Recent advances in gas detection using optical correlation spectroscopy

Amy Cheung; Walter Johnstone; David Moodie

doi:10.1117/12.622169

28 September 2005 Recent advances in gas detection using optical correlation spectroscopy

Amy Cheung, Walter Johnstone, David Moodie

Proceedings Volume 5952, Optical Fibers: Applications; 595204 (2005) https://doi.org/10.1117/12.622169
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

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.

Citation Download Citation

Amy Cheung, Walter Johnstone, and David Moodie "Recent advances in gas detection using optical correlation spectroscopy", Proc. SPIE 5952, Optical Fibers: Applications, 595204 (28 September 2005); https://doi.org/10.1117/12.622169

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