基于单模光纤纤锥耦合的温度传感特性研究  

Study on temperature sensing characteristics of fused-tapered single-mode-fiber coupler

作　　者：余有龙[1] 刘新宇 陈雪峰[2] 曹雪[3] 于秀娟[2] 张金涛[2] YU Youlong;LIU Xinyu;CHEN Xuefeng;CAO Xue;YU Xiujuan;ZHANG Jintao(School of Instrument Science and Opto-Electronics Engineering,Hefei University of Technology,Hefei 230009,China;Institute of Fiber Optics,Heilongjiang University,Harbin 150080,China;School of Physics and Electronics,Henan University,Kaifeng 475004,China)

机构地区：[1]合肥工业大学仪器科学与光电工程学院,合肥230009 [2]黑龙江大学光纤技术研究所,哈尔滨150080 [3]河南大学物理与电子学院,开封475004

出　　处：《黑龙江大学自然科学学报》2018年第5期613-616,共4页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(61605043)

摘　　要：分析了环境温度对单模光纤耦合器纤锥、环境介质的折射率、耦合区域尺寸的影响,进而引起纤锥分光比和附加损耗的变化,并给出两者变化的理论曲线和实验结果。结果表明在一定温度范围内分光比和附加损耗对温度呈线性变化关系,增敏处理有利于拓宽纤锥分光比对温度线性响应的范围,提高灵敏度。The effects of ambient temperature on the refractive indexes of the coupling-area of fused-tapered single-mode-fiber coupler and environmental medium,and on the length of coupling region,which consequently changes the coupling ratio and extra loss of the coupler,are analyzed. Meanwhile,the theoretical curves and experimental data of the changes are displayed. It’s noticed that both the coupling ratio and extra loss,within a certain range,will vary with the temperature linearly. Packaging with more sensitive materials is beneficial to broadening the range of linear response of the coupling ratio of the fiber to the temperature,and to improving the sensor sensitivity.

关 键 词：熔锥型光纤耦合器 分光比 附加损耗 温度传感 

分 类 号：O241.82[理学—计算数学]