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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Gas detection by cavity ring-down absorption with a fibre optic amplifier loop

Atherton, K. and Stewart, G. and Culshaw, B. (2002) Gas detection by cavity ring-down absorption with a fibre optic amplifier loop. In: Vibrational spectrocopy-based sensor systems. Proceedings of the society of photo-optical instrumentation engineers (SPIE) . SPIE, Bellingham, WA, pp. 25-31. ISBN 0819443050

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Abstract

Cavity ring-down is investigated as a technique to increase the sensitivity of optical fibre gas sensors. The ring-down cavity consists of an optical fibre loop containing a micro-optic gas cell and an erbium-doped optical fibre amplifier. The erbium fibre amplifier introduces gain into the cavity to increase the ring-down times and therefore the system sensitivity. This paper reports an investigation of the system sensitivity