Prof. Hwa-Yaw Tam Profile

Prof. Hwa-Yaw Tam

Chair Professor of Photonics at Hong Kong Polytechnic Univ

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (75)

Proceedings Article | 20 June 2024 Presentation + Paper

OFDR-based navigation system for minimally invasive cochlear implantation

Jingxian Cui, Chern Yang Leong, Linyue Lu, Xin Cheng, Denny Oetomo, Stephen O'Leary, Chao Lu, Hwa-yaw Tam

Proceedings Volume 13001, 130010G (2024) https://doi.org/10.1117/12.3017336

KEYWORDS: Cochlea, Electrodes, Digital signal processing, Calibration, Surgery, Spatial resolution, Signal processing, Navigation systems, Frequency response, Reflectometry

Read Abstract +

Proceedings Article | 28 August 2019 Paper

Characterization of FBGs inscribed in silica/silicone hybrid microstructured optical fibers

Dinusha Gunawardena, Zhengyong Liu, On kit Law, Xiaoxuan Zhong, Bin Zhou, Hwa-Yaw Tam

Proceedings Volume 11199, 111992O (2019) https://doi.org/10.1117/12.2538831

KEYWORDS: Fiber Bragg gratings, Ultraviolet radiation, Structured optical fibers, Silica, Optical fibers, Silicon, Reflection, Thin films, Temperature metrology, Micro optical fluidics

Read Abstract +

Proceedings Article | 28 August 2019 Paper

Omnidirectional vibration sensor based on fiber Bragg gratings in a seven-core fiber

Jingxian Cui, Zhengyong Liu, Dinusha Serandi Gunawardena, Hwa-Yaw Tam

Proceedings Volume 11199, 111992P (2019) https://doi.org/10.1117/12.2538864

KEYWORDS: Active vibration control, Sensors, Fiber Bragg gratings, Fiber optics sensors, Photonics, Fiber optics

Read Abstract +

Proceedings Article | 16 April 2019 Presentation + Paper

Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser

Julien Bonefacino, Tom Glen, Xin Cheng, Steven Boles, Hwa-Yaw Tam

Proceedings Volume 11029, 110290C (2019) https://doi.org/10.1117/12.2520580

KEYWORDS: Ultraviolet radiation, Fiber Bragg gratings, Polymethylmethacrylate, Reflectivity, Humidity, Refractive index, Molecules, Reliability, Polymer optical fibers, Raman spectroscopy

Read Abstract +

Proceedings Article | 14 May 2018 Presentation

Fiber optic sensing networks for predictive maintenance of railway systems (Conference Presentation)

Hwa-Yaw Tam

Proceedings Volume 10654, 106540L (2018) https://doi.org/10.1117/12.2304606

KEYWORDS: Fiber optics sensors, Fiber optic networks, Optical networks, Sensing systems, Sensors, Fiber optics, Optical fibers, Optical tracking, Electromagnetic coupling, Corrosion

Read Abstract +

Proceedings Article | 23 April 2017 Paper

Miniature FBG-based fluidic flowmeter to measure hot oil and water

Zhengyong Liu, Lin Htein, Lun-Kai Cheng, Quincy Martina, Rob Jansen, Hwa-Yaw Tam

Proceedings Volume 10323, 1032336 (2017) https://doi.org/10.1117/12.2264880

KEYWORDS: Temperature metrology, Multimode fibers, Optical fibers, Optical pumping, Fluid dynamics, Head, Sensors, Fiber Bragg gratings, Microfluidics, Water

Read Abstract +

Proceedings Article | 23 April 2017 Paper

Optical fiber end-facet polymer suspended-mirror devices

Mian Yao, Jushuai Wu, A. Ping Zhang, Hwa-Yaw Tam, P. K. A. Wai

Proceedings Volume 10323, 103239I (2017) https://doi.org/10.1117/12.2267632

KEYWORDS: 3D modeling, Scanning electron microscopy, Photoresist materials, Digital micromirror devices, Optical fibers, Polymer optical fibers, Polymers, Fiber optics sensors, Mirrors, Standards development

