Study on mode-filtered light sensor for methane detection

A novel mode-filtered light gas sensor has been reported. It was constructed by inserting an optical fiber deposited by a thin silicone cladding of cryptophane A into a fused-silica capillary. When different concentration of methane gas was introduced to the sensor, the phenomenon that mode-filtered...

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Bibliographic Details
Published in:Chinese chemical letters 2009-02, Vol.20 (2), p.210-212
Main Authors: Wu, Suo Zhu, Shuang, Shao Min, Zhang, Yan, Li, Zhong Ping, Choi, Martin M.F., Zhang, Cai Hong, Dong, Chuan
Format: Article
Language:English
Subjects:
Cryptophane A
Methane
Mode-filtered light
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Summary:A novel mode-filtered light gas sensor has been reported. It was constructed by inserting an optical fiber deposited by a thin silicone cladding of cryptophane A into a fused-silica capillary. When different concentration of methane gas was introduced to the sensor, the phenomenon that mode-filtered light intensity decreased with the increasing concentration of methane was observed. And a linear relationship was obtained within the methane concentration range of 0.0–16.0% (v/v). The detection limit was 0.06% (v/v). The mode-filtered light sensor has been exploited to respond to various concentrations of methane gas at room temperature.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2008.11.006