Verification of a three-dimensional FEM model for FBGs in PANDA fibers by transversal load experiments

Bennet Fischer; Barbara Hopf; Markus Lindner; Alexander W. Koch; Johannes Roths

doi:10.1117/12.2263262

23 April 2017 Verification of a three-dimensional FEM model for FBGs in PANDA fibers by transversal load experiments

Bennet Fischer, Barbara Hopf, Markus Lindner, Alexander W. Koch, Johannes Roths

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103232B (2017) https://doi.org/10.1117/12.2263262
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

A 3D FEM model of an FBG in a PANDA fiber with an extended fiber length of 25.4 mm is presented. Simulating long fiber lengths with limited computer power is achieved by using an iterative solver and by optimizing the FEM mesh. For verification purposes, the model is adapted to a configuration with transversal loads on the fiber. The 3D FEM model results correspond with experimental data and with the results of an additional 2D FEM plain strain model. In further studies, this 3D model shall be applied to more sophisticated situations, for example to study the temperature dependence of surface-glued or embedded FBGs in PANDA fibers that are used for strain-temperature decoupling.

Citation Download Citation

Bennet Fischer, Barbara Hopf, Markus Lindner, Alexander W. Koch, and Johannes Roths "Verification of a three-dimensional FEM model for FBGs in PANDA fibers by transversal load experiments", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103232B (23 April 2017); https://doi.org/10.1117/12.2263262

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