Measurement of gas concentration by wavelength shift method with an EDFA fiber laser loop

Haojiang Zhou; Kaikai Guo; Chunsheng Yan

doi:10.1117/12.905541

29 November 2011 Measurement of gas concentration by wavelength shift method with an EDFA fiber laser loop

Haojiang Zhou, Kaikai Guo, Chunsheng Yan

Proceedings Volume 8311, Optical Sensors and Biophotonics III; 83110D (2011) https://doi.org/10.1117/12.905541
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

A novel method for trace gas detection is presented and developed. A fiber laser with a gas cell in the loop is constructed, whose output spectrum is changed with the concentration of the gas e.g., acetylene. As the concentration of acetylene changes from 0 to 100% under a standard atmosphere, the peak of output spectrum shifts 0.03nm. It means to our system, a resolution of 3.75 KHz in light frequency change will lead to a sensitivity of ppm in gas concentration measurement, which makes it a economical and promising technique to measure low density gas.

Citation Download Citation

Haojiang Zhou, Kaikai Guo, and Chunsheng Yan "Measurement of gas concentration by wavelength shift method with an EDFA fiber laser loop", Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83110D (29 November 2011); https://doi.org/10.1117/12.905541

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