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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wu Xi-jun Wang Yu-tian Zhao Yan-tao Zhao Xing-tao Pan Zhao |
| Copyright Year | 2010 |
| Description | Author affiliation: Measurement Technology and Instrumentation Key Lab of Hebei Province, Yanshan University Qinhuangdao, China (Wu Xi-jun; Wang Yu-tian; Zhao Yan-tao; Zhao Xing-tao; Pan Zhao) |
| Abstract | A novel optical fiber gas sensor based on cascade of hollow-core photonic crystal fibers (HC-PCF) is proposed. Using the comb filter characteristic of Fabry-Perot (F-P) interferometer, Near-infrared evenly-spaced multi methane absorption lines (R3, R4 and R5 lines in 2v3 overtone band around 1.66 µm) were detected simultaneously by tandem F-P interferometer and broadband SLED light source. Difference absorption detection based on equivalent absorption coefficient was used as signal processing method. Chirped fiber grating with its central wavelength around R4 was adopted as optical band-pass filter. The light power corresponding to three absorption lines and three reference wavelength was detected simultaneously by PIN PD. The diffusion of gas inside of the hollow core is analyzed and the optimal design of sensing head is completed. The feasibility of the system for methane detection is verified by experiments. |
| Starting Page | 811 |
| Ending Page | 815 |
| File Size | 795692 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424467129 |
| e-ISBN | 9781424467129 |
| DOI | 10.1109/WCICA.2010.5554098 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-07-07 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Absorption Optical fiber sensors Light sources Optical interferometry Interference Comb filtering Optical fiber sensor Hollow-core photonic crystal fiber Difference absorption Methane detection |
| Content Type | Text |
| Resource Type | Article |
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