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Proceedings Paper

High finesse hollow-core fiber resonating cavity for high sensitivity gas sensing application
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Paper Abstract

We present all-fiber resonating Fabry-Perot gas cells made with a piece of hollow-core photonic bandgap fiber (HCPBF) sandwiched by two single mode fibers with mirrored ends. A HC-PBF cavity made of 6.75-cm-long HC-1550-06 fiber achieved a cavity finesse of 128, corresponding to an effective optical path length of 5.5 m. Such HC-PBF cavities can be used as absorption cells for high sensitivity gas detection with fast response. Preliminary experiment with a 9.4-cm-long resonating gas cell with a finesse of 68 demonstrated a detection limit better than 7.5 p.p.m. acetylene.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230A (23 April 2017); doi: 10.1117/12.2265484
Show Author Affiliations
Yanzhen Tan, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Shenzhen Research Institute (China)
Wei Jin, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Shenzhen Research Institute (China)
Fan Yang, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Shenzhen Research Institute (China)
Hoi Lut Ho, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Shenzhen Research Institute (China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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