mohammad, H. Ahmad, M. Z. Zulkifli, and S. W. Harun, "Single-mode D-shaped optical fiber sensor for the refractive index monitoring of liquid," Journal of Modern Optics, vol. 63, pp. 750-755, 2016.

[87]    H. H. Qazi, A. B. Mohammad, H. Ahmad, and M. Z. Zulkifli, "D-Shaped Polarization Maintaining Fiber Sensor for Strain and Temperature Monitoring," Sensors, vol. 16, p. 12, Sep 2016.

[88]    H. R. B. Rahim, M. Q. Bin Lokman, S. W. Harun, G. L. Hornyak, K. Sterckx, W. S. Mohammed, et al., "Applied light-side coupling with optimized spiral-patterned zinc oxide nanorod coatings for multiple optical channel alcohol vapor sensing," Journal of Nanophotonics, vol. 10, p. 17, Jul 2016.

[89]    H. R. B. Rahim, S. Manjunath, H. Fallah, S. Thokchom, S. W. Harun, W. S. Mohammed, et al., "Side coupling of multiple optical channels by spiral patterned zinc oxide coatings on large core plastic optical fibers," Micro & Nano Letters, vol. 11, pp. 122-126, Feb 2016.

[90]    F. A. A. Rashid, S. R. Azzuhri, M. A. M. Salim, R. A. Shaharuddin, M. A. Ismail, M. F. Ismail, et al., "Using a black phosphorus saturable absorber to generate dual wavelengths in a Q-switched ytterbium-doped fiber laser," Laser Physics Letters, vol. 13, p. 6, Aug 2016.

[91]    S. N. M. Rifin, M. Z. Zulkifli, S. N. M. Hassan, Y. Munajat, and H. Ahmad, "Broadband supercontinuum generation with femtosecond pulse width in erbium-doped fiber laser (EDFL)," Laser Physics, vol. 26, p. 7, Nov 2016.

[92]    M. F. M. Rusdi, A. A. Latiff, E. Hanafi, M. B. H. Mahyuddin, H. Shamsudin, K. Dimyati, et al., "Molybdenum Disulphide Tape Saturable Absorber for Mode-Locked Double-Clad Ytterbium-Doped All-Fiber Laser Generation," Chinese Physics Letters, vol. 33, p. 4, Nov 2016.

[93]    N. Saidin, D. I. M. Zen, F. Ahmad, H. Haris, H. Ahmad, K. Dimyati, et al., "Q-switched 2 mu m thulium bismuth co-doped fiber laser with multi-walled carbon nanotubes saturable absorber," Optics and Laser Technology, vol. 83, pp. 89-93, Sep 2016.

[94]    Z. S. Salleh, E. I. Ismail, N. A. Kadir, A. A. Latiff, M. Yasin, Z. Jusoh, et al., "MODE-LOCKED ERBIUM-DOPED FIBER LASER WITH TITANIUM DIOXIDE SATURABLE ABSORBER," Digest Journal of Nanomaterials and Biostructures, vol. 11, pp. 1173-1178, Oct-Dec 2016.

[95]    M. Z. Samion, M. F. Ismail, A. Muhamad, A. S. Sharbirin, S. W. Harun, and H. Ahmad, "Tunable passively Q-switched thulium-doped fiber laser operating at 1.9 mu m using arrayed waveguide grating (AWG)," Optics Communications, vol. 380, pp. 195-200, Dec 2016.

[96]    H. Shamsudin, A. A. Latiff, N. N. Razak, H. Ahmad, and S. W. Harun, "Multi-wavelength thulium-doped fiber laser operating at slope efficiency of 16.57% in linear cavity configuration," Optoelectronics and Advanced Materials-Rapid Communications, vol. 10, pp. 129-132, Mar-Apr 2016.

[97]    H. Shamsudin, A. A. Latiff, N. N. Razak, Z. Jusoh, H. Ahmad, and S. W. Harun, "Performance comparison of single-mode single-cladding thulium doped and thulium/holmium co-doped fiber lasers in ring cavity," Journal of Optoelectronics and Advanced Materials, vol. 18, pp. 757-762, Sep-Oct 2016.

[98]    N. M. Sharif, N. M. Yusoff, M. A. M. Izhar, F. Ahmad, S. W. Harun, and H. Ahmad, "GENERATION OF Q-SWITCHED THULIUM-DOPED FIBER LASER (TDFL) USING DIFFERENTSATURABLE ABSORBERS," Jurnal Teknologi, vol. 78, pp. 97-103, 2016.

[99]    M. R. K. Soltanian, A. S. Sharbirin, M. M. Ariannejad, I. S. Amiri, R. M. De La Rue, G. Brambilla, et al., "Variable Waist-Diameter Mach-Zehnder Tapered-Fiber Interferometer as Humidity and Temperature Sensor," Ieee Sensors Journal, vol. 16, pp. 5987-5992, Aug 2016.

