A method for the measurement of the concentration of methane is experimentally demonstrated. The wavelength filter and gas cell are combined by using one Fabry-Perot etalon, which is filmed with the reflectivity of 96%. The optical broadband source is not only filtered to match the absorption wavelength of methane, but also absorbed by the methane in the same Fabry-Perot etalon. The concentration of the methane can be detected directly by measuring the transmission intensity. Compared with the conventional method, the proposed method possesses low costand high stability.
© 2013 Optical Society of Korea
Original Manuscript: August 9, 2013
Revised Manuscript: October 14, 2013
Manuscript Accepted: October 16, 2013
Published: December 25, 2013
Jiansen Ye and Zhuo Li, "A Method for the Measurement of Methane Gas Based on Multi-beam Interferometry," J. Opt. Soc. Korea 17, 481-485 (2013)
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