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28 September 2015 Novel gas sensor combined fiber cavity ring-down and frequency-shifted interferometry
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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963469 (2015) https://doi.org/10.1117/12.2194431
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tao Tian, Ciming Zhou, Dian Fan, Yiwen Ou, Hui Tian, and Mengmeng Li "Novel gas sensor combined fiber cavity ring-down and frequency-shifted interferometry", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963469 (28 September 2015); https://doi.org/10.1117/12.2194431
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