[100]    S. Sugavanam, M. Z. Zulkifli, and D. V. Churkin, "Multi-wavelength erbium/Raman gain based random distributed feedback fiber laser," Laser Physics, vol. 26, p. 5, Jan 2016.

[101]    N. A. M. Taib, N. Bidin, H. Haris, N. N. Adnan, M. F. S. Ahmad, and S. W. Harun, "Multi-walled carbon nanotubes saturable absorber in Q-switching flashlamp pumped Nd:YAG laser," Optics and Laser Technology, vol. 79, pp. 193-197, May 2016.

[102]    S. T. Tan, C. H. Tan, W. Y. Chong, C. C. Yap, A. A. Umar, R. T. Ginting, et al., "Microwave-assisted hydrolysis preparation of highly crystalline ZnO nanorod array for room temperature photoluminescence-based CO gas sensor," Sensors and Actuators B-Chemical, vol. 227, pp. 304-312, May 2016.

[103]    Z. C. Tiu, H. Ahmad, A. Zarei, and S. W. Harun, "Generation of multi-wavelength erbium-doped fiber laser by using MoSe2 thin film as nonlinear medium and stabilizer," Chinese Optics Letters, vol. 14, p. 4, Apr 2016.

[104]    Z. C. Tiu, S. N. Aidit, N. A. Hassan, M. F. Bin Ismail, and H. Ahmad, "Single and Double Brillouin Frequency Spacing Multi-Wavelength Brillouin Erbium Fiber Laser With Micro-Air Gap Cavity," Ieee Journal of Quantum Electronics, vol. 52, p. 5, Sep 2016.

[105]    Z. C. Tiu, A. Zarei, H. Ahmad, and S. W. Harun, "Generation of Q-Switched Mode-Locked Erbium-Doped Fiber Laser Operating in Dark Regime," Chinese Physics Letters, vol. 33, p. 4, Mar 2016.

[106]    Z. C. Tiu, A. Zarei, H. Ahmad, and S. W. Harun, "Multi-wavelength mode-locked erbium-doped fiber laser with photonic crystal fiber in figure-of-eight cavity," Optik, vol. 127, pp. 5894-5898, 2016.

[107]    Y. Zahedi, R. Ngah, S. Nunoo, M. Mokayef, S. E. Alavi, and I. S. Amiri, "Experimental measurement and statistical analysis of the RMS delay spread in time-varying ultra-wideband communication channel," Measurement, vol. 89, pp. 179-188, Jul 2016.

[108]    R. Zakaria, M. H. Mezher, and W. Y. Chong, "Investigation of nonlinear optical properties on structures of silver micro-flowers," Applied Physics a-Materials Science & Processing, vol. 122, p. 7, Jul 2016.

[109]    S. N. F. Zuikafly, F. Ahmad, M. H. Ibrahim, A. A. Latiff, and S. W. Harun, "Dual-wavelength passively Q-switched erbium-doped fiber laser with MWCNTs slurry as a saturable absorber," Photonics Letters of Poland, vol. 8, pp. 98-100, 2016.

[110]    A. Z. Zulkifli, A. A. Latiff, M. C. Paul, M. Yasin, H. Ahmad, and S. W. Harun, "Dual-wavelength nano-engineered Thulium-doped fiber laser via bending of singlemode-multimode-singlemode fiber structure," Optical Fiber Technology, vol. 32, pp. 96-101, Dec 2016.

[1]    D. S. Gunawardena, M. H. Lai, K. S. Lim, M. M. Ali, and H. Ahmad, "Measurement of grating visibility of a fiber Bragg grating based on bent-spectral analysis," Applied Optics, vol. 54, pp. 1146-1151, Feb 10 2015.

[2]    D. S. Gunawardena, K. A. Mat-Sharif, N. Tamchek, M. H. Lai, N. Y. M. Omar, S. D. Emami, et al., "Photosensitivity of gallium-doped silica core fiber to 193 nm ArF excimer laser," Applied Optics, vol. 54, pp. 5508-5512, Jun 10 2015.

[3]    M. H. Mezher, A. Nady, R. Penny, W. Y. Chong, and R. Zakaria, "Z-scan studies of the nonlinear optical properties of gold nanoparticles prepared by electron beam deposition," Applied Optics, vol. 54, pp. 9703-9708, Nov 20 2015.

[4]    Y. S. Ong, W. Kam, S. W. Harun, and R. Zakaria, "Fabrication of polymer microfiber through direct drawing and splicing of silica microfiber via vapor spray and flame treatment," Applied Optics, vol. 54, pp. 3863-3867, May 1 2015.

