Sensors 2009, 9(1), 490-502; doi:10.3390/s90100490
Article

Multi-Line Fit Model for the Detection of Methane at ν2 + 2ν3 Band using Hollow-Core Photonic Bandgap Fibres

1,* email, 1email, 1email, 2email and 1email
Received: 25 November 2008; in revised form: 30 December 2008 / Accepted: 12 January 2009 / Published: 14 January 2009
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Hollow-core photonic bandgap fibres (HC-PBFs) have emerged as a novel technology in the field of gas sensing. The long interaction pathlengths achievable with these fibres are especially advantageous for the detection of weakly absorbing gases. In this work, we demonstrate the good performance of a HC-PBF in the detection of the ν2 + 2ν3 band of methane, at 1.3 μm. The Q-branch manifold, at 1331.55 nm, is targeted for concentration monitoring purposes. A computationally optimized multi-line model is used to fit the Q-branch. Using this model, a detection limit of 98 ppmv (parts per million by volume) is estimated.
Keywords: Gas sensing; Fibre optic sensors; Microstructure devices; Absorption spectroscopy; Hollow-Core Photonic Bandgap Fibres
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MDPI and ACS Style

Cubillas, A.M.; Lazaro, J.M.; Conde, O.M.; Petrovich, M.N.; Lopez-Higuera, J.M. Multi-Line Fit Model for the Detection of Methane at ν2 + 2ν3 Band using Hollow-Core Photonic Bandgap Fibres. Sensors 2009, 9, 490-502.

AMA Style

Cubillas AM, Lazaro JM, Conde OM, Petrovich MN, Lopez-Higuera JM. Multi-Line Fit Model for the Detection of Methane at ν2 + 2ν3 Band using Hollow-Core Photonic Bandgap Fibres. Sensors. 2009; 9(1):490-502.

Chicago/Turabian Style

Cubillas, Ana M.; Lazaro, Jose M.; Conde, Olga M.; Petrovich, Marco N.; Lopez-Higuera, Jose M. 2009. "Multi-Line Fit Model for the Detection of Methane at ν2 + 2ν3 Band using Hollow-Core Photonic Bandgap Fibres." Sensors 9, no. 1: 490-502.

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