Interferometric Distributed Sensing System With Phase Optical Time-Domain Reflectometry

被引：13
|
作者：
Wang, Chen [1 ]
Shang, Ying [1 ]
Liu, Xiaohui [1 ]
Wang, Chang [1 ]
Wang, Hongzhong [2 ]
Peng, Gangding [3 ]
机构：
[1] Shandong Acad Sci, Laser Inst, Shandong Prov Key Lab Opt Fiber Sensing Tec, Jinan 250014, Peoples R China
[2] Shengli Oilfield Xinsheng Geophys Technol Co Ltd, Dongying 257086, Peoples R China
[3] Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
来源：
PHOTONIC SENSORS | 2017年 / 7卷 / 02期
关键词：
Fiber optics sensors; Rayleigh scattering; optical time domain reflectometry; interferometry; INTRUSION SENSOR SYSTEM; ZEHNDER INTERFEROMETER; SAGNAC INTERFEROMETER;
D O I：
10.1007/s13320-016-0350-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We demonstrate a distributed optical fiber sensing system based on the Michelson interferometer of the phase sensitive optical time domain reflectometer (phi-OTDR) for acoustic measurement. Phase, amplitude, frequency response, and location information can be directly obtained at the same time by using the passive 3x3 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/mu Pa) in the experiment.
引用
收藏
页码：157 / 162
页数：6
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