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Proceedings Paper

Phase-sensitive optical time-domain reflectometry with heterodyne demodulation
Author(s): Xiangge He; Fei Liu; Mengzhe Qin; Shan Cao; Lijuan Gu; Xiaoping Zheng; Min Zhang
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Paper Abstract

A phase-sensitive optical time-domain reflectometry (Φ-OTDR) system using dual heterodyne pulses combined with heterodyne demodulation is proposed. The theory of this system is analyzed. The experimental results show that this system can achieve a very large dynamic range with a frequency range of 50 Hz to 25 kHz and an amplitude range of 0.9 rad to 73 rad. At the same time, multi vibrations at different locations can also be well detected.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235Q (23 April 2017); doi: 10.1117/12.2262071
Show Author Affiliations
Xiangge He, Tsinghua Univ. (China)
Fei Liu, Tsinghua Univ. (China)
Mengzhe Qin, Tsinghua Univ. (China)
Shan Cao, Tsinghua Univ. (China)
Lijuan Gu, Peking Univ. (China)
Xiaoping Zheng, Tsinghua Univ. (China)
Min Zhang, Peking Univ. (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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