Progress in Optical Fiber Interferometer Based Distributed Vibration Sensing Technology

2013 ◽  
Vol 50 (2) ◽  
pp. 020004 ◽  
Author(s):  
王贺 Wang He ◽  
孙琪真 Sun Qizhen ◽  
李晓磊 Li Xiaolei ◽  
刘德明 Liu Deming
Keyword(s):  
Optical Fiber ◽  
Sensing Technology ◽  
Vibration Sensing

Foresight on Real-Time Monitoring System for Submarine Optical Fiber Cables Based on Fiber Sensing Technology

2013 ◽  
Vol 341-342 ◽  
pp. 1089-1093 ◽  
Author(s):  
Xue Man Fan ◽  
Ying Jian Wang ◽  
Gui Li Wang ◽  
Chang Shu ◽  
Chun Guang Li
Keyword(s):  
Optical Fiber ◽  
Real Time ◽  
Fault Location ◽  
Real Time Monitoring ◽  
Fiber Sensing ◽  
Sensing System ◽  
Sensing Technology ◽  
Vibration Sensing ◽  
Main Factors ◽  
Optimization Schemes

In this paper, the main factors influencing the reliability of submarine optical fiber cables (SOFC) are analyzed, and the significance of the research on real-time monitoring technology of SOFC is illuminated. Also, the principle of distributed double Mach-Zehnder (M-Z) interference vibration sensing system is discussed. Then, the feasibility of the system applied in pre-warning and fault location of SOFC is verified. In view of the main problems of the optical fiber vibration sensing system, two optimization schemes are presented in this paper to improve the performance of the system.

scholarly journals Judge the Extent of the Harm on Electric Cables Based on Optical Fiber Sensing Technology and Found a New Mechanism of Patrolling Electric Cables

2020 ◽  
Vol 185 ◽  
pp. 01071
Author(s):  
Xianjin Yang ◽  
Jingqing Ye ◽  
Guangyuan Yao ◽  
Junfeng Chi ◽  
Jiali Du
Keyword(s):  
Optical Fiber ◽  
Fiber Optic ◽  
Power Grids ◽  
Efficient Mechanism ◽  
Buried Cables ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Vibration Sensing ◽  
Optical Fiber Sensing ◽  
Electric Cables

The article comes up with a measure that uses fiber vibration sensing technology to avoid external intrusion harm on electric cables, dealing with the problem that buried cables are sometimes destroyed by constructions. This measure is based on dual Mach-Zehnder(M-Z) interference, and it makes use of power grids’ fiber-optic cables laid in the cable trench—along with the electric cables—as sensors. These sensors could monitor vibration near to optical cables and trench, and recognize the events that vibrate the cable, and finally judge the extent of the harm caused by the events. The article also try to find out a more reliable and more efficient mechanism of patrolling electric cables, which is based on the abovementioned measure.

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