distributed brillouin sensor
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Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 187
Author(s):  
Marcelo A. Soto ◽  
Alin Jderu ◽  
Dorel Dorobantu ◽  
Marius Enachescu ◽  
Dominik Ziegler

A high-order polynomial fitting method is proposed to accelerate the computation of double-Gaussian fitting in the retrieval of the Brillouin frequency shifts (BFS) in optical fibers showing two local Brillouin peaks. The method is experimentally validated in a distributed Brillouin sensor under different signal-to noise ratios and realistic spectral scenarios. Results verify that a sixth-order polynomial fitting can provide a reliable initial estimation of the dual local BFS values, which can be subsequently used as initial parameters of a nonlinear double-Gaussian fitting. The method demonstrates a 4.9-fold reduction in the number of iterations required by double-Gaussian fitting and a 3.4-fold improvement in processing time.


2015 ◽  
Vol 54 (11) ◽  
pp. 3231 ◽  
Author(s):  
Haidong Gu ◽  
Huijuan Dong ◽  
Guangyu Zhang ◽  
Wenhua Hu ◽  
Zhongjian Li

2014 ◽  
Author(s):  
Zhisheng Yang ◽  
Xiaobin Hong ◽  
Hongxiang Guo ◽  
Jian Wu ◽  
Jintong Lin

2010 ◽  
Vol 28 (18) ◽  
pp. 2621-2626 ◽  
Author(s):  
Yun Li ◽  
Xiaoyi Bao ◽  
Yongkang Dong ◽  
Liang Chen

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