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12 March 2020 Temperature accuracy enhanced dual-end distributed temperature sensor employing Rayleigh compensation algorithm
Liang Pan, Xiaofei Zhu, Na Li, Xiaojun Yang, Rui Du, Chaoshuai Fu, Chang Tian, Yangyang He, Yong Yang
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Proceedings Volume 11436, 2019 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 1143606 (2020) https://doi.org/10.1117/12.2541204
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China
Abstract
An algorithm of Rayleigh noise compensation in dual-end configured distributed temperature sensor (DE-DTS) is proposed in this paper. A 2 km long multi-mode fiber is used to calculate the attenuation of the light within Anti-Stokes and Stokes bandwidth, and figure out the isolation of the wavelength division multiplex through both Anti-Stokes channel and Stokes channel. Experiments are taken out to validate the proposed Rayleigh compensation algorithm. As a result, the Rayleigh noise in both Anti-Stokes component and Stokes component is compensated, and the temperature error of the dual-end configured distributed temperature sensor is revised. With the help of the proposed algorithm, a dual-end DTS can reach to the absolute accuracy of 1.09°C (RMSE) between 180°C to 300°C, which significantly monishes the temperature error compared to the sensor without Rayleigh noise compensation.
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Liang Pan, Xiaofei Zhu, Na Li, Xiaojun Yang, Rui Du, Chaoshuai Fu, Chang Tian, Yangyang He, and Yong Yang "Temperature accuracy enhanced dual-end distributed temperature sensor employing Rayleigh compensation algorithm", Proc. SPIE 11436, 2019 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 1143606 (12 March 2020); https://doi.org/10.1117/12.2541204
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KEYWORDS
Raman spectroscopy
Temperature sensors
Sensors
Data acquisition
Backscatter
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