[5]    S. D. Emami, M. R. K. Soltanian, A. Attaran, H. A. Abdul-Rashid, R. Penny, M. Moghavvemi, et al., "Application of Fano resonance effects in optical antennas formed by regular clusters of nanospheres," Applied Physics a-Materials Science & Processing, vol. 118, pp. 139-150, Jan 2015.

[6]    H. Ahmad, K. Z. Hamdan, F. D. Muhammad, S. W. Harun, and M. Z. Zulkifli, "Switchable dual-wavelength CNT-based Q-switched using arrayed waveguide gratings (AWG)," Applied Physics B-Lasers and Optics, vol. 118, pp. 269-274, Feb 2015.

[7]    S. M. Azooz, F. Ahmad, H. Ahmad, S. W. Harun, B. A. Hamida, S. Khan, et al., "Mode-locked 2 mu m fiber laser with a multi-walled carbon nanotube as a saturable absorber," Chinese Optics Letters, vol. 13, Mar 10 2015.

[8]    S. J. Tan, Z. C. Tiu, S. W. Harun, and H. Ahmad, "Sideband-controllable soliton pulse with bismuth-based erbium-doped fiber," Chinese Optics Letters, vol. 13, Nov 10 2015.

[9]    S. M. Azooz, S. W. Harun, H. Ahmad, A. Halder, M. C. Paul, M. Pal, et al., "Mode-Locked Thulium Ytterbium Co-Doped Fiber Laser with Graphene Oxide Paper Saturable Absorber," Chinese Physics Letters, vol. 32, Jan 2015.

[10]    Z. C. Tiu, A. Zarei, S. J. Tan, H. Ahmad, and S. W. Harun, "Harmonic Dark Pulse Emission in Erbium-Doped Fiber Laser," Chinese Physics Letters, vol. 32, Mar 2015.

[11]    M. I. M. A. Khudus, T. Lee, T. Y. Huang, X. G. Shao, P. Shum, and G. Brambilla, "Harmonic Generation Via chi(3) Intermodal Phase Matching in Microfibers," Fiber and Integrated Optics, vol. 34, pp. 53-65, Mar 4 2015.

[12]    H. Ahmad, M. R. K. Soltanian, I. S. Amiri, S. E. Alavi, A. R. Othman, and A. S. M. Supa'at, "Carriers Generated by Mode-Locked Laser to Increase Serviceable Channels in Radio Over Free Space Optical Systems," Ieee Photonics Journal, vol. 7, Oct 2015.

[13]    H. Ahmad, M. R. K. Soltanian, L. Narimani, I. S. Amiri, A. Khodaei, and S. W. Harun, "Tunable S-Band Q-Switched Fiber Laser Using Bi2Se3 as the Saturable Absorber," Ieee Photonics Journal, vol. 7, Jun 2015.

[14]    I. S. Amiri, S. E. Alavi, M. R. K. Soltanian, H. Ahmad, N. Fisal, and A. S. M. Supa'at, "Experimental Measurement of Fiber-Wireless Transmission via Multimode-Locked Solitons From a Ring Laser EDF Cavity," Ieee Photonics Journal, vol. 7, Apr 2015.

[15]    W. Y. Chong, Y. K. Yap, and H. Ahmad, "Low-Threshold Q-Switched Erbium-Doped Fiber Laser Using Molybdenum Disulphide Saturable Absorber Prepared Through Evaporitic Formation," Ieee Photonics Journal, vol. 7, Dec 2015.

[16]    M. H. Lai, K. S. Lim, M. R. Islam, D. S. Gunawardena, H. Z. Yang, and H. Ahmad, "Effect of CO2 Laser Annealing on Stress Applying Parts Contributing Toward Birefringence Modification in Regenerated Grating in Polarization Maintaining Fiber," Ieee Photonics Journal, vol. 7, Oct 2015.

[17]    Y. S. Ong, W. Kam, S. W. Harun, R. Zakaria, and W. S. Mohammed, "Low-Cost Transducer Based On Surface Scattering Using Side-Polished D-Shaped Optical Fibers," Ieee Photonics Journal, vol. 7, Oct 2015.

[18]    M. C. Paul, A. Dhar, S. Das, A. A. Latiff, M. T. Ahmad, and S. W. Harun, "Development of Nanoengineered Thulium-Doped Fiber Laser With Low Threshold Pump Power and Tunable Operating Wavelength," Ieee Photonics Journal, vol. 7, Feb 2015.

[19]    M. C. Paul, A. Dhar, S. Das, M. Pal, S. K. Bhadra, A. M. Markom, et al., "Enhanced Erbium-Zirconia-Yttria-Aluminum Co-Doped Fiber Amplifier," Ieee Photonics Journal, vol. 7, Oct 2015.

[20]    S. Sathiyan, H. Ahmad, W. Y. Chong, S. H. Lee, and S. Sivabalan, "Evolution of the Polarizing Effect of MoS2," Ieee Photonics Journal, vol. 7, Dec 2015.

