Multi-Line Fit Model for the Detection of Methane at ν(2) + 2ν(3) Band using Hollow-Core Photonic Bandgap Fibres.

Multi-Line Fit Model for the Detection of Methane at ν(2) + 2ν(3) Band using Hollow-Core Photonic Bandgap Fibres.
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DOI:
10.3390/s90100490
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发表时间:
2009
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Lopez-Higuera JM
Lopez-Higuera JM
中科院分区:
其他
文献类型:
--
作者:
Cubillas AM;Lazaro JM;Conde OM;Petrovich MN;Lopez-Higuera JM

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空芯光子带隙光纤(HC-PBF)已成为气体传感领域的一项新技术。用这些光纤实现的长相互作用路径长度对于弱吸收气体的检测特别有利。在这项工作中,我们证明了HC-PBF在1.3 μm甲烷的ν2 + 2ν3带的检测中具有良好的性能。1331.55 nm处的Q分支歧管用于浓度监测。计算优化的多线模型用于拟合Q分支。使用该模型,估计检测限为98 ppmv(百万分之一体积)。
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.
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