Photonic Sensors, Volume. 7, Issue 2, 157(2017)
Interferometric Distributed Sensing System With Phase Optical Time-Domain Reflectometry
We demonstrate a distributed optical fiber sensing system based on the Michelson interferometer of the phase sensitive optical time domain reflectometer (φ-OTDR) for acoustic measurement. Phase, amplitude, frequency response, and location information can be directly obtained at the same time by using the passive 3×3 coupler demodulation. We also set an experiment and successfully restore the acoustic information. Meanwhile, our system has preliminary realized acoustic-phase sensitivity around 150 dB (re rad/μPa) in the experiment.
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Chen WANG, Ying SHANG, Xiaohui LIU, Chang WANG, Hongzhong WANG, Gangding PENG. Interferometric Distributed Sensing System With Phase Optical Time-Domain Reflectometry[J]. Photonic Sensors, 2017, 7(2): 157
Category: Regular
Received: May. 18, 2016
Accepted: Oct. 16, 2016
Published Online: May. 9, 2017
The Author Email: WANG Chen (jgwangchen@163.com)