Dr. Yongqian Li Profile

Dr. Yongqian Li

Professor at North China Electric Power Univ

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Author

Publications (15)

SPIE Journal Paper | 14 March 2024

Rayleigh and Brillouin self-heterodyne detection Brillouin optical time domain reflectometer system based on phase shift keying pulse encoding

Lei Wang, Yongqian Li, Haijun Fan

OE, Vol. 63, Issue 03, 036106, (March 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.3.036106

KEYWORDS: Phase shift keying, Pulse signals, Rayleigh scattering, Sensing systems, Light scattering, Signal to noise ratio, Computer programming, Temperature metrology, Modulation, Signal detection

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SPIE Journal Paper | 3 March 2020

Performance enhancement for a self-heterodyne detection Brillouin optical time-domain reflectometer

Jianjian Wang, Yongqian Li, Lixin Zhang

OE, Vol. 59, Issue 03, 034103, (March 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.3.034103

KEYWORDS: Signal to noise ratio, Signal detection, Modulation, Temperature metrology, Light scattering, Lithium, Scattering, Phase modulation, Reflectometry, Laser scattering

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Proceedings Article | 10 May 2019 Paper

Advances in research on optical transmission properties and sensing of magnetic fluids

Hao Zhang, Yongqian Li, Baoyi Yuan, Fangyuan Cheng, Ze Yuan

Proceedings Volume 11068, 110682M (2019) https://doi.org/10.1117/12.2524753

KEYWORDS: Magnetism, Transmittance, Particles, Magnetic sensors, Microfluidics, Monte Carlo methods, Sensors, Optical sensing, Liquids, Temperature metrology

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SPIE Journal Paper | 30 May 2018 Open Access

Rayleigh Brillouin optical time-domain analysis system using heterodyne detection and wavelength scanning

Yongqian Li, Lixin Zhang, Hanbai Fan, Hong Li

OE, Vol. 57, Issue 05, 056112, (May 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.5.056112

KEYWORDS: Heterodyning, Signal to noise ratio, Sensing systems, Polarization, Geometrical optics, Signal detection, Optical scanning systems, Interference (communication), Temperature metrology, Lithium

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SPIE Journal Paper | 31 July 2017

Characterization of vector stimulated Brillouin scattering gain over wide power range

Yongqian Li, Qi An, Xiaojuan Li, Lixin Zhang

OE, Vol. 56, Issue 07, 076116, (July 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.7.076116

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SPIE Journal Paper | 8 May 2017 Open Access

High-accuracy Brillouin frequency shift measurement system based on stimulated Brillouin scattering phase shift

Yongqian Li, Qi An, Xiaojuan Li, Lixin Zhang

OE, Vol. 56, Issue 05, 056102, (May 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.5.056102

KEYWORDS: Scattering, Temperature metrology, Phase shifts, Temperature sensors, Double sideband modulation, Phase shift keying, Mathematical modeling, Single mode fibers, Phase measurement, Sensing systems

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Proceedings Article | 27 February 2014 Paper

Research on strain and temperature measurement of OPGW based on BOTDR

Anqiang Lv, Yongqian Li, Jing Li

Proceedings Volume 9044, 90441H (2014) https://doi.org/10.1117/12.2038003

KEYWORDS: Temperature metrology, Optical fibers, Calibration, Transformers, Composites, Raman scattering, Rayleigh scattering, Scattering, Light scattering, Reflectometry

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Proceedings Article | 9 November 2010 Paper

An FPGA-based demodulation system for fiber Bragg grating sensing

Yongqian Li, Haitao He, Guozhen Yao

Proceedings Volume 7853, 78532F (2010) https://doi.org/10.1117/12.869810

KEYWORDS: Fiber Bragg gratings, Demodulation, Sensors, Electronic filtering, Tunable filters, Optical filters, Field programmable gate arrays, Data acquisition, Sensing systems, Data transmission

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Proceedings Article | 12 March 2008 Paper

Performance analysis of Brillouin optical time domain reflectometer using Golay complementary sequence

Xiao-wei Cheng, Yong-qian Li

Proceedings Volume 6624, 66240P (2008) https://doi.org/10.1117/12.791086

KEYWORDS: Signal detection, Signal to noise ratio, Spatial resolution, Scattering, Signal attenuation, Reflectometry, Berkelium, Laser scattering, Interference (communication), Sensing systems

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Proceedings Article | 9 December 2005 Paper

Spontaneous Brillouin distributed optical fiber temperature sensing system

Yujun He, Chengqun Yin, Dong Cao, Yongqian Li

Proceedings Volume 6021, 602148 (2005) https://doi.org/10.1117/12.633268

KEYWORDS: Scattering, Sensing systems, Raman scattering, Light scattering, Rayleigh scattering, Optical fibers, Temperature metrology, Backscatter, Interferometers, Mach-Zehnder interferometers

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Proceedings Article | 14 February 2005 Paper

Spontaneous Brillouin-distributed optical fiber temperature sensing system based on all-fiber Mach-Zehnder interferometer

Yujun He, Youchan Zhu, Chengqun Yin, Yongqian Li

Proceedings Volume 5634, (2005) https://doi.org/10.1117/12.569785

KEYWORDS: Mach-Zehnder interferometers, Rayleigh scattering, Sensing systems, Scattering, Light scattering, Optical fibers, Signal detection, Temperature metrology, Optical amplifiers, Interferometers

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Proceedings Article | 14 February 2005 Paper

Advances in Brillouin-based distributed optical fiber temperature sensing

Yongqian Li, Fucai Zhang, Yujun He, Zhi Yang, Toshihiko Yoshino

Proceedings Volume 5634, (2005) https://doi.org/10.1117/12.575896

KEYWORDS: Temperature metrology, Sensing systems, Optical fibers, Optical amplifiers, Rayleigh scattering, Optical sensing, Mach-Zehnder interferometers, Fiber amplifiers, Ferroelectric materials, Scattering

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Proceedings Article | 9 September 2002 Paper

Spontaneous Brillouin scattering measurement in optical fiber utilizing all-fiber Mach-Zehnder interferometer

Yujun He, Yongqian Li, Zhi Yang, Chengqun Yin, Toshihiko Yoshino

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.481971

KEYWORDS: Mach-Zehnder interferometers, Rayleigh scattering, Scattering, Interferometers, Light scattering, Optical filters, Scatter measurement, Optical fibers, Sensing systems, Backscatter

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Proceedings Article | 9 September 2002 Paper

Experimental studies on a distributed temperature sensing system based on optical fiber Brillouin scattering

Zhi Yang, Yongqian Li, Yujun He, Xiang Cui, Toshihiko Yoshino

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.481992

KEYWORDS: Rayleigh scattering, Scattering, Optical fibers, Light scattering, Sensing systems, Mach-Zehnder interferometers, Interferometers, Temperature metrology, Backscatter, Optical amplifiers

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Proceedings Article | 9 September 2002 Paper

Wide-range temperature dependence of spontaneous Brillouin intensity in a dispersion-shifted fiber

Yongqian Li, Fucai Zhang, Toshihiko Yoshino

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.481991

KEYWORDS: Temperature metrology, Fiber coatings, Signal attenuation, Spatial resolution, Sensing systems, Sensors, Rayleigh scattering, Optical amplifiers, Interferometers, Fiber amplifiers

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Showing 5 of 15 publications

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