Fiber Bragg grating cavity sensor for simultaneous measurement of strain and temperature
- 1 January 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 11 (1), 105-107
- https://doi.org/10.1109/68.736409
Abstract
A novel and short (5 mm long) fiber grating based sensor with a fiber grating Fabry-Perot cavity (GFPC) structure was fabricated and tested for simultaneous measurement of strain and temperature. The sensor exhibits unique properties that it possesses two spectral peaks within its main reflection band and the normalized peak power difference, in addition to its peak wavelength shift, changes linearly with strain or temperature. The accuracy of this particular sensor in measuring strain and temperature are estimated to be /spl plusmn/30 /spl mu/s in a range from 0 to 3000 /spl mu/s and /spl plusmn/0.4/spl deg/C from 20/spl deg/C to 60/spl deg/C, respectively.Keywords
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