Optimum design of 30-km long-distance distributed optical fiber Raman temperature sensor system

2005 ◽  
Author(s):  
Zaixuan Zhang ◽  
Honglin Liu ◽  
Jianfeng Wang ◽  
Xiangdong Yu ◽  
Yongxing Jin ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optimum Design ◽  
Temperature Sensor ◽  
Sensor System ◽  
Long Distance ◽  
Distributed Optical Fiber

Spatial Resolution Improvement of Distributed Optical Fiber Raman Temperature Sensor System by Using Amplitude Modification Algorithm

2013 ◽  
Vol 552 ◽  
pp. 393-397
Author(s):  
Zhong Xie Jin ◽  
Hai Peng Zhu
Keyword(s):  
Optical Fiber ◽  
Spatial Resolution ◽  
Temperature Sensor ◽  
High Spatial Resolution ◽  
Sensor System ◽  
Fiber Axis ◽  
Temperature Changes ◽  
Amplitude Coefficient ◽  
Resolution Improvement ◽  
Distributed Optical Fiber

Spatial resolution is an important parameter in distributed optical fiber Raman temperature sensor system (DOFRTS). In this paper, a 10 kilometers long DOFRTS with spatial resolution of about 6 meters is constructed. The spatial resolution is limited by electrical bandwidth of the photodetector circuit and the data acquisition part. The abrupt temperature changes along the fiber axis are treated as temporal pulse signals, and a linear amplitude coefficient modification algorithm is used to improve the spatial resolution. The experimental results show that the temperature amplitudes from 3 meters region to 6 meters can be modified accurately. Therefore, a DOFRTS of high spatial resolution but low system cost could be successfully constructed.

High-power EDFA applied in distributed optical fiber Raman temperature sensor system

2009 ◽  
Vol 2 (2) ◽  
pp. 210-214
Author(s):  
Xu Zhang ◽  
Deming Liu ◽  
Hairong Liu ◽  
Qizhen Sun ◽  
Zhifeng Sun ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Power ◽  
Temperature Sensor ◽  
Sensor System ◽  
Distributed Optical Fiber

A method of concurrent events signal reconstruction in ultra-long distance distributed optical fiber vibration sensor

2014 ◽  
Vol 40 (1) ◽  
pp. 89-93
Author(s):  
张金权 ZHANG Jinquan ◽  
李香文 LI Xiangwen ◽  
李东 LI Dong ◽  
张欣 ZHANG Xin ◽  
刘素杰 LIU Sujie ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Signal Reconstruction ◽  
Vibration Sensor ◽  
Long Distance ◽  
Distributed Optical Fiber ◽  
Concurrent Events
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