摘要
FBG传感器在现实应用中的一个主要问题是温度和应力的交叉敏感问题,本文介绍了光纤双光栅同步测量温度和应力的原理,设计了一个光纤双光栅温度、应变测量实验系统,对光纤双光栅的温度和应变传感特性进行了初步的实验研究,实验结果很好地反映了光纤双光栅的温度和应变灵敏特征,也表明光纤双光栅具有多参量同时测量的能力。
In applications of fiber bragg grating sensor(FBG) , it is a serious problem that the wavelength shift of FBGs depends not only on the changes of strain but also on temperature. The principle of synchronous measuring of temperature and strain using dual wavelength fiber Bragg grating is introduced. Results show that the temperature coefficients of the dual wavelength fiber bragg grating sensor system reach 11.85 pm/℃ and 12.12 pm/℃, respectively, and the strain coefficient reach 0.893 pm/μεand 0.915 pm/με, respectively.
出处
《宁波大学学报(理工版)》
CAS
2003年第1期49-52,共4页
Journal of Ningbo University:Natural Science and Engineering Edition
基金
宁波市重点博士基金(01J201201-04)