空芯光子晶体带隙光纤用于甲烷检测的研究

doi:10.3969/j.issn.1000-1158.2019.06.32

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Abstract All-fiber methane detection system based on the spectrum absorption properties of methane using a hollow-core photonic bandgap fiber (HC-PBGF) as special gas cell was demonstrated. The detection wavelength of methane was chosen on the basis of HITRAN2012 and HAWKS; In order to accelerate methane gas diffusion, pressure difference between inlet of HC-PBGF and outlet of HC-PBGF was formed with air pump. The optical path can be extended twice by using mirrors. The results indicated that the time is 190 seconds of the gas diffusion, system value fluctuation is 0.012% in half-hour and average repetition rate is 99.63%. Finally, making up different concentration methane gases, the results indicated that methane concentration has a good linear relationship with relative strength of absorption and the linearity is 99.92%. The detection system is response speed and portable on account of the hollow-core of HC-PBGF to detect methane and make online detection more convenient.

Key words： metrology methane detection gas sensing hollow-core photonic bandgap fiber gas filling HITRAN database

Received: 25 May 2018 Published: 10 October 2019

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TB99

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	WANG Zhi-fang
	WANG Shu-tao
	WANG Gui-chuan
	CHE Xian-ge

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WANG Zhi-fang,WANG Shu-tao,WANG Gui-chuan, et al. Research on the Detection of Methane Using Hollow Photonic Band Gap Fiber[J]. Acta Metrologica Sinica, 2019, 40(6): 1135-1139.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.06.32 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I6/1135

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