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

Yanzhen Tan; Wei Jin; Fan Yang; Hoi Lut Ho

doi:10.1117/12.2265484

23 April 2017 High finesse hollow-core fiber resonating cavity for high sensitivity gas sensing application

Yanzhen Tan, Wei Jin, Fan Yang, Hoi Lut Ho

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103230A (2017) https://doi.org/10.1117/12.2265484
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

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.

Citation Download Citation

Yanzhen Tan, Wei Jin, Fan Yang, and Hoi Lut Ho "High finesse hollow-core fiber resonating cavity for high sensitivity gas sensing application", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230A (23 April 2017); https://doi.org/10.1117/12.2265484

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