An all-fiber compact gas sensing system using a hollow-core photonic bandgap fiber (HC-PBF) as a gas cell is proposed in this paper. Compared with the present reported microstructured optical-fiber gas cells, the HC-PBF gas cell proposed here has relatively lower transmission loss and much simpler construction. The total transmission loss through the HC-PBF gas cell is demonstrated experimentally to be as low as 1.5Â dB and the time taken for gas to get into the 90-cm-cell, under the free diffusion condition, is approximately 11Â min. Combining the HC-PBF gas cell with a tunable fiber laser, an all-fiber gas sensing system is developed. The properties of the proposed system are demonstrated experimentally by detection of carbon monoxide (CO) and acetylene (C2H2). Approximately linear relationships between the system responses and the concentrations of the detected gases are experimentally demonstrated. The minimal detectable concentration of CO of 300Â ppm and C2H2 of 5Â ppm are also achieved respectively by the experiments.View full textDownload full textKeywordsgas sensing, hollow-core photonic bandgap fiber, tunable fiber laserRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10739149.2010.537718
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机译：提出了一种以空心光子带隙光纤（HC-PBF）为气室的全光纤紧凑型气体传感系统。与目前报道的微结构光纤气室相比，此处提出的HC-PBF气室具有相对较低的传输损耗和更简单的构造。通过HC-PBF气室的总传输损耗经实验证明低至1.5 dB，在自由扩散条件下，气体进入90-cm气室所花费的时间约为11分钟。将HC-PBF气室与可调光纤激光器相结合，开发了全光纤气体传感系统。通过检测一氧化碳（CO）和乙炔（C 2 H 2 ），实验证明了该系统的性能。实验证明了系统响应与所检测气体浓度之间的近似线性关系。实验还分别实现了300 ppm的CO和5 ppm的C 2 H 2 的最低可检测浓度。查看全文下载全文关键字气体传感，空心光子带隙光纤，可调谐光纤激光器，相关的变量add add_config = {ui_cobrand：“泰勒和弗朗西斯在线”，servicescompact：“ citeulike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，pubid：“ ra- 4dff56cd6bb1830b“};添加到候选列表链接永久链接http://dx.doi.org/10.1080/10739149.2010.537718
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