Read Abstract +

Proceedings Article | 23 April 2017 Paper

Coherent-detection-assisted BOTDA system without averaging using single-sideband modulated local oscillator signal

Nan Guo, Liang Wang, Chao Jin, Tao Gui, Kangping Zhong, Xian Zhou, Jinhui Yuan, Changyuan Yu, Hwa-Yaw Tam, Chao Lu

Proceedings Volume 10323, 103237L (2017) https://doi.org/10.1117/12.2265293

KEYWORDS: Modulation, Digital signal processing, Single sideband modulation, Oscillators, Signal to noise ratio, Signal detection, Polarization, Linear filtering, Signal processing, Receivers

Read Abstract +

Proceedings Article | 30 May 2016 Paper

Hydrostatic pressure sensor based on fiber Bragg grating written in single-ring suspended fiber

Lin Htein, Zhengyong Liu, Hwa-Yaw Tam

Proceedings Volume 9916, 99161R (2016) https://doi.org/10.1117/12.2235842

KEYWORDS: Fiber Bragg gratings, Sensors, Single mode fibers, Mechanical sensors, Optical fibers, Cladding, Structured optical fibers, Micro optical fluidics, Silica, Temperature metrology, Refractive index

Read Abstract +

Proceedings Article | 11 March 2016 Paper

Efficient ytterbium-doped phosphosilicate double-clad leakage-channel-fiber laser at 1008-1020 nm

Guancheng Gu, Zhengyong Liu, Fanting Kong, Hwayaw Tam, Ramesh Shori, Liang Dong

Proceedings Volume 9728, 97282Q (2016) https://doi.org/10.1117/12.2200999

KEYWORDS: Fiber lasers, Quantum efficiency, Ytterbium, Cladding, Fiber Bragg gratings, Diodes, Fiber amplifiers, Laser development, Reflectivity, Silica, Absorption, Laser applications

Read Abstract +

Proceedings Article | 8 October 2015 Paper

Selected cladding mode recoupling based on cascaded LPG and TFBG for satellites vibration environment monitoring

Weisheng Liu, Tuan Guo, Chao Liu, Hwa-yaw Tam

Proceedings Volume 9679, 967909 (2015) https://doi.org/10.1117/12.2197794

KEYWORDS: Cladding, Environmental monitoring, Satellites, Fiber Bragg gratings, Sensors, Environmental sensing, Reflectivity, Sensing systems, Signal generators, Aerospace engineering

Read Abstract +

Proceedings Article | 28 September 2015 Paper

Ultra-thin silver-coated tilted fiber grating for surface and bulk refractive index measurement

Xuhui Qiu, Tuan Guo, Fu Liu, Bai-Ou Guan, Hwa-Yaw Tam, Jacques Albert

Proceedings Volume 9634, 96346G (2015) https://doi.org/10.1117/12.2194721

KEYWORDS: Sensors, Coating, Cladding, Surface plasmons, Polarization, Refractive index, Silver, Absorption, Plasmons, Plasmonics

Read Abstract +

Proceedings Article | 28 September 2015 Paper

Fiber optic anemometer based on metal infiltrated microstructured optical fiber inscribed with Bragg grating

Jie Wang, Shaorui Gao, Zhengyong Liu, A. Ping Zhang, Yonghang Shen, Hwayaw Tam

Proceedings Volume 9634, 96341M (2015) https://doi.org/10.1117/12.2194536

KEYWORDS: Fiber Bragg gratings, Metals, Structured optical fibers, Wind measurement, Fiber optics, Temperature metrology, Micro optical fluidics, Absorption, Integrated optics, Optical fibers

Read Abstract +

Proceedings Article | 1 July 2015 Paper

Design of a high-birefringence two-core photonic crystal fiber for simultaneous measurement of pressure and temperature

Chuang Wu, Zi-Wei Feng, Bai-Ou Guan, Hwa-Yaw Tam

Proceedings Volume 9655, 965528 (2015) https://doi.org/10.1117/12.2182354

KEYWORDS: Temperature metrology, Silica, Photonic crystal fibers, Birefringence, Refractive index, Sensors, Fiber optics sensors, Interferometers, Finite element methods, Optical sensors

