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Proceedings Paper

Measurement of gas concentration by wavelength shift method with an EDFA fiber laser loop
Author(s): Haojiang Zhou; Kaikai Guo; Chunsheng Yan
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Paper 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.

Paper Details

Date Published: 29 November 2011
PDF: 6 pages
Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83110D (29 November 2011); doi: 10.1117/12.905541
Show Author Affiliations
Haojiang Zhou, Zhejiang Univ. (China)
Kaikai Guo, Zhejiang Univ. (China)
Chunsheng Yan, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 8311:
Optical Sensors and Biophotonics III
Jürgen Popp, Editor(s)

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