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Three-dimensional FEM model of FBGs in PANDA fibers with experimentally determined model parameters
Author(s): Markus Lindner; Barbara Hopf; Alexander W. Koch; Johannes Roths
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Paper Abstract

A 3D-FEM model has been developed to improve the understanding of multi-parameter sensing with Bragg gratings in attached or embedded polarization maintaining fibers. The material properties of the fiber, especially Young's modulus and Poisson's ratio of the fiber's stress applying parts, are crucial for accurate simulations, but are usually not provided by the manufacturers. A methodology is presented to determine the unknown parameters by using experimental characterizations of the fiber and iterative FEM simulations. The resulting 3D-Model is capable of describing the change in birefringence of the free fiber when exposed to longitudinal strain. In future studies the 3D-FEM model will be employed to study the interaction of PANDA fibers with the surrounding materials in which they are embedded.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103232A (23 April 2017); doi: 10.1117/12.2263261
Show Author Affiliations
Markus Lindner, Hochschule für Angewandte Wissenschaften München (Germany)
Barbara Hopf, Hochschule für Angewandte Wissenschaften München (Germany)
Alexander W. Koch, Technische Univ. München (Germany)
Johannes Roths, Hochschule für Angewandte Wissenschaften München (Germany)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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