Dr. Wenhai Li Profile

Dr. Wenhai Li

at Univ. of Ottawa

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 2 June 2014 Paper

High-resolution high-sensitivity and truly distributed optical frequency domain reflectometry for structural crack detection

Wenhai Li, Xiaoyi Bao, Liang Chen

Proceedings Volume 9157, 91579T (2014) https://doi.org/10.1117/12.2058532

KEYWORDS: Temperature metrology, Reflectometry, Spatial resolution, Fiber Bragg gratings, Structural health monitoring, Sensors, Polarization maintaining fibers, Backscatter, Technetium, Tantalum

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Proceedings Article | 8 March 2014 Paper

OTDR and OFDR for distributed multi-parameter sensing

Xiaoyi Bao, Wenhai Li, Zengguang Qin, Liang Chen

Proceedings Volume 9062, 906202 (2014) https://doi.org/10.1117/12.2045807

KEYWORDS: Polarization, Spatial resolution, Sensors, Temperature metrology, Signal detection, Sensing systems, Signal to noise ratio, Rayleigh scattering, Time division multiplexing, Data acquisition

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Proceedings Article | 17 October 2012 Paper

High-sensitivity force measurement using optical tapered fiber with optical frequency-domain reflectometry

Xiaozhen Wang, Wenhai Li, Liang Chen, Xiaoyi Bao

Proceedings Volume 8421, 84211F (2012) https://doi.org/10.1117/12.975074

KEYWORDS: Single mode fibers, Spatial resolution, Refractive index, Reflectometry, Sensors, Optical testing, Fiber optics sensors, Signal detection, Cladding, Data acquisition

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Proceedings Article | 17 October 2012 Paper

High-spatial-resolution distributed vibration measurement using time-resolved optical frequency-domain reflectometry

Da-Peng Zhou, Zengguang Qin, Wenhai Li, Liang Chen, Xiaoyi Bao

Proceedings Volume 8421, 842115 (2012) https://doi.org/10.1117/12.974691

KEYWORDS: Spatial resolution, Backscatter, Reflectometry, Vibrometry, Ferroelectric materials, Interferometers, Fourier transforms, Tunable lasers, Polarization, Optical fibers

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Proceedings Article | 20 April 2010 Paper

Pushing the limit of the distributed Brillouin sensors for the sensing length and the spatial resolution

Xiaoyi Bao, Hao Liang, Yongkang Dong, Wenhai Li, Yun Li, Liang Chen

Proceedings Volume 7677, 767702 (2010) https://doi.org/10.1117/12.849018

KEYWORDS: Spatial resolution, Signal to noise ratio, Sensors, Sensing systems, Distortion, Signal attenuation, Optical amplifiers, Polarization, Signal processing, Scattering

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Proceedings Article | 5 October 2009 Paper

Frequency-shifted light storage in a photonics crystal fiber via stimulated Brillouin scattering

Yongkang Dong, Xiaoyi Bao, Wenhai Li, Yun Li

Proceedings Volume 7503, 75032D (2009) https://doi.org/10.1117/12.834917

KEYWORDS: Acoustics, Light scattering, Scattering, Data storage, Photonic crystal fibers, Polarization, Single mode fibers, Optical fibers, Baryon acoustic oscillations, Lithium

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Proceedings Article | 5 October 2009 Paper

Signal-to-noise ratio improvement in Brillouin sensing

Nicolas Linze, Wenhai Li, Xiaoyi Bao

Proceedings Volume 7503, 75036F (2009) https://doi.org/10.1117/12.835133

KEYWORDS: Signal to noise ratio, Spatial resolution, Receivers, Signal attenuation, Data acquisition, Fiber optics, Physics, Fiber optics sensors, Scattering, Temperature metrology

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Proceedings Article | 5 October 2009 Paper

12-km distributed fiber sensor based on differential pulse-width pair BOTDA

Yongkang Dong, Xiaoyi Bao, Wenhai Li

Proceedings Volume 7503, 75032G (2009) https://doi.org/10.1117/12.834919

KEYWORDS: Spatial resolution, Signal to noise ratio, Signal attenuation, Fiber optics sensors, Baryon acoustic oscillations, Lithium, Signal detection, Scattering, Optical fibers

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Proceedings Article | 9 February 2009 Paper

Distributed fiber sensors based on stimulated Brillouin scattering with centimeter spatial resolution

Xiaoyi Bao, Wenhai Li, Yun Li, Liang Chen

Proceedings Volume 7158, 715802 (2009) https://doi.org/10.1117/12.819860

KEYWORDS: Spatial resolution, Signal to noise ratio, Sensors, Phonons, Acoustics, Modulation, Scattering, Signal attenuation, Signal detection, Convolution

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Proceedings Article | 16 May 2008 Paper

Crack detection in reinforced concrete beam by use of distributed Brillouin fiber sensor

Chunshu Zhang, Xiaoyi Bao, Wenhai Li, Liang Chen, Amre Deif, Bruno Cousin, Beatriz Martín-Pérez

Proceedings Volume 7004, 70041T (2008) https://doi.org/10.1117/12.785871

KEYWORDS: Spatial resolution, Fiber optics sensors, Scattering, Sensors, Laser scattering, Optical fibers, Light scattering, Civil engineering, Structured optical fibers, Sensing systems

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Proceedings Article | 16 May 2008 Paper

Effect of temperature on Brillouin gain spectrum and aging behavior in carbon/polyimide coated fiber

Chunshu Zhang, Xiaoyi Bao, Wenhai Li, Liang Chen, Mei Du

Proceedings Volume 7004, 700413 (2008) https://doi.org/10.1117/12.785543

KEYWORDS: Fiber coatings, Temperature metrology, Coating, Scattering, Optical fibers, Carbon, Environmental sensing, Reliability, Light scattering, Acoustics

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Proceedings Article | 16 May 2008 Paper

Using dispersion decreasing fiber to generate pulse delay and compensate the pulse distortion

Xiaoyi Bao, Wenhai Li, Liang Chen

Proceedings Volume 7004, 70043K (2008) https://doi.org/10.1117/12.785470

KEYWORDS: Distortion, Laser beam diagnostics, Slow light, Dispersion, Light scattering, Scattering, Laser scattering, Signal attenuation, Beam shaping, Optical signal processing

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Showing 5 of 12 publications

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