Verification of a three dimensional FEM model for FBGs in PANDA fibers by transversal load experiments
- Resource Type
- Conference
- Authors
- Fischer, Bennet; Hopf, Barbara; Lindner, Markus; Koch, Alexander W.; Roths, Johannes
- Source
- 2017 25th Optical Fiber Sensors Conference (OFS) Optical Fiber Sensors Conference (OFS), 2017 25th. :1-4 Apr, 2017
- Subject
- Photonics and Electrooptics
Optical fiber sensors
Load modeling
Solid modeling
Fiber gratings
Optical fiber polarization
Finite element analysis
FBG
Transverse Load
PANDA
Birefringence
3D FEM Simulation
Multi-parameter measurements
- Language
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.