Temperature calibration of optical fiber attenuation differences induced measurement error of raman distributed temperature sensor

Tang, Yuquan and Sun, Miao and Li, Jun and Yang, Shuang and Culshaw, Brian and Dong, Fengzhong; Kalinowski, Hypolito J. and Fabris, José Luís and Bock, Wojtek J., eds. (2015) Temperature calibration of optical fiber attenuation differences induced measurement error of raman distributed temperature sensor. In: Proceedings of SPIE - The International Society for Optical Engineering. SPIE, BRA. ISBN 9781628418392

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Abstract

The effect of optical fiber attenuation differences (AD) induced temperature error of Raman distributed temperature sensor (RDTS) is analyzed using the temperature demodulation algorithm. First of all, a novel method to address the effects caused by the AD between Stokes and anti-Stokes light is proposed. Furthermore, the temperature measurement error caused by additional AD of fiber temperature is also reduced by using a formula obtained by experimental data. The experimental results demonstrate that the RDTS system can measure different temperature zones more accurately.