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18 December 2002 Performance predictions of a fiber-optic temperature sensor
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We analyze and predict the performance of a fiber optic temperature sensor from the measured fluorescence spectrum in order to optimize its design. We apply this analysis to the erbium-doped silica fiber employing the power ratio technique. We develop the expressions for the signal-to-noise ratio in the band to optimize the sensor performance in each spectral channel. We improve the signal-to-noise ratio by a factor of five for each channel, compared to earlier results. We evaluate the analytical expression for the sensor sensitivity and predict it to be about 0.02 K-1 for the temperature interval from room temperature to above 200 C, increasing from 0.01 K-1 at the edges of the interval to 0.03 K-1 at the center, at 100-130 C. The sensitivity again increases at temperatures higher than 300 C, delineating its useful temperature intervals.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gonzalo Paez and Marija Strojnik "Performance predictions of a fiber-optic temperature sensor", Proc. SPIE 4818, Infrared Spaceborne Remote Sensing X, (18 December 2002);

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