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Proceedings Paper

Modeling of the multiparameter Bragg grating sensor
Author(s): Craig M. Lawrence; Drew V. Nelson; Alberto Makino; Eric Udd
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Paper 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.

Paper Details

Date Published: 2 September 1997
PDF: 8 pages
Proc. SPIE 3180, Third Pacific Northwest Fiber Optic Sensor Workshop, (2 September 1997); doi: 10.1117/12.285603
Show Author Affiliations
Craig M. Lawrence, Stanford Univ. (United States)
Drew V. Nelson, Stanford Univ. (United States)
Alberto Makino, Stanford Univ. (United States)
Eric Udd, Blue Road Research (United States)

Published in SPIE Proceedings Vol. 3180:
Third Pacific Northwest Fiber Optic Sensor Workshop
Eric Udd; Chuck C. Jung, Editor(s)

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