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), 9-19.


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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.

Item Type: Article
ISSNs: 0925-4005 (print)
1873-3077 (electronic)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 78319
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:58

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