Fiber optic sensor for simultaneous measurement of strain and temperature
- 1 February 1991
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- p. 249-260
- https://doi.org/10.1117/12.24753
Abstract
The paper proposes polarimetric and two-mode differential interferometric schemes incorporated in an elliptical-core fiber to resolve strain and temperature simultaneously. Initial results indicate accuracies of +/- 10 microns/m and +/- 5 C for strain and temperature measurements, respectively. A technique, based on the evaluation of the condition number of a matrix, is shown to be useful in evaluating comparative merits of multiparameter sensing schemes. Experimental results for four fibers are presented, and cross-sensitivity issues are discussed.Keywords
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