Multi-event waveform-retrieved distributed optical fiber acoustic sensor using dual-pulse heterodyne phase-sensitive OTDR

2017 ◽  
Vol 42 (3) ◽  
pp. 442 ◽  
Author(s):  
Xiangge He ◽  
Shangran Xie ◽  
Fei Liu ◽  
Shan Cao ◽  
Lijuan Gu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Acoustic Sensor ◽  
Phase Sensitive ◽  
Distributed Optical Fiber

Phase Sensitive Optical Time-Domain Reflective Distributed Optical Fiber Sensing Technology

2021 ◽  
Vol 41 (1) ◽  
pp. 0106004
Author(s):  
张旭苹 Zhang Xuping ◽  
丁哲文 Ding Zhewen ◽  
洪瑞 Hong Rui ◽  
陈晓红 Chen Xiaohong ◽  
梁蕾 Liang Lei ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
Phase Sensitive ◽  
Optical Time ◽  
Distributed Optical Fiber

Optimization of a distributed optical fiber sensor system based on phase sensitive OTDR for disturbance detection

Sensor Review ◽  
2015 ◽  
Vol 35 (4) ◽  
pp. 382-388 ◽  
Author(s):  
Yage Zhan ◽  
Qiao Yu ◽  
Kun Wang ◽  
Fu Yang ◽  
Borui Zhang
Keyword(s):  
Optical Fiber ◽  
Detection System ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Detection Capability ◽  
Content Type ◽  
Distributed Optical Fiber Sensor ◽  
Phase Sensitive ◽  
Distributed Optical Fiber ◽  
Disturbance Detection

Purpose – The purpose of this paper is to theoretically analyze and experimentally demonstrate the investigation on and optimization of a distributed optical fiber sensor based on phase-sensitive optical time domain reflectometer (F-OTDR) for disturbance detection. Design/methodology/approach – The F-OTDR system is investigated and optimized in two aspects: the hardware parameter and the interrogation scheme. Findings – Based on the optimized hardware and the new interrogation scheme, the performances of the F-OTDR system have been improved greatly, compared with conventional F-OTDR system. A location accuracy of 2 m and a signal-to-noise ratio (SNR) of 16 dB have been achieved under a spatial resolution of 8 m. On the other hand, four disturbances at four different locations have been detected and located simultaneously, which is the most effective detection system with the maximum detection capability reported to date, to the best of the authors’ knowledge. Originality/value – Four disturbances at four different locations have been detected and located simultaneously, which is the most effective detection system with the maximum detection capability reported to date, to the best of the authors’ knowledge. With same hardware conditions, more existing disturbances can be detected by using the new interrogation scheme, which is helpful to reduce the miss report of disturbance.

Research Progress of Φ-OTDR Distributed Optical Fiber Acoustic Sensor

2020 ◽  
Vol 57 (13) ◽  
pp. 130005
Author(s):  
马皓钰 Ma Haoyu ◽  
王夏霄 Wang Xiaxiao ◽  
马福 Ma Fu ◽  
于佳 Yu Jia
Keyword(s):  
Optical Fiber ◽  
Research Progress ◽  
Acoustic Sensor ◽  
Distributed Optical Fiber
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