基于单模光纤偏芯结构的光纤干涉型高温传感器  

Fiber interference high temperature sensor based on core-offset structure of single mode fiber

作　　者：王哲[1] 张卫华[1] 应泽胜 

机构地区：[1]天津理工大学电子信息工程学院,天津300384

出　　处：《天津理工大学学报》2015年第4期9-11,38,共4页Journal of Tianjin University of Technology

基　　金：天津市青年科学基金(13JCQNJC01800);天津市高等学校校级大学生创新训练项目(X2013037)

摘　　要：利用单模光纤的偏芯结构,提出了一种光纤干涉型高温传感器.光在通过传感区域时存在纤芯模与包层模的干涉.当温度变化时,根据干涉谷对温度的敏感性,即可实现温度测量.此传感器可用于高温测量,当温度从400℃上升到750℃时,干涉谷波长变化了32.2 nm,温度灵敏度为0.092 nm/℃.Using the core-offset structure of single mode fiber, a high temperature sensor of fiber interference is proposed. When the light travels through the sensing area, the core mode and the cladding mode interfered. When the temperature changes, the measurement of temperature can be realized according to the temperature sensitivity of the interference valley. The sensor can be used for high temperature measurement. When the temperature is from 400 ℃ to 750 ℃, the wavelength shift of interference valley is 32.2 nm, and the sensitivity of temperature is 0.092 nm/℃.

关 键 词：光纤干涉 高温传感器 单模光纤偏芯结构 

分 类 号：TN253[电子电信—物理电子学]