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Optical Engineering

Reconstruction of the nonuniform strain profile for fiber Bragg grating using dynamic particle swarm optimization algorithm and its experimental verification
Author(s): Hongtao Wang; Guizhen Zhang; Shijie Zheng
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Paper 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.

Paper Details

Date Published: 4 October 2013
PDF: 10 pages
Opt. Eng. 52(10) 107103 doi: 10.1117/1.OE.52.10.107103
Published in: Optical Engineering Volume 52, Issue 10
Show Author Affiliations
Hongtao Wang, Nanjing Univ. of Aeronautics and Astronautics (China)
Guizhen Zhang, Zhejiang Univ. of Science and Technology (China)
Shijie Zheng, Nanjing Univ. of Aeronautics and Astronautics (China)

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