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Proceedings Paper

Novel gas sensor combined fiber cavity ring-down and frequency-shifted interferometry
Author(s): Tao Tian; Ciming Zhou; Dian Fan; Yiwen Ou; Hui Tian; Mengmeng Li
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Paper Abstract

A novel gas senor combined fiber cavity ring-down (CRD) with frequency-shifted interferometry (FSI) is proposed and demonstrated. Compared to the conventional fiber CRD techniques, the CRD decay transient was originated from continuous-wave light as a function of the distance transmitted in the cavity, therefore this method needs neither pulsed light nor fast detection. As a proof-of-concept experiment, we employed a micro-optical gas cell as the sensing element and measured different concentrations of acetylene samples. The experimental results show that the FSI-CRD system has a resolution of 0.15798%/dB, and it provides a simple and cost-effective scheme for gas sensing.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963469 (28 September 2015); doi: 10.1117/12.2194431
Show Author Affiliations
Tao Tian, Wuhan Univ. of Technology (China)
Ciming Zhou, Wuhan Univ. of Technology (China)
Dian Fan, Wuhan Univ. of Technology (China)
Yiwen Ou, Wuhan Univ. of Technology (China)
Wuchang Institute of Technology (China)
Hui Tian, Wuhan Univ. of Technology (China)
Mengmeng Li, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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