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Gas sensors using correlation spectroscopy compatible with fibre-optic operation

Edwards, H.O. and Dakin, J.P. (1993) Gas sensors using correlation spectroscopy compatible with fibre-optic operation Sensors and Actuators B: Chemical, 11, (1-3), pp. 9-19.

Record type: Article


This paper reviews methods for gas detection using real-time correlation spectroscopy. These methods involve using a gas sample in a reference cell as a matched optical filter to detect, preferentially, similar absorption spectra in a measurement cell. The methods all have the advantage of excellent selectivity, even using broadband sources, and are suitable for remote detection over optical-fibre leads. Our previously published methods using pressure and Stark modulation are reviewed. In addition, our recent theoretical treatment of the methods is presented. Finally, we describe new atmospheric-pressure measurements of gases using the method of phase-modulation spectroscopy.

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Published date: March 1993


Local EPrints ID: 78319
ISSN: 0925-4005
PURE UUID: 3c04d6d3-9090-4c11-a976-65f709ed5e12

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:25

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Author: H.O. Edwards
Author: J.P. Dakin

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