Methods of ameliorating distributed optical fiber temperature-sensor system precision

2002 ◽  
Author(s):  
Yutian Wang ◽  
Hongli Sui ◽  
Zong Meng
Keyword(s):  
Optical Fiber ◽  
Temperature Sensor ◽  
Sensor System ◽  
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

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

A Calibration Method for Distributed Optical Fiber Temperature Sensor

2010 ◽  
Vol 44-47 ◽  
pp. 2774-2777
Author(s):  
Le Chen ◽  
Xiao Li Zhang ◽  
Yan Song
Keyword(s):  
Optical Fiber ◽  
Temperature Sensor ◽  
Environmental Temperature ◽  
Calibration Method ◽  
Measurement Precision ◽  
Temperature Calibration ◽  
Calibration Technique ◽  
Calibration Methods ◽  
Accurate Temperature ◽  
Distributed Optical Fiber

Based on the principle of the distributed optical fiber temperature sensor, the research with temperature calibration technique for temperature measurement precision of system was studied in this paper. Accurate temperature was gotten by standards of environmental temperature thermometer, with different temperature calibration methods to solve the accuracy problem of the distributed optical fiber temperature sensor.

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