[21]    M. R. K. Soltanian, I. S. Amiri, W. Y. Chong, S. E. Alavi, and H. Ahmad, "Stable Dual-Wavelength Coherent Source With Tunable Wavelength Spacing Generated By Spectral Slicing a Mode-Locked Laser Using Microring Resonator," Ieee Photonics Journal, vol. 7, Dec 2015.

[22]    M. M. Ali, Y. M. Jung, K. S. Lim, M. R. Islam, S.-U. Alam, D. J. Richardson, et al., "Characterization of Mode Coupling in Few-Mode FBG With Selective Mode Excitation," Ieee Photonics Technology Letters, vol. 27, pp. 1713-1716, Aug 15 2015.

[23]    X. G. Qiao, Y. P. Wang, H. Z. Yang, T. A. Guo, Q. Z. Rong, L. Li, et al., "Ultrahigh-Temperature Chirped Fiber Bragg Grating Through Thermal Activation," Ieee Photonics Technology Letters, vol. 27, pp. 1305-1308, Jun 15 2015.

[24]    Q. Z. Rong, X. G. Qiao, H. Z. Yang, K. S. Lim, and H. Ahmad, "Fiber Bragg Grating Inscription in a Thin-Core Fiber for Displacement Measurement," Ieee Photonics Technology Letters, vol. 27, pp. 1108-1111, May 15 2015.

[25]    H. Z. Yang, X. G. Qiao, Y. P. Wang, M. M. Ali, M. H. Lai, K. S. Lim, et al., "In-Fiber Gratings for Simultaneous Monitoring Temperature and Strain in Ultrahigh Temperature," Ieee Photonics Technology Letters, vol. 27, pp. 58-61, Jan 1 2015.

[26]    M. Z. Ab Razak, S. A. Reduan, A. S. Sharbirin, N. Jamaludin, M. Z. Zulkifli, and H. Ahmad, "Noncontact Optical Displacement Sensor Using an Adiabatic U-Shaped Tapered Fiber," Ieee Sensors Journal, vol. 15, pp. 5388-5392, Oct 2015.

[27]    M. M. Ali, M. R. Islam, K. S. Lim, D. S. Gunawardena, H. Z. Yang, and H. Ahmad, "PCF-Cavity FBG Fabry-Perot Resonator for Simultaneous Measurement of Pressure and Temperature," Ieee Sensors Journal, vol. 15, pp. 6921-6925, Dec 2015.

[28]    M. Batumalay, S. W. Harun, N. Irawati, H. Ahmad, and H. Arof, "A Study of Relative Humidity Fiber-Optic Sensors," Ieee Sensors Journal, vol. 15, pp. 1945-1950, Mar 2015.

[29]    Z. Harith, N. Irawati, H. A. Rafaie, M. Batumalay, S. W. Harun, R. M. Nor, et al., "Tapered Plastic Optical Fiber Coated With Al-Doped ZnO Nanostructures for Detecting Relative Humidity," Ieee Sensors Journal, vol. 15, pp. 845-849, Feb 2015.

[30]    M. R. Islam, M. Bagherifaez, M. M. Ali, H. K. Chai, K. S. Lim, and H. Ahmad, "Tilted Fiber Bragg Grating Sensors for Reinforcement Corrosion Measurement in Marine Concrete Structure," Ieee Transactions on Instrumentation and Measurement, vol. 64, pp. 3510-3516, Dec 2015.

[31]    I. M. Babar, M. B. S. Sabran, S. W. Harun, H. Ahmad, M. C. Paul, A. Halder, et al., "Q-switched thulium-ytterbium co-doped fibre laser using newly developed octagonal shaped inner cladding double-clad active fibre and multi-walled carbon nanotubes passive saturable absorber," Iet Optoelectronics, vol. 9, pp. 131-135, Jun 2015.

[32]    M. R. Islam, M. M. Ali, M. H. Lai, K. S. Lim, D. S. Gunawardena, V. R. Machavaram, et al., "Wide-range in-fibre Fabry-Perot resonator for ultrasonic sensing," Iet Optoelectronics, vol. 9, pp. 136-140, Jun 2015.

[33]    A. Zarei, Z. C. Tiu, F. Ahmad, H. Ahmad, and S. W. Harun, "Q-switched Brillouin fibre laser with multi-wall carbon nanotube saturable absorber," Iet Optoelectronics, vol. 9, pp. 96-100, Apr 2015.

[34]    N. F. Razak, H. Ahmad, M. Z. Zulkifli, F. D. Muhammad, Y. Munajat, and S. W. Harun, "Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter," Indian Journal of Pure & Applied Physics, vol. 53, pp. 579-584, Sep 2015.

