渐变型柔性空芯光纤吸收腔的气体传感特性

发布时间：2018-04-15 08:19

本文选题：空芯波导 + 气体传感　；参考：《光通信研究》2017年02期

【摘要】：设计并搭建了低温拉丝塔,以PC(聚碳酸酯)管材为预制棒制备渐变型空芯光纤基管。在基管上镀制Ag和AgI来制备柔性渐变空芯波导,该波导在3.3μm波长处具有低损耗特性。通过理论和实验探究了波导的传输特性,以甲烷作为样本气体,通过实际测量,探究了波导长度、弯曲半径和大小端入射等因素对系统特性的影响。结果表明,对于渐变型空芯波导,当光源从大端入射时能提高耦合效率,并优化系统检测极限和灵敏度;当光源从小端入射时,系统将具有更大的饱和吸收度。
[Abstract]:A low temperature wire drawing tower was designed and built, and PC (polycarbonate) pipe was used as the preform to prepare the graded hollow fiber based tube.Silver and AgI were deposited on the base tube to fabricate the flexible graded hollow waveguide, which has low loss at 3.3 渭 m wavelength.The transmission characteristics of the waveguide are investigated theoretically and experimentally. The effects of the waveguide length, bending radius and incident incident on the system characteristics are investigated by using methane as the sample gas and the actual measurement.The results show that the coupling efficiency can be improved and the detection limit and sensitivity of the system can be optimized when the light source is incident from the large end for the gradual change hollow waveguide, and the system will have greater saturation absorption when the light source is incident from the small end.
【作者单位】：复旦大学信息科学与工程学院;
【基金】：上海市自然科学基金资助项目(15ZR1404100)
【分类号】：TN253;TP212

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