Read Abstract +

SPIE Journal Paper | 22 May 2015

Red-shifted solitons for coherent anti-Stokes Raman scattering microspectroscopy in a polarization-maintaining photonic crystal fiber

Jinhui Yuan, Xinzhu Sang, Qiang Wu, Guiyao Zhou, Feng Li, Chongxiu Yu, Kuiru Wang, Binbin Yan, Ying Han, Hwa-Yaw Tam, Ping Kong Wai

OE, Vol. 54, Issue 05, 056107, (May 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.5.056107

KEYWORDS: Solitons, Imaging spectroscopy, Raman spectroscopy, Light sources, Photonic crystal fibers, CARS tomography, Dispersion, Polarization, Data acquisition, Solids

Read Abstract +

Proceedings Article | 2 June 2014 Paper

Microfluidic device integrated with FBG in Co2+-doped fiber to measure flow rate with nL/s sensitivity

Zhengyong Liu, A. Ping Zhang, Hwa-Yaw Tam

Proceedings Volume 9157, 91573I (2014) https://doi.org/10.1117/12.2059244

KEYWORDS: Fiber Bragg gratings, Microfluidics, Capillaries, Sensors, Fiber lasers, Liquids, Temperature metrology, Optical fibers, Absorption, Scanning electron microscopy

Read Abstract +

Proceedings Article | 2 June 2014 Paper

Open cavity Fabry-Pérot interferometric refractometer based on C-shaped fiber

Chuang Wu, Zhengyong Liu, A. Ping Zhang, Bai-Ou Guan, Hwa-Yaw Tam

Proceedings Volume 9157, 91572F (2014) https://doi.org/10.1117/12.2059594

KEYWORDS: Refractive index, Liquids, Water, Sensors, Single mode fibers, Thermal optics, Optical fibers, Interferometry, Interferometers, Scanning electron microscopy

Read Abstract +

Proceedings Article | 2 June 2014 Paper

In-line photonic crystal fiber optofluidic refractometer

Chuang Wu, Ming-Leung Vincent Tse, Zhengyong Liu, A. Ping Zhang, Bai-Ou Guan, Hwa-Yaw Tam

Proceedings Volume 9157, 91578H (2014) https://doi.org/10.1117/12.2059598

KEYWORDS: Microfluidics, Refractive index, Photonic crystal fibers, Sensors, Single mode fibers, Water, Sagnac interferometers, Waveguides, Finite element methods, Optical fibers

Read Abstract +

Proceedings Article | 10 March 2014 Paper

Special optical fiber design to reduce reflection peak distortion of a FBG embedded in inhomogeneous material

Lun-Kai Cheng, Peter Toet, Jan de Vreugd, Remco Nieuwland, Ming-Leung Vincent Tse, Hwayaw Tam

Proceedings Volume 9059, 90590L (2014) https://doi.org/10.1117/12.2052872

KEYWORDS: Fiber Bragg gratings, Distortion, Optical fibers, Optical design, Optical sensing, Electromagnetic coupling, Temperature metrology, Fiber optics sensors, Multiplexing, Composites

Read Abstract +

Proceedings Article | 7 November 2012 Paper

Hydrostatic pressure sensor using two-core photonic crystal fiber

Zhengyong Liu, Ming-Leung Vincent Tse, Daru Chen, Chao Lu, Hwa-Yaw Tam

Proceedings Volume 8421, 842170 (2012) https://doi.org/10.1117/12.970388

KEYWORDS: Sensors, Photonic crystal fibers, Interferometers, Single mode fibers, Fabrication, Refractive index, Capillaries, Birefringence, Solids, Fiber optics sensors

