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Proceedings Paper

Mitigation of polarization fading in BOTDR sensors by using optical pulses with orthogonal polarizations
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Paper Abstract

Polarization fading is a phenomenon observed often in BOTDR distributed sensors, which greatly reduces signal-to-noise ratio of the detected signal. We proposed a scheme based on injecting optical pulse probes with orthogonal polarization states, which is generated by a delay Mach-Zehnder interferometer (MZI) composed of two polarization beam splitters (PBS). The principle is analyzed and the effect of reducing polarization fading is demonstrated experimentally. The method uses simple and passive components and is suitable for practical applications.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915764 (2 June 2014); doi: 10.1117/12.2059283
Show Author Affiliations
Yulong Cao, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Qing Ye, Shanghai Institute of Optics and Fine Mechanics (China)
Zhengqing Pan, Shanghai Institute of Optics and Fine Mechanics (China)
Haiwen Cai, Shanghai Institute of Optics and Fine Mechanics (China)
Ronghui Qu, Shanghai Institute of Optics and Fine Mechanics (China)
Zujie Fang, Shanghai Institute of Optics and Fine Mechanics (China)
Hao Zhao, Shanghai Bandweaver Technologies Co. Ltd. (China)
Shanghai Synet Optics Corp. (China)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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