Dr. Hoi Lut Ho Profile

Dr. Hoi Lut Ho

at Hong Kong Polytechnic Univ

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 23 April 2017 Paper

High finesse hollow-core fiber resonating cavity for high sensitivity gas sensing application

Yanzhen Tan, Wei Jin, Fan Yang, Hoi Lut Ho

Proceedings Volume 10323, 103230A (2017) https://doi.org/10.1117/12.2265484

KEYWORDS: Fiber optics sensors, Fabry–Perot interferometers, Single mode fibers, Absorption, Mirrors, Gas sensors, Scanning electron microscopy, Signal detection, Resonators, Reflectivity

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Proceedings Article | 23 April 2017 Paper

Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre

Yuechuan Lin, Wei Jin, Fan Yang, Hoi Lut Ho

Proceedings Volume 10323, 1032388 (2017) https://doi.org/10.1117/12.2265498

KEYWORDS: Phase modulation, Signal to noise ratio, Optical filters, Absorption, Ferroelectric materials, Modulation, Phase shift keying, Interferometry, Photodetectors, Gas sensors

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Proceedings Article | 28 September 2015 Paper

Photothermal effect in gas-filled hollow-core photonic bandgap fiber

Fan Yang, Wei Jin, Yingchun Cao, Hoi Lut Ho

Proceedings Volume 9634, 96340W (2015) https://doi.org/10.1117/12.2194819

KEYWORDS: Gas sensors, Absorption, Photothermal effect, Modulation, Fiber optics sensors, Phase modulation, Fiber optics, Interferometry, Phase shift keying, Laser beam diagnostics

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Proceedings Article | 28 September 2015 Paper

All-fiber photoacoustic gas sensor with graphene nano-mechanical resonator as the acoustic detector

Tan Yanzhen, Yang Fan, Ma Jun, Ho Hoi Lut, Jin Wei

Proceedings Volume 9634, 96341K (2015) https://doi.org/10.1117/12.2194447

KEYWORDS: Graphene, Gas sensors, Acoustics, Sensors, Resonators, Photoacoustic spectroscopy, Absorption, Modulation, Signal detection, Signal to noise ratio

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Proceedings Article | 2 June 2014 Paper

Highly birefringent suspended core photonic microcells for sensing applications

Chao Wang, Wei Jin, Wa Jin, Jun Ma, Hoi Lut Ho

Proceedings Volume 9157, 915776 (2014) https://doi.org/10.1117/12.2059320

KEYWORDS: Birefringence, Photonic microstructures, Liquids, Sensors, Refractive index, Photonic crystals, Photodetectors, Interferometers, Temperature metrology, Solids

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Proceedings Article | 2 June 2014 Paper

Hollow-core photonic bandgap fiber gas sensor with high sensitivity and fast response

Fan Yang, Wei Jin, Yingchun Cao, Hoi Lut Ho

Proceedings Volume 9157, 91577R (2014) https://doi.org/10.1117/12.2059157

KEYWORDS: Modulation, Gas sensors, Fusion splicing, Fiber optics sensors, Single mode fibers, Signal to noise ratio, Fourier transforms, Digital signal processing, Spectroscopy, Spatial frequencies

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Proceedings Article | 2 June 2014 Paper

Phase sensitivity of hollow-core photonic bandgap fiber to internal gas pressure

Yingchun Cao, Fan Yang, Hoi Lut Ho, Wei Jin

Proceedings Volume 9157, 91577M (2014) https://doi.org/10.1117/12.2059018

KEYWORDS: Refractive index, Single mode fibers, Photodetectors, Phase measurement, Cladding, Biological research, Fiber optics sensors, Sensors, Fusion splicing, Biosensing

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Proceedings Article | 2 June 2014 Paper

Ferrule-top nano-mechanical resonator with multilayer graphene film

Jun Ma, Wei Jin, Hoi Lut Ho, Chao Wang

Proceedings Volume 9157, 915703 (2014) https://doi.org/10.1117/12.2059011

KEYWORDS: Graphene, Resonators, Optical fibers, Polymethylmethacrylate, Multilayers, Absorption, Single mode fibers, Reflection, Ceramics, Fiber optics sensors

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Proceedings Article | 15 October 2013 Paper

Photonic microcells for novel devices and sensor applications

Chao Wang, Wei Jin, Jun Ma, Wa Jin, Hoi Lut Ho

Proceedings Volume 8924, 892427 (2013) https://doi.org/10.1117/12.2036195

KEYWORDS: Photonic microstructures, Single mode fibers, Femtosecond phenomena, Photonic crystal fibers, Sensors, Fiber optics, Photonic devices, Optical amplifiers, Silica, Fiber amplifiers

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Proceedings Article | 20 May 2013 Paper

Investigation of acoustic sensitivity of hollow-core photonic bandgap fibers

Fan Yang, Wei Jin, Hoi Ho, Fuyin Wang, Wen Liu, Lina Ma, Yongming Hu

Proceedings Volume 8794, 87940V (2013) https://doi.org/10.1117/12.2026593

KEYWORDS: Acoustics, Optical fibers, Cladding, Silica, Single mode fibers, Coating, Polymers, Etching, Photodetectors, Sensors

