High-spatial-resolution distributed optical fiber strain or temperature sensing

1999 ◽  
Author(s):  
Princy L. Julian ◽  
Mahmoud Farhadiroushan ◽  
Vincent A. Handerek ◽  
Alan J. Rogers
Keyword(s):  
Optical Fiber ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Temperature Sensing ◽  
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.

Fast and high spatial resolution distributed optical fiber sensor

2019 ◽  
Vol 115 ◽  
pp. 277-288 ◽  
Author(s):  
Fereshteh Esmailzadeh Noghani ◽  
Sara Tofighi ◽  
Nafiseh Pishbin ◽  
Ali Reza Bahrampour
Keyword(s):  
Optical Fiber ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Distributed Optical Fiber Sensor ◽  
Distributed Optical Fiber

High-spatial-resolution Distributed Temperature Sensing System Based on a Mode-locked Fiber Laser

2020 ◽  
Author(s):  
Anton O. Chernutsky ◽  
Dmitriy A. Dvoretskiy ◽  
Ilya O. Orekhov ◽  
Stanislav G. Sazonkin ◽  
Yan Zh. Ososkov ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Temperature Sensing ◽  
Distributed Temperature Sensing ◽  
Sensing System
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