Reconstruction of the nonuniform strain profile for fiber Bragg grating using dynamic particle swarm optimization algorithm and its experimental verification

Hongtao Wang; Guizhen Zhang; Shijie Zheng

doi:10.1117/1.OE.52.10.107103

4 October 2013 Reconstruction of the nonuniform strain profile for fiber Bragg grating using dynamic particle swarm optimization algorithm and its experimental verification

Hongtao Wang; Guizhen Zhang; Shijie Zheng;

Author Affiliations +

Optical Engineering, 52(10), 107103 (2013). doi:10.1117/1.OE.52.10.107103

Abstract

An innovative method based on dynamic particle swarm optimization (DPSO) algorithm is presented to demodulate the strain profile along a fiber Bragg grating (FBG) from its reflection spectrum, which is calculated by using the modified transfer matrix method. To improve the optimization performances of algorithm itself, the inertia weight of the DPSO algorithm is adjusted dynamically according to the distance between the individual particle and the global optimal particle in the current population. Then the numerical simulation and experimental verification of the reconstruction of nonuniform strain profiles are comprehensively carried out. Both the simulation examples and experimental results verify the feasibility and validity of the present method.

Citation Download Citation

Hongtao Wang, Guizhen Zhang, Shijie Zheng, "Reconstruction of the nonuniform strain profile for fiber Bragg grating using dynamic particle swarm optimization algorithm and its experimental verification," Optical Engineering 52(10), 107103 (4 October 2013). https://doi.org/10.1117/1.OE.52.10.107103

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