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Proceedings Article | 7 November 2012 Paper

Numerical modeling and performance optimization of QEPAS spectrophone

Yingchun Cao, Wei Jin, Hoi Lut Ho

Proceedings Volume 8421, 842167 (2012) https://doi.org/10.1117/12.973700

KEYWORDS: Acoustics, Optimization (mathematics), Photoacoustic spectroscopy, Acoustic coupling, Numerical modeling, Finite element methods, Quartz, Atmospheric sensing, Signal detection, Fiber optics sensors

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Proceedings Article | 17 October 2012 Paper

A fiber-tip Fabry-Perot pressure sensor with graphene diaphragm

Jun Ma, Wei Jin, Hoi Lut Ho

Proceedings Volume 8421, 84211C (2012) https://doi.org/10.1117/12.975124

KEYWORDS: Graphene, Sensors, Fiber optics sensors, Reflection, Reflectivity, Fabry–Perot interferometers, Nickel, Interfaces, Microscopes, Capillaries

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Proceedings Article | 9 May 2012 Paper

NIR diode laser-based QEPAS for acetylene detection

Yingchun Cao, Wei Jin, Hoi Lut Ho

Proceedings Volume 8439, 843928 (2012) https://doi.org/10.1117/12.922625

KEYWORDS: Modulation, Signal detection, Absorption, Semiconductor lasers, Near infrared, Photoacoustic spectroscopy, Diodes, Atmospheric sensing, Acoustics, Phase shift keying

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Proceedings Article | 28 April 2010 Paper

In-line devices and sensors based on air-silica microstructure optical fibers

Wei Jin, Long Jin, Shujing Liu, Yeuk Lai Hoo, Jian Ju, Hoi Lut Ho

Proceedings Volume 7682, 768205 (2010) https://doi.org/10.1117/12.849962

KEYWORDS: Micro optical fluidics, Carbon dioxide lasers, Optical fibers, Femtosecond phenomena, Cladding, Polarizers, Sensors, Carbon dioxide, Polarization, Temperature metrology

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Proceedings Article | 5 October 2009 Paper

Fiber optic gas detection system for health monitoring of oil-filled transformer

H. Ho, J. Ju, W. Jin

Proceedings Volume 7503, 75030T (2009) https://doi.org/10.1117/12.834904

KEYWORDS: Gases, Transformers, Sensors, Fiber optics, Methane, Head, Absorption, Modulation, Signal detection, Fiber optics sensors

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Proceedings Article | 23 February 2009 Paper

Optical fiber gas sensor development and application

W. Jin, H. Ho

Proceedings Volume 7278, 727802 (2009) https://doi.org/10.1117/12.821783

KEYWORDS: Absorption, Gases, Gas sensors, Fiber optics sensors, Head, Optical fibers, Sensors, Methane, Fiber optics, Modulation

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Proceedings Article | 11 November 2008 Paper

Glucose optical biosensor with sol-gel-coated long-period gratings

J. Sun, C. C. Chan, Y. F. Zhang, L. T. Zheng, H. L. Ho, X. Y. Dong, L. Y. Shao

Proceedings Volume 7134, 713443 (2008) https://doi.org/10.1117/12.803263

KEYWORDS: Glucose, Sol-gels, Refractive index, Molecules, Sensors, Biosensors, Coating, Cladding, Optical biosensors, Optical fibers

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Proceedings Article | 16 May 2008 Paper

Fabrication and characterization of long period gratings in air-core photonic bandgap fibers

W. Jin, Y. Wang, J. Ju, H. Xuan, H. Ho, L. Xiao, D. Wang

Proceedings Volume 7004, 70042C (2008) https://doi.org/10.1117/12.785957

KEYWORDS: Optical fibers, Cladding, Refractive index, Carbon dioxide lasers, Glasses, Waveguides, Near field, Signal attenuation, Photonic crystal fibers, Sensors

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Proceedings Article | 2 July 2007 Paper

Low-contrast photonic bandgap fibers and their potential applications in liquid-base sensors

Haifeng Xuan, Wei Jin, Jian Ju, Hoi Lut Ho, Min Zhang, Yanbiao Liao

Proceedings Volume 6619, 661936 (2007) https://doi.org/10.1117/12.738642

KEYWORDS: Optical fibers, Refractive index, Liquids, Sensors, Silica, Scanning electron microscopy, Waveguides, Cladding, Photonic crystal fibers, Solids

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Proceedings Article | 14 February 2005 Paper

Development of a wavelength detection system for fiber grating sensors

Wei Jin, Hoi Lut Ho, Yan Biao Liao, Min Zhang, Li Wei Wang, Bao Jin Peng

Proceedings Volume 5634, (2005) https://doi.org/10.1117/12.577308

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Data acquisition, Multiplexing, Data centers, Fiber optics sensors, Absorption, Optical filters, Photography

