Mr. Zhiming Liu Profile

Zhiming Liu

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Proceedings Article | 8 January 2021 Paper

Research on the simultaneous distributed measurement of temperature and strain based on Brillouin scattering effect in communication optical fiber

Liwen Sheng, Ligong Li, Jinpeng Lang, Peng Li, Jie Dong, Ming Yuan, Jisong Yan, Zhiming Liu

Proceedings Volume 11607, 1160702 (2021) https://doi.org/10.1117/12.2582681

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A unique multi-parameter sensor for distributed measurement of temperature and strain based on spontaneous Brillouin scattering in communication optical fiber is proposed, which is an excellent candidate for the crosstalk effects in conventional Brillouin sensing network. In experimental section, the discrimination of strain and temperature is successfully demonstrated by analyzing the unequal sensing coefficients of the Brillouin frequency shifts generated by different acoustic modes. The Brillouin frequency shifts of first two three peaks are successfully measured to discriminate the strain and temperature with an accuracy 19.48με and 0.93°C in 10km sensing range. The proposed distributed Brillouin optical fiber sensor allows simultaneously temperature and strain measurement, thus opening a door for practical application such as smart grid.

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