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Proceedings Paper

Two-channel fiber Bragg-grating strain sensor with high-resolution interferometric wavelength-shift detection
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Paper Abstract

We describe results obtained with a two-channel fiber optic grating sensor system using interferometric determination of strain-induced Bragg-wavelength shifts. The system provides high resolution to quasi-static and dynamic strain perturbations of the gratings in the system. Results demonstrating the detection of low frequency (about 1 Hz) strain levels of about 6 nanostrain/sq rt Hz in a 3-point bending flexural beam experiment are presented.

Paper Details

Date Published: 26 March 1993
PDF: 8 pages
Proc. SPIE 1798, Fiber Optic Smart Structures and Skins V, (26 March 1993); doi: 10.1117/12.141334
Show Author Affiliations
Alan D. Kersey, Naval Research Lab. (United States)
Timothy A. Berkoff, SFA Inc. (United States)
William W. Morey, United Technologies Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1798:
Fiber Optic Smart Structures and Skins V
Richard O. Claus; Robert S. Rogowski, Editor(s)

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