Modeling of the multiparameter Bragg grating sensor

Craig M. Lawrence; Drew V. Nelson; Alberto Makino; Eric Udd

doi:10.1117/12.285603

2 September 1997 Modeling of the multiparameter Bragg grating sensor

Craig M. Lawrence, Drew V. Nelson, Alberto Makino, Eric Udd

Proceedings Volume 3180, Third Pacific Northwest Fiber Optic Sensor Workshop; (1997) https://doi.org/10.1117/12.285603
Event: Third Pacific Northwest Fiber Optic Sensor Workshop, 1997, Troutdale, OR, United States

Abstract

Strains produced in the core of a multi-parameter Bragg grating sensor by transverse loading, axial loading or a uniform temperature change are computed by finite element analyses. The sensor is formed by writing gratings at two wavelengths in polarization maintaining fiber in which birefringence in the core is induced by an elliptical stress applying region. The finite element model accounts for the differences in geometry and mechanical properties of the different regions of the fiber. The computed strains are needed to determine the elements of a matrix that relates wavelength shifts of Bragg peaks to axial strain, two components of transverse strain and temperature change.

Citation Download Citation

Craig M. Lawrence, Drew V. Nelson, Alberto Makino, and Eric Udd "Modeling of the multiparameter Bragg grating sensor", Proc. SPIE 3180, Third Pacific Northwest Fiber Optic Sensor Workshop, (2 September 1997); https://doi.org/10.1117/12.285603

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