Study of quasi-distributed optical fiber methane sensors based on laser absorption spectrometry

Weihua Gong; Yubin Wei; Yanfang Li; Zhaowei Wang; Tingting Zhang; Jun Chang; Kenneth T. V. Grattan; Tongyu Liu

doi:10.1117/12.2548181

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18 December 2019 Study of quasi-distributed optical fiber methane sensors based on laser absorption spectrometry

Weihua Gong, Yubin Wei, Yanfang Li, Zhaowei Wang, Tingting Zhang, Jun Chang, Kenneth T. V. Grattan, Tongyu Liu

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Proceedings Volume 11340, AOPC 2019: Optical Fiber Sensors and Communication; 1134020 (2019) https://doi.org/10.1117/12.2548181
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

The coal industry plays an important role in the economic development of China. With the increase of coal mining year by year, coal mine accidents caused by gas explosion also occur frequently, which poses a serious threat to the life safety of absenteeism and national property safety. Therefore, high-precision methane fiber sensor is of great significance to ensure coal mine safety. This paper mainly introduces two kinds of quasi-distributed gas optical fiber sensing systems based on laser absorption spectroscopy. The gas fiber optic sensor based on absorption spectrum has high measurement accuracy, fast response and long service life. One is quasi-distributed optical fiber sensing system based on spatial division multiplexing (SDM) technology and the other is quasi-distributed optical fiber sensing system based on optical time domain reflection and time division multiplexing(TDM) technology.

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Weihua Gong, Yubin Wei, Yanfang Li, Zhaowei Wang, Tingting Zhang, Jun Chang, Kenneth T. V. Grattan, and Tongyu Liu "Study of quasi-distributed optical fiber methane sensors based on laser absorption spectrometry", Proc. SPIE 11340, AOPC 2019: Optical Fiber Sensors and Communication, 1134020 (18 December 2019); https://doi.org/10.1117/12.2548181

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