Experimental study on location of lightning stroke on OPGW by means of a distributed optical fiber temperature sensor

2015 ◽  
Vol 65 ◽  
pp. 79-82 ◽  
Author(s):  
Lidong Lu ◽  
Yun Liang ◽  
Binglin Li ◽  
Jinghong Guo ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Optical Fiber ◽  
Temperature Sensor ◽  
Lightning Stroke ◽  
Distributed Optical Fiber

scholarly journals Comparative Experimental Study of a High-Temperature Raman-Based Distributed Optical Fiber Sensor with Different Special Fibers

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 574 ◽  
Author(s):  
Ismail Laarossi ◽  
María Quintela-Incera ◽  
José López-Higuera
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Optical Fiber Sensor ◽  
Time Domain Reflectometry ◽  
Fiber Sensor ◽  
Mechanical Resistance ◽  
Distributed Optical Fiber Sensor ◽  
Distributed Optical Fiber

An experimental study of a high temperature distributed optical fiber sensor based on Raman Optical-Time-Domain-Reflectometry (ROTDR) (up to 450 °C) and optical fibers with different coatings (polyimide/carbon, copper, aluminum and gold) is presented. Analysis of the distributed temperature sensor (DTS) measurements determined the most appropriate optical fiber to be used in high temperature industrial environment over long periods of time. To demonstrate the feasibility of this DTS for an industrial application, an optical cable was designed with the appropriate optical fiber and it was hermetically sealed to provide the required mechanical resistance and isolate the fiber from environmental degradations. This cable was used to measure temperature up to 360 °C of an industrial furnace during 7 days.

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.

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.

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