[35]    M. Sookhakian, Y. M. Amin, R. Zakaria, W. J. Basirun, M. R. Mahmoudian, B. Nasiri-Tabrizi, et al., "Significantly improved photocurrent response of ZnS-reduced graphene oxide composites," Journal of Alloys and Compounds, vol. 632, pp. 201-207, May 25 2015.

[36]    A. Afroozeh, I. S. Amiri, S. E. Pourmand, A. Zeinalinezhad, S. E. Alavi, and H. Ahmad, "Comparison of Control Light Using Kramers-Kronig Method by Three Waveguides," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 1864-1868, Aug 2015.

[37]    A. Afroozeh, A. Zeinalinezhad, I. S. Amiri, and S. E. Pourmand, "Stop Light Generation Using Nano Ring Resonators for Read Only Memory," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 468-472, Mar 2015.

[38]    S. E. Alavi, I. S. Amiri, H. Ahmad, N. Fisal, and A. S. M. Supa'at, "Optical Amplification of Tweezers and Bright Soliton Using an Interferometer Ring Resonator System," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 624-629, Apr 2015.

[39]    S. E. Alavi, I. S. Amiri, A. S. M. Supa'at, and S. M. Idrus, "Indoor Data Transmission Over Ubiquitous Infrastructure of Power line Cables and LED Lighting," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 599-604, Apr 2015.

[40]    I. S. Amiri, S. E. Alavi, and H. Ahmad, "Radio Frequency Signal Generation and Wireless Transmission Using PANDA and Add/Drop Systems," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 1770-1774, Aug 2015.

[41]    I. S. Amiri, S. E. Alavi, and H. Ahmad, "Analytical Treatment of the Ring Resonator Passive Systems and Bandwidth Characterization Using Directional Coupling Coefficients," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 418-424, Mar 2015.

[42]    I. S. Amiri, S. E. Alavi, M. Bahadoran, A. Afroozeh, and H. Ahmad, "Nanometer Bandwidth Soliton Generation and Experimental Transmission Within Nonlinear Fiber Optics Using an Add-Drop Filter System," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 221-225, Feb 2015.

[43]    I. S. Amiri, S. E. Alavi, M. R. K. Soltanian, A. S. M. Supa'at, N. Fisal, and H. Ahmad, "Generation of Femtosecond Soliton Tweezers Using a Half-Panda System for Modeling the Trapping of a Human Red Blood Cell," Journal of Computational and Theoretical Nanoscience, vol. 12, pp. 10-18, Jan 2015.

[44]    A. A. Jasim, M. Dernaika, S. W. Harun, and H. Ahmad, "A Switchable Figure Eight Erbium-Doped Fiber Laser Based on Inter-Modal Beating By Means of Non-Adiabatic Microfiber," Journal of Lightwave Technology, vol. 33, pp. 528-534, Jan 15 2015.

[45]    M. R. K. Soltanian, I. S. Amiri, S. E. Alavi, and H. Ahmad, "Dual-Wavelength Erbium-Doped Fiber Laser to Generate Terahertz Radiation Using Photonic Crystal Fiber," Journal of Lightwave Technology, vol. 33, pp. 5038-5046, Dec 15 2015.

[46]    H. Ahmad, M. A. M. Salim, M. R. K. Soltanian, S. R. Azzuhri, and S. W. Harun, "Passively dual-wavelength Q-switched ytterbium doped fiber laser using Selenium Bismuth as saturable absorber," Journal of Modern Optics, vol. 62, pp. 1550-1554, 2015.

[47]    M. F. B. Ismail, M. Dernaika, A. Khodaei, S. W. Harun, and H. Ahmad, "Tunable dual-wavelength thulium-doped fiber laser at 1.8 mu m region using spatial-mode beating," Journal of Modern Optics, vol. 62, pp. 892-896, 2015.

[48]    I. M. Babar, M. B. S. Sabran, A. A. Rahman, M. Manaf, H. Ahmad, and S. W. Harun, "Multi-lobed double-clad Erbium-Ytterbium co-doped Q-switched fiber laser based on nonlinear polarisation rotation technique," Journal of Nonlinear Optical Physics & Materials, vol. 24, Mar 2015.

[49]    H. Haris, C. L. Anyi, A. R. Muhammad, R. M. Nor, N. R. Zulkepely, F. Ahmad, et al., "Q-Switched Ytterbium doped fiber laser with graphene oxide embedded in polyethylene oxide film based saturable absorber," Journal of Optoelectronics and Advanced Materials, vol. 17, pp. 539-544, May-Jun 2015.

[50]    J. K. Hmood, K. A. Noordin, H. Ahmad, and S. W. Harun, "Performance improvement of all-optical OFDM systems based on combining RZ coding with m-array QAM," Journal of Optoelectronics and Advanced Materials, vol. 17, pp. 33-38, Jan-Feb 2015.