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Proceedings Article | 20 January 2005 Paper

Sensing with photonic crystal fibers

Wei Jin, Hoi Lut Ho

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.577297

KEYWORDS: Cladding, Photonic crystals, Photonic crystal fibers, Refractive index, Single mode fibers, Sensors, Light wave propagation, Waveguides, Dispersion, Polarization

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Proceedings Article | 16 November 2004 Paper

Noise limit in heterodyne interferometer demodulator for FBG based sensors

Hoi Lut Ho, Chun Zheng Shi, Wei Jin, C. C. Chan, Peter Chan, Y. Zhou, Yanbiao Liao

Proceedings Volume 5579, (2004) https://doi.org/10.1117/12.567649

KEYWORDS: Fiber Bragg gratings, Sensors, Interferometers, Heterodyning, Interference (communication), Signal detection, Fabry–Perot interferometers, Demodulation, Modulators, Ferroelectric materials

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Proceedings Article | 9 June 2004 Paper

Design of single-polarization PCF at 1300- and 1550-nm bands

J. Ju, Wei Jin, Y. L. Hoo, Hoi Ho, M. Suleyman Demokan

Proceedings Volume 5502, (2004) https://doi.org/10.1117/12.566734

KEYWORDS: Polarization, Optical fibers, Finite element methods, Birefringence, Polarizers, Photonic crystal fibers, Optical simulations, Refractive index, Solids, Holmium

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SPIE Journal Paper | 1 November 2003

Cantilever optical vibrometer using fiber Bragg grating

Chunzheng Shi, Nan Zeng, Hoi Ho, Chi Chiu Chan, Ming Zhang, Wei Jin, Yanbiao Liao

OE, Vol. 42, Issue 11, (November 2003) https://doi.org/10.1117/12.10.1117/1.1615584

KEYWORDS: Fiber Bragg gratings, Sensors, Head, Fiber optics sensors, Optical fibers, Multiplexing, Wavelength division multiplexing, Transducers, Interferometers, Modulation

SPIE Journal Paper | 1 January 2002

Evanescent-wave gas sensing using microstructure fiber

Y. L. Hoo, Wei Jin, Hoi Ho, Dongning Wang, Robert Windeler

OE, Vol. 41, Issue 01, (January 2002) https://doi.org/10.1117/12.10.1117/1.1429930

KEYWORDS: Absorption, Single mode fibers, Power meters, Optical fibers, Cladding, Liquids, Structured optical fibers, Tunable lasers, Diffusion, Holmium

Proceedings Article | 30 October 2001 Paper

Fiber Bragg grating sensor for static and dynamic measurands

Hoi Ho, Wei Jin, Chi Chan, Y. Zhou, X. Wang

Proceedings Volume 4596, (2001) https://doi.org/10.1117/12.447333

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Photodetectors, Signal processing, Optical filters, Spectroscopy, Fourier transforms, Tunable filters, Light sources

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Proceedings Article | 9 November 2000 Paper

Sensitive, multi-point gas detection using FMCW and WMS

H. Ho

Proceedings Volume 4185, 418528 (2000) https://doi.org/10.1117/12.2302223

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Proceedings Article | 3 October 2000 Paper

Remote multipoint fiber optic gas sensors using a FMCW technique and a tunable laser

Hongbo Yu, Hoi Ho, Wei Jin, Yanbiao Liao, Yanhe Li

Proceedings Volume 4220, (2000) https://doi.org/10.1117/12.401729

KEYWORDS: Sensors, Gas sensors, Modulation, Fiber optics sensors, Absorption, Tunable lasers, Interferometry, Linear filtering, Time division multiplexing, Fiber optics

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Proceedings Article | 9 May 2000 Paper

Time-division-multiplexed gas sensing system with a forward-coupled ladder topology

Hoi Ho, Wei Jin, M. Suleyman Demokan

Proceedings Volume 4077, (2000) https://doi.org/10.1117/12.385547

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Proceedings Article | 8 December 1999 Paper

Quantitative measurement of acetylene by using external-cavity tunable diode laser

Hoi Ho, Wei Jin, M. Suleyman Demokan

Proceedings Volume 3852, (1999) https://doi.org/10.1117/12.372834

KEYWORDS: Sensors, Signal detection, Modulation, Tunable lasers, Gas sensors, Photodetectors, Multiplexing, Absorption, Tunable diode lasers, Optical switching

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Proceedings Article | 21 July 1998 Paper

Effect of interferometric noise in fiber Bragg grating sensors using tunable laser sources

Wei Jin, Hoi Ho, Chi Chan, Keith Chan

Proceedings Volume 3330, (1998) https://doi.org/10.1117/12.316983

KEYWORDS: Sensors, Fiber Bragg gratings, Interferometry, Modulation, Reflectivity, Fiber optics sensors, Signal detection, Tunable lasers, Photodetectors, Tunable filters

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