Methane sensing using multiple-coupling gaps in hollow-core photonic bandgap fibers

Lazaro, J.M., Cubillas, A.M., Silva-Lopez, M., Conde, O.M., Petrovich, M. and López-Higuera, J.M. (2008) Methane sensing using multiple-coupling gaps in hollow-core photonic bandgap fibers. In, 19th International Conference on Optical Fibre Sensors (OFS19), Perth, Australia, 14 - 18 Apr 2008.


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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.

Item Type: Conference or Workshop Item (Paper)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 76326
Accepted Date and Publication Date:
Date Deposited: 22 Mar 2010
Last Modified: 31 Mar 2016 13:09

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