Simultaneous measurement of strain and temperature by use of a single-fiber Bragg grating and an erbium-doped fiber amplifier
- 1 May 1999
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 38 (13), 2749-2751
- https://doi.org/10.1364/ao.38.002749
Abstract
We propose and demonstrate a novel sensor by using a single-fiber Bragg grating that can simultaneously measure strain and temperature with the aid of an erbium-doped fiber amplifier. By using a linear variation in the amplified spontaneous emission power of the erbium-doped fiber amplifier with temperature, we determine the temperature. By subtracting the temperature effect from the fiber Bragg grating Bragg wavelength shift, we determine the strain. Experiments show rms deviations of 18.2 µε and 0.7 °C for strain and temperature, respectively.Keywords
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