Practical fiber-optic Bragg grating strain gauge system
- 1 July 1993
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 32 (19) , 3601-3609
- https://doi.org/10.1364/ao.32.003601
Abstract
A fiber-optic strain gauge system for use in structural monitoring and smart-structure applications is described. The strain gauge uses a fiber-optic Bragg grating sensor to measure strain and a passive, wavelength demodulation system to determine the wavelength of the narrow-band, backreflected spectrum from the grating sensor. The fiber-optic strain gauge system permits the measurement of both static and dynamic strains with a noise-limited resolution of , a measurement dynamic range of 27.8 dB, and a bandwidth of 250 Hz.
Keywords
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