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16 May 2008 Methane sensing using multiple-coupling gaps in hollow-core photonic bandgap fibers
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70044U (2008) https://doi.org/10.1117/12.786151
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
Abstract
Gas detection and gas sensing based on hollow core photonic bandgap fiber (HC-PBF) is a very promising technique due to the long interaction light-gas lengths that are achievable. However, long path-lengths also imply higher gas filling times of the hollow fiber and higher response times of the detection systems what can constitute a serious practical inconvenience. In this paper, the high sensitivity is maintained but the sensor response time is reduced by using multiple-coupling fiber gaps. The results and conclusions extracted from a systematic experimental study (comparing the spectra and filling time of different HC-PBF lengths and different number of coupling gaps) are presented and discussed. Finally, the maximum number of gaps allowed in the system is modelled.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. M. Lazaro, A. M. Cubillas, M. Silva-Lopez, O. M. Conde, M. Petrovich, and J. M. Lopez-Higuera "Methane sensing using multiple-coupling gaps in hollow-core photonic bandgap fibers", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044U (16 May 2008); https://doi.org/10.1117/12.786151
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