Read Abstract +

Proceedings Article | 7 November 2012 Paper

Fiber optic pH sensor with self-assembled multilayer nanocoatings on tilted FBG

L. Shao, M. Yin, H. Tam, J. Albert

Proceedings Volume 8421, 84216A (2012) https://doi.org/10.1117/12.974898

KEYWORDS: Sensors, Fiber optics sensors, Coating, Nano coatings, Multilayers, Fiber optics, Fiber Bragg gratings, Cladding, Quartz, Crystals

Read Abstract +

Proceedings Article | 18 May 2011 Paper

Linearly chirped and weakly tilted fiber Bragg grating edge filters for in-fiber sensor interrogation

Tuan Guo, Hwa-Yaw Tam, Jacques Albert

Proceedings Volume 7753, 77537V (2011) https://doi.org/10.1117/12.884956

KEYWORDS: Fiber Bragg gratings, Optical filters, Sensors, Cladding, Linear filtering, Coating, Polymers, Refractive index, Temperature metrology, Demodulation

Read Abstract +

Proceedings Article | 17 May 2011 Paper

Side-hole polarization-maintaining photonic crystal fiber for hydrostatic pressure sensing

Chuang Wu, Jie Li, Xinhuan Feng, Bai-Ou Guan, Hwa-Yaw Tam

Proceedings Volume 7753, 77533R (2011) https://doi.org/10.1117/12.883790

KEYWORDS: Birefringence, Polarimetry, Silica, Photonic crystal fibers, Sensors, Photonic crystals, Optical simulations, Photonic crystal devices, Photon polarization, Fiber optics sensors

Read Abstract +

Proceedings Article | 17 May 2011 Paper

Low cost pressure sensor system based on polarization-maintaining photonic crystal fiber operating at 850 nm with CCD interrogator

Lok-hin Cho, H. Fu, Chuang Wu, C. Lu, H. Tam

Proceedings Volume 7753, 77533P (2011) https://doi.org/10.1117/12.884998

KEYWORDS: Sensors, Charge-coupled devices, Photonic crystal fibers, Temperature metrology, Sagnac interferometers, CCD image sensors, Fiber optics sensors, Synthetic aperture radar, CCD cameras, Spectrum analysis

Read Abstract +

Proceedings Article | 17 May 2011 Paper

Ultrasound detection using a tunable low beat-frequency Er3+-doped DBR fiber laser

Tuan Guo, Allan Chi-lun Wong, Weisheng Liu, Baiou Guan, Chao Lu, Hwa-Yaw Tam

Proceedings Volume 7753, 775336 (2011) https://doi.org/10.1117/12.884973

KEYWORDS: Fiber lasers, Ultrasonography, Birefringence, Ultraviolet radiation, Sensors, Multiplexing, Wavelength division multiplexing, Refractive index, Germanium, Fused deposition modeling

Read Abstract +

Proceedings Article | 17 May 2011 Paper

High-sensitivity salinity sensor realized with photonic crystal fiber Sagnac interferometer

Chuang Wu, H. Y. Fu, H. Y. Au, Bai-Ou Guan, H. Y. Tam

Proceedings Volume 7753, 77531B (2011) https://doi.org/10.1117/12.886022

KEYWORDS: Sensors, Sagnac interferometers, Fiber optics sensors, Photonic crystal fibers, Coating, Fiber optics, Head, Sensor performance, Light sources, Synthetic aperture radar

Read Abstract +

Proceedings Article | 16 May 2011 Paper

Polarimetric heterodyning fiber grating laser sensors

Bai-Ou Guan, Yang Zhang, Yan-Nan Tan, Tuan Guo, Hwa-Yaw Tam

Proceedings Volume 8034, 80340G (2011) https://doi.org/10.1117/12.883785

KEYWORDS: Fiber lasers, Sensors, Fiber optics sensors, Polarimetry, Polarization, Acoustics, Heterodyning, Birefringence, Multiplexing, Ultraviolet radiation

Read Abstract +

SPIE Journal Paper | 1 February 2011

All-optical clock recovery based on simultaneous external injection-locking and self-seeding of a Fabry-Perot laser diode

Xiaohui Fang, Ping Kong Wai, Chao Lu, Hwa Yaw Tam, Khurram Qureshi

OE, Vol. 50, Issue 02, 025003, (February 2011) https://doi.org/10.1117/12.10.1117/1.3534793

