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Methane sensing at 1300 nm band with a hollow core photonic bandgap fiber as gas cell

By A.M. Cubillas, J.M. Lazaro, M. Silva-Lopez, O.M. Conde, M.N. Petrovich and J.M. López-Higuera


The feasibility of employing a hollow-core photonic bandgap fibre (HC-PBF) to measure methane concentrations below its lower explosive limit is assessed. Using a 5.6 m-long HC-PBF as gas cell, the spectrum of methane at v2 + 2v3 band at 1300 nm has been recorded and the Q-branch at 1331.55 nm selected for sensing purposes. A minimum detectivity of 49 ppmv-m for the system configuration is estimated

Topics: QC, TK
Year: 2008
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Provided by: e-Prints Soton
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