Strain profile reconstruction of fiber Bragg grating with gradient using chaos genetic algorithm and modified transfer matrix formulation

2008 ◽  
Vol 281 (13) ◽  
pp. 3476-3485 ◽  
Author(s):  
Rongxiang Zhang ◽  
Shijie Zheng ◽  
Yanjun Xia
Keyword(s):  
Genetic Algorithm ◽  
Fiber Bragg Grating ◽  
Transfer Matrix ◽  
Bragg Grating ◽  
Matrix Formulation ◽  
Strain Profile ◽  
Chaos Genetic Algorithm ◽  
Profile Reconstruction

Distributed Strain Reconstruction Based on a Fiber Bragg Grating Reflection Spectrum

2013 ◽  
Vol 20 (1) ◽  
pp. 53-64 ◽  
Author(s):  
Małgorzata Detka ◽  
Małgorzata Detka
Keyword(s):  
Fiber Bragg Grating ◽  
Reflection Spectrum ◽  
Matrix Method ◽  
Transition Matrix ◽  
Optimization Method ◽  
Bragg Grating ◽  
Original Strain ◽  
Single Digit ◽  
Strain Profile ◽  
Distributed Strain

Abstract In this paper, we present a synthesis of the parameters of the fiber Bragg grating (FBG) and the reconstruction of the distributed strain affecting the grating, performed by means of its reflection spectrum. For this purpose, we applied the transition matrix method and the Nelder-Mead nonlinear optimization method. Reconstruction results of the strain profile carried out on the basis of a simulated reflection spectrum as well as measured reflection spectrum of the FBG indicate good agreement with the original strain profile; the profile reconstruction errors are within the single digit percentage range. We can conclude that the Nelder-Mead optimization method combined with the transition matrix method can be used for distributed sensing problems.

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