[51]    A. H. H. Al-Masoodi, F. Ahmad, H. Ahmad, and S. W. Harun, "Q-Switched Yb-Doped Fiber Ring Laser with a Saturable Absorber Based on a Graphene Polyvinyl Alcohol Film," Journal of Russian Laser Research, vol. 36, pp. 389-394, Jul 2015.

[52]    B. A. Hamida, S. M. Azooz, A. A. Jasim, T. Eltaif, H. Ahmad, S. Khan, et al., "Flat-gain wide-band erbium doped fiber amplifier by combining two difference doped fibers," Journal of the European Optical Society-Rapid Publications, vol. 10, 2015.

[53]    H. Ahmad, M. A. M. Salim, S. R. Azzuhri, M. R. K. Soltanian, and S. W. Harun, "A passively Q-switched ytterbium-doped fiber laser based on a few-layer Bi2Se3 saturable absorber," Laser Physics, vol. 25, Jun 2015.

[54]    H. Ahmad, J. M. Semangun, S. R. Azzuhri, M. Z. Zulkifli, N. A. Awang, and S. W. Harun, "Passively mode-locked laser using an entirely centred erbium-doped fiber," Laser Physics, vol. 25, Apr 2015.

[55]    M. R. Shirazi, S. W. Harun, and H. Ahmad, "Effective use of an EDFA and Raman pump residual powers via a Bi-EDF in L-band multi-wavelength fiber laser generation," Laser Physics, vol. 25, Jan 2015.

[56]    M. R. K. Soltanian, I. S. Amiri, S. E. Alavi, and H. Ahmad, "All optical ultra-wideband signal generation and transmission using mode-locked laser incorporated with add-drop microring resonator," Laser Physics Letters, vol. 12, Jun 2015.

[57]    K. S. Lim, D. S. Gunawardena, M. H. Lai, M. R. Islam, H. Z. Yang, X. G. Qiao, et al., "Characterization of phasemask interference visibility and the evolution of grating visibility during grating formation," Measurement, vol. 64, pp. 163-167, Mar 2015.

[58]    A. Lokman, H. Arof, and S. W. Harun, "Dumbbell shaped inline Mach-Zehnder interferometer for glucose detection," Measurement, vol. 59, pp. 167-170, Jan 2015.

[59]    S. Nodehi, W. S. Mohammed, H. Ahmad, and S. W. Harun, "Investigation of thermal effects in a resonance condition of microfibre double-knot resonators as high-order filter," Micro & Nano Letters, vol. 10, pp. 580-582, Oct 2015.

[60]    H. Haris, C. L. Anyi, A. R. Muhammad, F. Ahmad, R. M. Nor, N. R. Zulkepely, et al., "Performance of passively Q-switched ring erbium-doped fiber laser using a multiwalled carbon nanotubes polyethylene oxide (PEO) polymer composite-based saturable absorber," Microwave and Optical Technology Letters, vol. 57, pp. 1897-1901, Aug 2015.

[61]    N. Irawati, S. W. Harun, S. Adwan, M. Alnowami, and H. Ahmad, "Pmma Microfiber Coated with Al-Doped Zno Nanostructures for Detecting Uric Acid," Microwave and Optical Technology Letters, vol. 57, pp. 2455-2457, Oct 2015.

[62]    N. Irawati, M. Suthaskumar, V. John, N. M. Ali, H. Ahmad, and S. W. Harun, "Fabrication of Polymer Microfiber by Direct Drawing," Microwave and Optical Technology Letters, vol. 57, pp. 820-823, Apr 2015.

[63]    R. Z. R. Rosdin, N. M. Ali, H. Arof, and S. W. Harun, "A Passively Harmonically Mode-Locked Soliton Erbium-Doped Fiber Laser with Low Pumping Threshold Using a Single-Walled Carbon Nanotubes," Microwave and Optical Technology Letters, vol. 57, pp. 799-803, Apr 2015.

[64]    M. B. S. Sabran, Z. Jusoh, I. M. Babar, H. Ahmad, and S. W. Harun, "Dual-Wavelength Passively Q-Switched Erbium Ytterbium Codoped Fiber Laser Based on a Nonlinear Polarization Rotation Technique," Microwave and Optical Technology Letters, vol. 57, pp. 530-533, Mar 2015.

[65]    N. Saidin, S. W. Harun, H. Ahmad, S. M. M. Ali, S. S. A. Damanhuri, A. Halder, et al., "Enhancement of Thulium-Ytterbium Doped Fiber Laser Efficiency Using Dual-Pumping Method," Microwave and Optical Technology Letters, vol. 57, pp. 285-287, Feb 2015.

[66]    A. Sulaiman and S. W. Harun, "Observation Violet Emission of Microfiber Knot Resonator," Microwave and Optical Technology Letters, vol. 57, pp. 2929-2931, Dec 2015.