KEYWORDS: Clocks, Semiconductor lasers, Fabry–Perot interferometers, Switching, Electronic filtering, Optical engineering, Fiber Bragg gratings, Picosecond phenomena, Optical filters, Polarization

Read Abstract +

Proceedings Article | 19 January 2011 Paper

Multiplexed extremely short distributed Bragg reflector fiber laser array for large-scale sensing applications

Allan Wong, W. H. Chung, H. Tam, C. Lu

Proceedings Volume 7986, 79860Y (2011) https://doi.org/10.1117/12.888341

KEYWORDS: Multiplexing, Sensors, Fiber Bragg gratings, Fiber lasers, Reflectors, Distributed Bragg reflectors, Polarization, Absorption, Signal to noise ratio, Semiconductor lasers

Read Abstract +

Proceedings Article | 14 October 2010 Paper

Single-mode optical fibre thermocoupler based on regenerated fibre Bragg gratings evaluated at ~1500 ºC

Mattias Åslund, John Canning, Hongyan Fu, Hwayaw Tam

Proceedings Volume 7839, 78391F (2010) https://doi.org/10.1117/12.867066

KEYWORDS: Fiber Bragg gratings, Temperature metrology, Optical fibers, Silica, Capillaries, Error analysis, Thermography, Reflectivity, Packaging, Calibration

Read Abstract +

Proceedings Article | 14 October 2010 Paper

Super-lattice photonic crystal fibers with high birefringence or large negative dispersion

Daru Chen, Ming-Leung Vincent Tse, H. Y. Tam

Proceedings Volume 7839, 78391B (2010) https://doi.org/10.1117/12.866963

KEYWORDS: Birefringence, Dispersion, Superlattices, Photonic crystal fibers, Cladding, Solids, Distortion, Fiber optic communications, Telecommunications, Fabrication

Read Abstract +

Proceedings Article | 9 September 2010 Paper

Rapid disappearance of regenerated fibre Bragg gratings at temperatures approaching 1500 ºC in boron-codoped germanosilicate optical fibre

Mattias Åslund, John Canning, Hongyan Fu, Hwayaw Tam

Proceedings Volume 7653, 76530Q (2010) https://doi.org/10.1117/12.866423

KEYWORDS: Fiber Bragg gratings, Optical fibers, Temperature metrology, Error analysis, Annealing, Silica, Reflectivity, Calibration, Photonics, Packaging

Read Abstract +

SPIE Journal Paper | 1 July 2010

High-repetition-rate pulse generation using dual-mode self-injection locking in a Fabry-Perot laser diode

Xiaohui Fang, Ping-Kong Wai, Chao Lu, Hwa-Yaw Tam, Xinyong Dong

OE, Vol. 49, Issue 07, 074201, (July 2010) https://doi.org/10.1117/12.10.1117/1.3456597

KEYWORDS: Fiber Bragg gratings, Picosecond phenomena, Modulation, Dispersion, Optical amplifiers, Fabry–Perot interferometers, Semiconductor lasers, Optical engineering, Fiber lasers, Photonics

Read Abstract +

SPIE Journal Paper | 1 July 2010

Investigation of a multiwavelength erbium-doped fiber laser employing a nonlinear high-birefringence fiber loop mirror

Xinhuan Feng, Ping-Kong Wai, Chao Lu, Hwa-Yaw Tam, Jie Li, Bai-Ou Guan

OE, Vol. 49, Issue 07, 074202, (July 2010) https://doi.org/10.1117/12.10.1117/1.3467472

KEYWORDS: Fiber lasers, Linear filtering, Mirrors, Nonlinear optics, Laser resonators, Polarization, Optical engineering, Optical amplifiers, Photonics, Optical filters

