钢管套装光纤Bragg光栅温度传感器  

Fiber Bragg grating temperature sensor with double steel pipe suits

作　　者：薛泽利[1] 朱雪彤[1] 刘少华[1] 

机构地区：[1]佳木斯大学理学院,黑龙江佳木斯154007

出　　处：《光学技术》2016年第1期75-77,共3页Optical Technique

基　　金：佳木斯大学科学技术校级面上项目(L2014-019)

摘　　要：为避免外加应力应变对温度传感器光栅的影响,提出了一种利用双钢管套装来隔离外加应力应变的方法。传感器两端留有尾纤,可实现多个传感器波分复用。为了防止因温度和外加应力应变所导致的套管形变而产生光纤拉伸,封装在两个钢管中的预留光纤长度应大于0.69mm。实验结果表明,温度在0℃~80℃之间变化时,灵敏度达到10pm/℃,线性度较好,可实现对环境温度的高精度连续监测。To avoid the harmful influence causing by the applied stress-strain on the temperature sensor grating,a new method by using double casing steel pipes to insulate the applied stress-strain is adopted.There are two pigtails on the both ends of the new sensor.The two pigtails can implement the wavelength division multiplex（WDM）.The length（lf）of reserved optical fiber packaged in two steel pipes is greater than 0.69 mm.It can prevent the fiber stretching,which causing by the deformation of steel pipes for different temperatures and applied stress-strain.The results show that the sensitivity is 10pm/℃in the temperature range from 0to 80℃.The linearity is good.Continuous monitoring is achieved with high accuracy to the ambient temperature.

关 键 词：光纤BRAGG光栅 温度传感器 外加应力应变 灵敏度 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]