Spatial mode pattern stability with strain for a localized, single-ended, two-mode fiber optic strain sensor

A. Tino Alavie; Barry G. Grossman

doi:10.1117/12.141337

26 March 1993 Spatial mode pattern stability with strain for a localized, single-ended, two-mode fiber optic strain sensor

A. Tino Alavie, Barry G. Grossman

Author Affiliations +

Proceedings Volume 1798, Fiber Optic Smart Structures and Skins V; (1993) https://doi.org/10.1117/12.141337
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

An interrupt immune technique for the two-mode sensor is designed and developed. Preliminary results indicate a minimum resolution of half of one fringe for a 15-cm gauge length sensor in transmission. Also, a new derivation of the phase-strain relationship for a two-mode elliptical core fiber sensor has been carried out which shows an improvement of 5 percent when compared to the previous models. Finally, a procedure for single-ending and localizing the two-mode sensor is given in detail. A single-ended, localized sensor has been used in a cantilever beam experiment and yields a strain sensitivity of 0.1 rad/micro-epsilon m.

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A. Tino Alavie and Barry G. Grossman "Spatial mode pattern stability with strain for a localized, single-ended, two-mode fiber optic strain sensor", Proc. SPIE 1798, Fiber Optic Smart Structures and Skins V, (26 March 1993); https://doi.org/10.1117/12.141337

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