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Proceedings Paper

Recent advances in gas detection using optical correlation spectroscopy
Author(s): Amy Cheung; Walter Johnstone; David Moodie
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Paper Abstract

A unique approach to gas detection using optical correlation spectroscopy (OCS) has been investigated. By employing a semiconductor optical amplifier (SOA) with an optical fibre delay line to generate the anti-phase signal, zero point drift errors are minimised and compatibility with single mode optical fibre systems has been achieved. Experimental results, obtained for varying concentrations of acetylene (C2H2) gas at different pressures, agree well with the theoretical analysis. Signal-to-noise ratio (SNR) analysis was also performed to predict the theoretical minimum detectable concentration for C2H2.

Paper Details

Date Published: 28 September 2005
PDF: 6 pages
Proc. SPIE 5952, Optical Fibers: Applications, 595204 (28 September 2005); doi: 10.1117/12.622169
Show Author Affiliations
Amy Cheung, Univ. of Strathclyde (United Kingdom)
Walter Johnstone, Univ. of Strathclyde (United Kingdom)
David Moodie, OptoSci Ltd. (United Kingdom)


Published in SPIE Proceedings Vol. 5952:
Optical Fibers: Applications
Leszek R. Jaroszewicz; Brian Culshaw; Anna Grazia Mignani, Editor(s)

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