| 基于高阶模干涉的双参量同时测量传感器的实验研究 |
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| 引用本文： | 陈松,杨秀峰,童峥嵘,曹晔.基于高阶模干涉的双参量同时测量传感器的实验研究[J].天津理工大学学报,2012,28(3):34-37. |
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| 作者姓名： | 陈松 杨秀峰 童峥嵘 曹晔 |
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| 作者单位： | 天津理工大学计算机与通信工程学院 天津市薄膜电子与通信器件重点实验室,天津,300384 |
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| 摘 要： | 提出一种单模-多模-单模(SMS)与光纤布拉格光栅(FBG)级联的传感结构,利用了多模光纤内的高阶模干涉原理实现传感测量.本文采用了同长度芯径分别为50μm和60μm的多模光纤.实验结果显示,在SMS结构中,芯径50 μm和60μm的温度灵敏度分别为0.095nm/℃和0.127nm/℃,采用大芯径多模光纤略有提高SMS结构的温度灵敏度;折射率灵敏度分别为61.96nm/RIU和128.11nm/RIU,采用大芯径多模光纤大大提高了SMS结构的折射率灵敏度,该传感器能够用于温度和折射率的同时测量.
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| 关 键 词： | 光纤布拉格光栅 多模干涉 温度 折射率 同时测量 |
Experimental research on sensor for simultaneous measurement of dual parameters based on interference of higher order modes |
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| CHEN Song
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YANG Xiu-feng
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TONG Zheng-rong
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CAO Ye.Experimental research on sensor for simultaneous measurement of dual parameters based on interference of higher order modes[J].Journal of Tianjin University of Technology,2012,28(3):34-37. |
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| Authors: | CHEN Song YANG Xiu-feng TONG Zheng-rong CAO Ye |
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| Institution: | (School of Computer and Communications Engineering,Tianjin Key Laboratory of Film Electronic and Communication Devices,Tianjin University of Technology,Tianjin 300384,China) |
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| Abstract: | A sensing structure of single-multi-single(SMS) and fiber Bragg grating(FBG) cascaded is proposed using the principle of interference of higher order modes to achieve sensor measuring.Two kinds of multimode fibers with the core diameter of 50 μm and 60 μm are used with the same length.Experimental results show that the temperature sensitivities of 50 μm and 60 μm are 0.095 nm/℃ and 0.127 nm/℃ in SMS structure.The temperature sensitivity of SMS structure has a slight increase by using large core diameter multimode fiber.The refractive index sensitivities of 50 μm and 60 μm are 61.96 nm/RIU and 128.11 nm/RIU in SMS structure.The refractive index sensitivity of SMS structure has a great increase by using large core diameter multimode fiber.The sensor can be used for the simultaneous measurement of temperature and refractive index. |
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| Keywords: | FBG multimode interference temperature refractive index simultaneous measurement |
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