Read Abstract +

Proceedings Article | 5 October 2009 Paper

Tilted fiber Bragg grating-based accelerometer

Tuan Guo, Liyang Shao, Hoyin Au, Hwa-yaw Tam, Jacques Albert

Proceedings Volume 7503, 750335 (2009) https://doi.org/10.1117/12.834936

KEYWORDS: Sensors, Cladding, Fiber Bragg gratings, Fiber optics, Polymers, Light sources, Fusion splicing, Head, Optical fibers, Signal detection

Read Abstract +

Proceedings Article | 5 October 2009 Paper

Ultra-short distributed Bragg reflector fiber lasers for sensing applications

Yang Zhang, Bai-Ou Guan, Hwa-Taw Tam

Proceedings Volume 7503, 75032K (2009) https://doi.org/10.1117/12.837618

KEYWORDS: Fiber lasers, Sensors, Signal to noise ratio, Polarization, Distributed Bragg reflectors, Reflectivity, Fiber Bragg gratings, Fiber optics sensors, Photonics, Signal generators

Read Abstract +

Proceedings Article | 5 October 2009 Paper

High temperature resistant fiber Bragg grating lasers for sensing applications

Bai-Ou Guan, Yang Zhang, Hong-Jun Wang, Da Chen, Hwa-Yaw Tam

Proceedings Volume 7503, 75037H (2009) https://doi.org/10.1117/12.834820

KEYWORDS: Fiber lasers, Temperature metrology, Sensors, Fiber Bragg gratings, Fiber optics sensors, Ultraviolet radiation, Annealing, Excimer lasers, Signal to noise ratio, Laser stabilization

Read Abstract +

Proceedings Article | 5 October 2009 Paper

Fiber optic pressure sensor based on polarization-maintaining photonic crystal fiber for downhole application

H. Fu, Chuang Wu, M. L. Tse, Lin Zhang, H. Tam, Bai-Ou Guan, C. Lu, P. K. Wai

Proceedings Volume 7503, 75035V (2009) https://doi.org/10.1117/12.835261

KEYWORDS: Sensors, Fiber optics sensors, Photonic crystal fibers, Temperature metrology, Fiber optics, Environmental sensing, Light sources, Birefringence, Synthetic aperture radar, Sensor performance

Read Abstract +

Proceedings Article | 12 January 2009 Paper

Distributed Bragg reflector fiber lasers for high temperature sensor applications

Bai-Ou Guan, Yang Zhang, Hong-Jun Wang, Da Chen, Hwa-Yaw Tam

Proceedings Volume 7133, 713331 (2009) https://doi.org/10.1117/12.821242

Read Abstract +

Proceedings Article | 11 November 2008 Paper

Chromatic dispersion monitoring of DPSK signals using RF power detection

Jian Zhao, K. K. Qureshi, Zhao hui Li, Chao Lu, H. Y. Tam, P. K. A. Wai

Proceedings Volume 7136, 71361H (2008) https://doi.org/10.1117/12.803312

KEYWORDS: Signal detection, Modulation, Bandpass filters, Phase shift keying, Modulators, Signal generators, Dispersion, Linear filtering, Phase modulation, Optical filters

Read Abstract +

Proceedings Article | 11 November 2008 Paper

Wavelength-spacing-tunable multiwavelength filter and laser using a fiber grating-based distributed F-P interferometer

Xinyong Dong, H.-Y. Tam, C. Lu, P. Shum

Proceedings Volume 7134, 713436 (2008) https://doi.org/10.1117/12.802339

KEYWORDS: Optical filters, Fiber lasers, Reflectors, Interferometers, Reflectivity, Fiber Bragg gratings, Wavelength division multiplexing, Linear filtering, Fabry–Perot interferometry, Fiber amplifiers

Read Abstract +

Proceedings Article | 11 November 2008 Paper

100Gb/s transmission system implementation and optimization

C. Lu, Z. H. Li, Y. F. Yang, L. H. Cheng, W. H. Chung, X. G. Xu, H. Y. Tam, P. K. A. Wai, Q. J. Xiong

Proceedings Volume 7136, 71361Q (2008) https://doi.org/10.1117/12.806454

KEYWORDS: Modulation, Optical amplifiers, Polarization, Multiplexing, Tolerancing, Transmitters, Eye, Clocks, Orthogonal frequency division multiplexing, Receivers

