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Proceedings Paper

Optical fiber remote sensing system of methane at 1645nm using wavelength-modulation technique
Author(s): Sanguo Li; Thomas Koscica; Yan Zhang; David Li; Hong-Liang Cui
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Paper Abstract

This paper will demonstrate a particular one-channel optical-fiber- based CH4 gas real-time monitoring system in the mining complexes and residential area. A long-distance silica fiber link with self-design gas sensor heads has been employed in conjunction with a wavelength-tunable InGaAsP DFB laser diode at 1.64μm (around R (6) absorption peak of methane) to realize highly sensitive remote interrogation of CH4. By wavelength modulation with the DFB laser diode and a self-design processing circuit, sensitivities of less than 0.1% (volume) have been achieved.

Paper Details

Date Published: 5 November 2005
PDF: 9 pages
Proc. SPIE 5995, Chemical and Biological Standoff Detection III, 59950Y (5 November 2005); doi: 10.1117/12.630688
Show Author Affiliations
Sanguo Li, Stevens Institute of Technology (United States)
Thomas Koscica, Stevens Institute of Technology (United States)
Yan Zhang, Stevens Institute of Technology (United States)
David Li, Stevens Institute of Technology (United States)
Hong-Liang Cui, Stevens Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5995:
Chemical and Biological Standoff Detection III
James O. Jensen; Jean-Marc Thériault, Editor(s)

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