Fiber optic sensor for simultaneous measurement of strain and temperature

Ashish M. Vengsarkar; W. Craig Michie; Lilja Jankovic; Brian Culshaw; Richard O. Claus

doi:10.1117/12.24753

1 February 1991 Fiber optic sensor for simultaneous measurement of strain and temperature

Ashish M. Vengsarkar, W. Craig Michie, Lilja Jankovic, Brian Culshaw, Richard O. Claus

Proceedings Volume 1367, Fiber Optic and Laser Sensors VIII; (1991) https://doi.org/10.1117/12.24753
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

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.

Citation Download Citation

Ashish M. Vengsarkar, W. Craig Michie, Lilja Jankovic, Brian Culshaw, and Richard O. Claus "Fiber optic sensor for simultaneous measurement of strain and temperature", Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); https://doi.org/10.1117/12.24753

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