[67]    I. S. Amiri, S. E. Alavi, H. Ahmad, A. S. M. Supa'at, and N. Fisal, "Numerical computation of solitonic pulse generation for terabit/sec data transmission," Optical and Quantum Electronics, vol. 47, pp. 1765-1777, Jul 2015.

[68]    I. S. Amiri, M. R. K. Soltanian, S. E. Alavi, and H. Ahmad, "Multi wavelength mode-lock soliton generation using fiber laser loop coupled to an add-drop ring resonator," Optical and Quantum Electronics, vol. 47, pp. 2455-2464, Aug 2015.

[69]    J. K. Hmood, K. A. Noordin, H. Arof, and S. W. Harun, "Peak-to-average power ratio reduction in all-optical orthogonal frequency division multiplexing system using rotated constellation approach," Optical Fiber Technology, vol. 25, pp. 88-93, Oct 2015.

[70]    R. Zakaria, K. S. Hamdan, S. M. C. Noh, A. Supangat, and M. Sookhakian, "Surface plasmon resonance and photoluminescence studies of Au and Ag micro-flowers," Optical Materials Express, vol. 5, pp. 943-950, May 1 2015.

[71]    M. R. Shirazi, J. M. Taib, R. M. De La Rue, S. W. Harun, and H. Ahmad, "Dynamic characteristics of a multi-wavelength Brillouin-Raman fiber laser assisted by multiple four-wave mixing processes in a ring cavity," Optics and Laser Technology, vol. 66, pp. 63-67, Mar 2015.

[72]    Z. C. Tiu, M. Suthaskumar, A. Zarei, S. J. Tan, H. Ahmad, and S. W. Harun, "Generation of switchable domain wall and Cubic-Quintic nonlinear Schrodinger equation dark pulse," Optics and Laser Technology, vol. 73, pp. 127-129, Oct 2015.

[73]    H. Ahmad and M. Dernaika, "Stabilized single longitudinal mode fibre ring laser based on an inline dual taper Mach Zehnder interferometer filter coated with graphene oxide," Optics Communications, vol. 341, pp. 140-146, Apr 15 2015.

[74]    J. K. Hmood, S. D. Emami, K. A. Noordin, H. Ahmad, S. W. Harun, and H. M. H. Shalaby, "Optical frequency comb generation based on chirping of Mach-Zehnder Modulators," Optics Communications, vol. 344, pp. 139-146, Jun 1 2015.

[75]    O. M. Kharraz, H. Ahmad, A. B. Mohammad, D. I. Forsyth, M. Dernaika, and S. W. Harun, "Performance enhancement of pre-spectrum slicing technique for wavelength conversion," Optics Communications, vol. 350, pp. 154-159, Sep 1 2015.

[76]    S. D. Emami, A. Khodaei, S. Gandan, R. Penny, K. S. Lim, H. A. Abdul-Rashid, et al., "Thulium-doped fiber laser utilizing a photonic crystal fiber-based optical low-pass filter with application in 1.7 mu m and 1.8 mu m band," Optics Express, vol. 23, pp. 19681-19688, Jul 27 2015.

[77]    J. K. Hmood, S. W. Harun, S. D. Emami, A. Khodaei, K. A. Noordin, H. Ahmad, et al., "Performance analysis of an all-optical OFDM system in presence of non-linear phase noise," Optics Express, vol. 23, pp. 3886-3900, Feb 23 2015.

[78]    S. A. Ibrahim, N. A. Rahman, M. H. Abu Bakar, S. H. Girei, M. H. Yaacob, H. Ahmad, et al., "Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers," Optics Express, vol. 23, pp. 2837-2845, Feb 9 2015.

[79]    M. H. Lai, D. S. Gunawardena, K. S. Lim, H. Z. Yang, and H. Ahmad, "Observation of grating regeneration by direct CO2 laser annealing," Optics Express, vol. 23, pp. 452-463, Jan 12 2015.

[80]    M. I. M. A. Khudus, T. Lee, P. Horak, and G. Brambilla, "Effect of intrinsic surface roughness on the efficiency of intermodal phase matching in silica optical nanofibers," Optics Letters, vol. 40, pp. 1318-1321, Apr 1 2015.

[81]    M. H. Lai, K. S. Lim, D. S. Gunawardena, H. Z. Yang, W. Y. Chong, and H. Ahmad, "Thermal stress modification in regenerated fiber Bragg grating via manipulation of glass transition temperature based on CO2-laser annealing," Optics Letters, vol. 40, pp. 748-751, Mar 1 2015.

[82]    S. E. Alavi, I. S. Amiri, S. M. Idrus, A. S. M. Supa'at, and J. Ali, "Cold laser therapy modeling of human cell/tissue by soliton tweezers," Optik, vol. 126, pp. 578-582, 2015.

