Abstract
A fiber optic sensor device has been developed incorporating a short length of erbium doped fiber fused in close proximity to a single-fiber Bragg grating, to measure both the fluorescent lifetime decay and the wavelength shift in these respective elements, for temperature and strain determination. Calibration results obtained from this simple, low cost, intrinsic sensor scheme show standard deviation errors of 20.4 με and 1.2 °C over strain and temperature ranges of 22–1860 με and 25–120 °C, respectively.
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