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Proceedings Paper

Research on coherent Rayleigh backscattering and signal processing method in phase-OTDR
Author(s): Xueyi Chen; Xiaolei Zhang; Bing Yan; Jun Li; Xuejun Chen; Guojie Tu; Yunxian Liang; Zhibo Ni; Brian Culshaw; Fengzhong Dong
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Paper Abstract

There have been a number of papers focusing on fiber distributed sensing with coherent Rayleigh backscattering published. However, up to now, very limited research articles on investigation of coherent Rayleigh backscattering signal waveform and its physical mechanism have been reported. This paper first proposes a theoretical derivation to illustrate coherent Rayleigh backscattering waveform. The theoretical model is then proved with numerical simulation and experimental measurement. In addition, signal processing method is an important factor on the performance of a phasesensitive OTDR system. An improvement of signal processing method, which is consisted of digital average, moving average and interval subtraction, with good effect on locating external perturbation is also introduced.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421A3 (7 November 2012); doi: 10.1117/12.975203
Show Author Affiliations
Xueyi Chen, Anhui Institute of Optics and Fine Mechanics (China)
Xiaolei Zhang, Anhui Institute of Optics and Fine Mechanics (China)
Bing Yan, Anhui Institute of Optics and Fine Mechanics (China)
Jun Li, Heriot-Watt Univ. (United Kingdom)
Xuejun Chen, Anhui Institute of Optics and Fine Mechanics (China)
Guojie Tu, Anhui Institute of Optics and Fine Mechanics (China)
Yunxian Liang, Anhui Institute of Optics and Fine Mechanics (China)
Zhibo Ni, Anhui Institute of Optics and Fine Mechanics (China)
Brian Culshaw, Univ. of Strathclyde (United Kingdom)
Fengzhong Dong, Anhui Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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