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Proceedings Paper

Pulse compression phase sensitive optical time domain reflectometer with sub-meter resolution
Author(s): Bin Lu; Zhaoyong Wang; Hanrong Zheng; Qing Ye; Ronghui Qu; Howell Zhao; Haiwen Cai
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Paper Abstract

We propose and experimentally demonstrate a pulse compression phase sensitive optical time domain reflectometer (φ- OTDR) with sub-meter resolution. Principle and theoretical analysis on the spatial resolution, the feasibility to obtain the phase information are provided. This technique can break the tradeoff between spatial resolution and measurement range in the traditional φ-OTDR. As example, our verifying experiment achieves 30cm spatial resolution and 20km measurement range, and the signal to noise ratio (SNR) reaches 10dB. To our knowledge, this is the first time that such a high spatial resolution over such a long sensing range is reported in φ-OTDR-based distributed vibration sensing.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230O (23 April 2017); doi: 10.1117/12.2264980
Show Author Affiliations
Bin Lu, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Zhaoyong Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Hanrong Zheng, 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)
Ronghui Qu, Shanghai Institute of Optics and Fine Mechanics (China)
Howell Zhao, Shanghai Bandweaver Communication Technologies Co., Ltd. (China)
Haiwen Cai, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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