Read Abstract +

Proceedings Article | 11 November 2008 Paper

High-frequency ultrasound measurement using fiber grating laser hydrophone

Li-Yang Shao, Sien-Ting Lau, Xinyong Dong, Yong-Jun Wang, Shun-Yee Liu, Hwa-Yaw Tam, Helen Chan, Chao Lu

Proceedings Volume 7134, 71343U (2008) https://doi.org/10.1117/12.802861

KEYWORDS: Fiber lasers, Ultrasonics, Signal detection, Transducers, Ultrasonography, Polarization, Birefringence, Laser systems engineering, Modulation, Fiber Bragg gratings

Read Abstract +

Proceedings Article | 16 May 2008 Paper

Novel fiber optic polarimetric torsion sensor based on polarization-maintaining photonic crystal fiber

H. Fu, S. Khijwania, H. Au, Xinyong Dong, H. Tam, P. K. Wai, C. Lu

Proceedings Volume 7004, 70042V (2008) https://doi.org/10.1117/12.786021

KEYWORDS: Sensors, Fiber optics sensors, Polarization, Fiber optics, Polarimetry, Photonic crystal fibers, Birefringence, Light sources, Signal detection, Linear polarizers

Read Abstract +

Proceedings Article | 16 May 2008 Paper

FBG sensor interrogation based on RF signal measurement

Xinyong Dong, Li-Yang Shao, H. Fu, H. Tam, C. Lu

Proceedings Volume 7004, 700423 (2008) https://doi.org/10.1117/12.785928

KEYWORDS: Fiber Bragg gratings, Sensors, Modulation, Photodetectors, Light sources, Polonium, Optical fibers, Spectrum analysis, Fiber optics sensors, Optical filters

Read Abstract +

Proceedings Article | 16 May 2008 Paper

Fiber Bragg grating based accelerometer

H. Au, S. Khijwania, H. Tam

Proceedings Volume 7004, 70042S (2008) https://doi.org/10.1117/12.785992

KEYWORDS: Fiber Bragg gratings, Sensors, Computer aided design, Fiber optics sensors, Fiber optics, Electromechanical design, Signal to noise ratio, Optical fibers, Optical design, Vibrometry

Read Abstract +

Proceedings Article | 16 May 2008 Paper

Long-period grating fabricated using resistive filament heating

Li-Yang Shao, Jian Zhao, Xinyong Dong, H. Tam, C. Lu, Sailing He

Proceedings Volume 7004, 70044K (2008) https://doi.org/10.1117/12.786108

KEYWORDS: Signal attenuation, Optical fibers, Single mode fibers, Polarization, Refractive index, Ultraviolet radiation, Tungsten, Light emitting diodes, Fiber optic communications, Fiber lasers

Read Abstract +

Proceedings Article | 26 September 2007 Paper

Novel intensity-modulated temperature-independent FBG sensors

Xinyong Dong, H. Y. Tam, P. Shum

Proceedings Volume 6757, 675702 (2007) https://doi.org/10.1117/12.733850

KEYWORDS: Fiber Bragg gratings, Sensors, Modulation, Light sources, Reflectivity, Temperature metrology, Photodetectors, Fiber optics sensors, Single mode fibers, Optical testing

Read Abstract +

Proceedings Article | 12 April 2005 Paper

Phase shifting calibrated with digital image correlation method

Ming Jiang, H. Tam, Xiao Yuan He

Proceedings Volume 5852, (2005) https://doi.org/10.1117/12.621675

KEYWORDS: Phase shifting, Calibration, 3D metrology, Digital image correlation, Phase shifts, 3D image processing, CCD cameras, Image resolution, Experimental mechanics, Fringe analysis

Read Abstract +

Proceedings Article | 14 February 2005 Paper

Fiber Bragg grating sensors for structural and railway applications

H. Tam, S. Liu, B. Guan, W. Chung, T. Chan, L. Cheng

Proceedings Volume 5634, (2005) https://doi.org/10.1117/12.580803

KEYWORDS: Fiber Bragg gratings, Sensors, Bridges, Fiber optics sensors, Wavelength division multiplexing, Time division multiplexing, Optical fibers, Optical filters, Telecommunications, Temperature metrology

