Distributed Brillouin temperature sensing based on single-photon detector in optical fiber

Liwen Sheng; Jisong Yan; Lin Huang; Ming Yuan; Shan Qiao; Aiguo Zhang; Jiaqing Liu; Ligong Li; Fushun Nian; Shuai Zhou

doi:10.1117/12.2601785

31 August 2021 Distributed Brillouin temperature sensing based on single-photon detector in optical fiber

Liwen Sheng, Jisong Yan, Lin Huang, Ming Yuan, Shan Qiao, Aiguo Zhang, Jiaqing Liu, Ligong Li, Fushun Nian, Shuai Zhou

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119070J (2021) https://doi.org/10.1117/12.2601785
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

We propose and demonstrate experimentally a direct-detection single-end Brillouin temperature sensing system based on single-photon detector to evaluate the ambient temperature along the sensing link, which is an excellent candidate for the demodulation of frequency shift from Brillouin gain spectrum in traditional Brillouin configurations. In the proposed method, the ratio of the Rayleigh backscattering component and the Brillouin anti-Stokes component is used to demodulate the temperature information along the measured optical fiber link. Proof-of-concept experiment proves that a spatial resolution of 1.2m over 4.2km sensing range with a 1.24°C temperature error can be obtained. Additionally, the proposed direct-detection Brillouin sensor maintains large dynamic range, which boosts its practicability.

Citation Download Citation

Liwen Sheng, Jisong Yan, Lin Huang, Ming Yuan, Shan Qiao, Aiguo Zhang, Jiaqing Liu, Ligong Li, Fushun Nian, and Shuai Zhou "Distributed Brillouin temperature sensing based on single-photon detector in optical fiber", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119070J (31 August 2021); https://doi.org/10.1117/12.2601785

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