[83]    S. M. Azooz, M. H. M. Ahmed, F. Ahmad, B. A. Hamida, S. Khan, H. Ahmad, et al., "Passively Q-switched fiber lasers using a multi-walled carbon nanotube polymer composite based saturable absorber," Optik, vol. 126, pp. 2950-2954, 2015.

[84]    N. F. Razak, H. Ahmad, M. Z. Zulkifli, F. D. Muhammad, Y. Munajat, and S. W. Harun, "Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter," Optik, vol. 126, pp. 179-183, 2015.

[85]    Z. C. Tiu, F. Ahmad, S. J. Tan, H. Ahmad, and S. W. Harun, "Multi-wavelength Q-switched Erbium-doped fiber laser with photonic crystal fiber and graphene - Polyethylene oxide saturable absorber," Optik, vol. 126, pp. 1495-1498, 2015.

[86]    M. T. Ahmad, A. A. Latiff, H. Shamsudin, Z. Zakaria, H. Ahmad, and S. W. Harun, "Wavelength-tuneable thulium-doped fiber laser based on fiber Bragg grating stretching," Optoelectronics and Advanced Materials-Rapid Communications, vol. 9, pp. 623-625, May-Jun 2015.

[87]    A. H. H. Al-Masoodi, M. H. M. Ahmed, H. Arof, A. M. Banabila, and S. W. Harun, "Q-switched Ytterbium doped fiber laser using a multi-walled carbon nanotubes embedded in polyethylene oxide film," Optoelectronics and Advanced Materials-Rapid Communications, vol. 9, pp. 1104-1109, Sep-Oct 2015.

[88]    A. M. Markom, N. S. Roslib, A. Hamzah, H. Ahmad, and S. W. Harun, "Q-switched Erbium-doped fiber laser with solid state saturable absorber fiber," Optoelectronics and Advanced Materials-Rapid Communications, vol. 9, pp. 329-331, Mar-Apr 2015.

[89]    N. A. M. Taib, N. Bidin, M. F. S. Ahmad, N. N. Adnan, G. Krishnan, and S. W. Harun, "The effects of temporal delay on the performance of an electro-optic Q-switched Nd:YAG laser," Optoelectronics and Advanced Materials-Rapid Communications, vol. 9, pp. 724-729, May-Jun 2015.

[90]    M. Yasin, S. Soelistiono, Y. G. Y. Yhuwana, M. Khasanah, H. Arof, N. Irawati, et al., "Intensity based optical fiber sensors for calcium detection," Optoelectronics and Advanced Materials-Rapid Communications, vol. 9, pp. 1185-1189, Sep-Oct 2015.

[91]    A. M. Golsheikh, H. N. Lim, R. Zakaria, and N. M. Huang, "Sonochemical synthesis of reduced graphene oxide uniformly decorated with hierarchical ZnS nanospheres and its enhanced photocatalytic activities," Rsc Advances, vol. 5, pp. 12726-12735, 2015.

[92]    I. S. Amiri, S. E. Alavi, M. R. K. Soltanian, N. Fisal, A. S. M. Supa'at, and H. Ahmad, "Increment of Access Points in Integrated System of Wavelength Division Multiplexed Passive Optical Network Radio over Fiber," Scientific Reports, vol. 5, Jul 8 2015.

[93]    M. R. K. Soltanian, H. Ahmad, A. Khodaie, I. S. Amiri, M. F. Ismail, and S. W. Harun, "A Stable Dual-wavelength Thulium-doped Fiber Laser at 1.9 mu m Using Photonic Crystal Fiber," Scientific Reports, vol. 5, Oct 12 2015.

[94]    A. Lokman, H. Arof, and S. W. Harun, "Tapered fiber coated with hydroxyethyl cellulose/polyvinylidene fluoride composite for relative humidity sensor," Sensors and Actuators a-Physical, vol. 225, pp. 128-132, Apr 15 2015.

[95]    A. Lokman, S. W. Harun, Z. Harith, H. A. Rafaie, R. M. Nor, and H. Arof, "Inline Mach-Zehnder interferometer with ZnO nanowires coating for the measurement of uric acid concentrations," Sensors and Actuators a-Physical, vol. 234, pp. 206-211, Oct 1 2015.

[96]    H. Z. Yang, M. M. Ali, M. R. Islam, K. S. Lim, D. S. Gunawardena, and H. Ahmad, "Cladless few mode fiber grating sensor for simultaneous refractive index and temperature measurement," Sensors and Actuators a-Physical, vol. 228, pp. 62-68, Jun 1 2015.

[97]    S. M. Azooz, S. W. Harun, H. Ahmad, A. Halder, M. C. Paul, S. Das, et al., "A Q-switched fibre laser operating in the 2 mu m region based on nonlinear polarization rotation technique," Ukrainian Journal of Physical Optics, vol. 16, pp. 32-37, Mar 2015.