Radiometric figures of merit of a fiber optic temperature sensor

Jesus Castrellon-Uribe; Gonzalo Paez

doi:10.1117/12.372694

6 December 1999 Radiometric figures of merit of a fiber optic temperature sensor

Jesus Castrellon-Uribe, Gonzalo Paez

Proceedings Volume 3759, Infrared Spaceborne Remote Sensing VII; (1999) https://doi.org/10.1117/12.372694
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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 (²H_11/2 and ⁴S_3/2), 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.

Citation Download Citation

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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