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6 December 1999 Radiometric figures of merit of a fiber optic temperature sensor
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Abstract
We analyze the performance of a remote temperature sensor incorporating erbium-doped silica fiber as a sensing element. Its physical principle of operation is based on the thermalization between two energy levels responsible for the emission in green (2H11/2 and 4S3/2), using the fluorescence intensity-ratio technique. We evaluate the sensor performance for different spectral lines in the wavelength interval (510 nm - 570 nm), with the radiometric figures-of-merit, such as the responsivity, the detectivity star, and the noise equivalent power, starting from the signal-to-noise analysis. We find an improved signal-to-noise ratio for this sensor of about 38.3 dB for the spectral line at 520 nm. The sensitivity of this sensor is anticipated to be less than 0.01 K-1 at room temperature. The usable temperature interval of its operation is from 300 K to about 850 K.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jesus Castrellon-Uribe and Gonzalo Paez "Radiometric figures of merit of a fiber optic temperature sensor", Proc. SPIE 3759, Infrared Spaceborne Remote Sensing VII, (6 December 1999); https://doi.org/10.1117/12.372694
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