微纳色散补偿光纤光栅的折射率传感特性研究
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光纤分布式油气管线检测技术研究基金资助项目(2010JS0371.3);光纤地震勘探关键技术研究基金资助项目(15JS096);长输油气管线管纤光栅温度压力及应变传感检测系统基金资助项目(2009ZDKG42);西安石油大学优秀硕士学位论文培育基金资助项目(2015yp140813)

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Study on the Refractive Index Sensing Property of Micro/Nano Dispersion Compensation Fiber Bragg Grating
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    摘要:

    采用相位掩模法,在未经载氢处理的色散补偿光纤上刻写出多个满足相位匹配条件的光纤布喇格光栅。经过化学腐蚀法处理,分别制作了直径为20 μm、17.5 μm的微纳光纤光栅,实验研究了其布喇格波长与折射率的变化关系。结果表明,在实验溶液折射率测量范围内,传感器高阶模谐振波长与溶液折射率之间均呈现良好的拟合关系,折射率线性拟合灵敏度最高为28.6 nm/RIU。此外,实验发现满足光纤光栅相位匹配条件的模式阶次越高,传感器对周围溶液变化感应能力越强。

    Abstract:

    Using the phase mask technique, several fibers Bragg gratings(FBGs) satisfying phase matching conditionsare inscribed in a piece of dispersion compensation fiber without hydrogen loading. Two microfiber FBGs with diameters of 20 μm and 17.5 μm respectively are fabricated after the chemical etching process. The relationship between the Bragg wavelength and the refractive index is studied experimentally. The results show that there is a good fitting relationship between the higher-order mode resonance wavelength of the sensor and the refractive index of the solution in the range of refractive index measurement of the experiment solution. The highest sensitivity of linear fitting of refractive index is up to 28.6 nm/RIU. In addition, the experiment results show that the higher the order of the mode satisfying the phase matching condition of the fiber gating, the stronger the sensing ability of the sensor to the surrounding solution.

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贾振安, 段维维, 刘鑫, 刘颖刚, 张静乐.微纳色散补偿光纤光栅的折射率传感特性研究[J].压电与声光,2017,39(6):886-888. JIA Zhen’an, DUAN Weiwei, LIU Xin, LIU Yinggang, ZHANG Jingle. Study on the Refractive Index Sensing Property of Micro/Nano Dispersion Compensation Fiber Bragg Grating[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2017-11-24
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