Gas Sensor Based on Photonic Crystal Fibres in the 2ν(3) and ν(2) + 2ν(3) Vibrational Bands of Methane.

Gas Sensor Based on Photonic Crystal Fibres in the 2ν(3) and ν(2) + 2ν(3) Vibrational Bands of Methane.
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DOI:
10.3390/s90806261
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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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在这项工作中,使用全光纤传感器在近红外(NIR)波长区域的2ν3和ν2 + 2ν3吸收波段进行甲烷检测。空心光子带隙光纤(HC-PBFs)由于其致密性、光学系统的良好可积性和与气体长相互作用的可行性而被用作气电池。在甲烷的2ν3波段进行传感,其检测极限比ν2 + 2ν3波段的检测极限高一个数量级。最后,证明了HC-PBF的填充时间取决于纤维长度和几何形状。
In this work, methane detection is performed on the 2ν3 and ν2 + 2ν3 absorption bands in the Near-Infrared (NIR) wavelength region using an all-fibre optical sensor. Hollow-core photonic bandgap fibres (HC-PBFs) are employed as gas cells due to their compactness, good integrability in optical systems and feasibility of long interaction lengths with gases. Sensing in the 2ν3 band of methane is demonstrated to achieve a detection limit one order of magnitude better than that of the ν2 + 2ν3 band. Finally, the filling time of a HC-PBF is demonstrated to be dependent on the fibre length and geometry.
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