Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/70510
Title: Hollow-core fiber-based high finesse resonating cavity for high sensitivity gas detection
Authors: Tan, YZ 
Jin, W 
Yang, F 
Qi, Y 
Zhang, CZ 
Lin, YC 
Ho, HL 
Keywords: Fabry-Perot resonator
Gas sensor
Optical fiber sensor
Photonic crystal fiber
Issue Date: 2017
Publisher: Institute of Electrical and Electronics Engineers
Source: Journal of lightwave technology, 2017, v. 35, no. 14, p. 2887-2893 How to cite?
Journal: Journal of lightwave technology 
Abstract: High finesse hollow-core photonic bandgap fiber (HC-PBF) resonating Fabry-Perot gas cells are presented. These gas cells are made with a piece of HC-PBF sandwiched by two single mode fibers with mirrored ends. A HC-PBF cavity made with 6.75-cm-long HC-1550-06 fiber achieved a cavity finesse of 128, corresponding to an effective optical path length of similar to 5.5 m. Experiment with a 9.4-cm-long Fabry-Perot gas cell with a finesse of 68 demonstrated a detection limit of 7 ppm acetylene. Compared with a single-path nonresonating HC-PBF, the use of a high finesse resonating HC-PBF cavity can reduce significantly the effect of modal interference on gas detection and improve the detection sensitivity. The cavity-enhanced HC-PBF gas cells enable stronger light-gas interaction and can be used to develop all-fiber gas sensors with high sensitivity and fast response.
URI: http://hdl.handle.net/10397/70510
ISSN: 0733-8724
EISSN: 1558-2213
DOI: 10.1109/JLT.2017.2705229
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