Fiber Optic Strain Sensing With Rf Interferometric Techniques

E. O. Rausch; P. B. Ruffin

doi:10.1117/12.963119

5 February 1990 Fiber Optic Strain Sensing With Rf Interferometric Techniques

E. O. Rausch, P. B. Ruffin

Proceedings Volume 1170, Fiber Optic Smart Structures and Skins II; (1990) https://doi.org/10.1117/12.963119
Event: OE/FIBERS '89, 1989, Boston, United States

Abstract

The design, phase stability and strain sensitivity of a fiber optic interferometric strain sensor are discussed. For this sensor, the laser diode is modulated with a pulsed 100 MHz RF signal. The phase difference between the modulation recovered from the sensing leg and the reference RF oscillation is proportional to strain. Strain sensitivities as low as + 4.5 x 10^-4 were measured.

Citation Download Citation

E. O. Rausch and P. B. Ruffin "Fiber Optic Strain Sensing With Rf Interferometric Techniques", Proc. SPIE 1170, Fiber Optic Smart Structures and Skins II, (5 February 1990); https://doi.org/10.1117/12.963119

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