Read Abstract +

Proceedings Article | 17 January 2005 Paper

Study on the photosensitivity of birefringent grating in copolymer optical fiber with high concentration

Hui Ma, Zengchang Li, Hai Ming, Qijin Zhang, HwaYaw Tam, Yongsheng Zhang, Dong Wang, Douguo Zhang, Tao Zhang, Pei Wang, Jianping Xie

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.572264

KEYWORDS: Birefringence, Optical fibers, Polymethylmethacrylate, Polarization, Polarizers, Refractive index, Polymers, Laser beam diagnostics, Single mode fibers, Polymer optical fibers

Read Abstract +

Proceedings Article | 17 January 2005 Paper

Development of Bi2O3-based erbium-doped fibers

Hwa Yaw Tam, Weng Hong Chung, Bai Ou Guan, H. Liu, Ping Kong Wai, Naoki Sugimoto

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.577530

KEYWORDS: Optical fibers, Erbium, Fiber lasers, Tunable lasers, Optical filters, Ions, Optical amplifiers, Microelectromechanical systems, Dense wavelength division multiplexing, Lanthanum

Read Abstract +

Proceedings Article | 17 January 2005 Paper

All-optical packet switching with all-optical header processing using Fabry-Perot laser diodes

Ping Kong Wai, Lixin Xu, Luen Fu Lui, Lai Yin Chan, Chun Yin Li, Hwa Yaw Tam, M. Suleyman Demokan

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.575866

KEYWORDS: Switches, Signal processing, Packet switching, Modulation, Signal generators, Semiconductor lasers, Switching, Fabry–Perot interferometers, Process control, Optical signal processing

Read Abstract +

Proceedings Article | 10 January 2005 Paper

Stitched long-period fiber gratings for gain-flattening of broadband EDFAs

Xue-Wen Chen, A. Ping Zhang, Sailing He, Hwa-Yaw Tam

Proceedings Volume 5623, (2005) https://doi.org/10.1117/12.576799

KEYWORDS: Optical amplifiers, Modulation, Optical design, Cladding, Fabrication, Excimer lasers, Fiber amplifiers, Dense wavelength division multiplexing, Fiber lasers, Calibration

Read Abstract +

Proceedings Article | 9 June 2004 Paper

Fiber grating laser hydrophone

Bai-Ou Guan, Hwa-Yaw Tam, Sien-Ting Lau, Helen Chan

Proceedings Volume 5502, (2004) https://doi.org/10.1117/12.566533

KEYWORDS: Fiber lasers, Acoustics, Ultrasonography, Ultrasonics, Polarization, Sensors, Transducers, Temperature metrology, Ferroelectric polymers, Birefringence

Read Abstract +

SPIE Journal Paper | 1 November 2002

Mechanism of bound soliton pulse formation in a passively mode locked fiber ring laser

Yandong Gong, Ding Tang, Ping Shum, Chao Lu, T. Cheng, Wai Man, Hwa-Yaw Tam

OE, Vol. 41, Issue 11, (November 2002) https://doi.org/10.1117/12.10.1117/1.1511746

KEYWORDS: Solitons, Fiber lasers, Mode locking, Oscilloscopes, Modulation, Pulsed laser operation, Telecommunications, Polarization, Continuous wave operation

Proceedings Article | 23 August 2002 Paper

Compound pulse solitons in a passively mode-locked fiber laser

Bin Zhao, Ding Tang, Deyuan Shen, C. Lu, Wai Man, Hwa-Yaw Tam

Proceedings Volume 4906, (2002) https://doi.org/10.1117/12.480574

KEYWORDS: Solitons, Pulsed laser operation, Fiber lasers, Mode locking, Polarization, Oscilloscopes, Optical solitons, Dispersion, Optical isolators, Laser resonators

Read Abstract +