基于切趾光纤光栅阵列的温度传感系统设计

Design of Temperature Sensing System Based on Apodizing FBG Array

研究采用二次曝光切趾技术制做了高反射率并具有高边模抑制比的光纤光栅(FBG)。利用虚拟仪器技术设计了此切趾光纤光栅温度传感阵列系统,有效地扩大了系统的容量并消除由反射旁瓣所带来的信道串扰问题,可实现对电力、油井系统等的温度分布的多点实时监测。此设计为高容量温度应力传感以及密集波分复用系统的实现提供了有益的参考。

By means of two-exposure apodizing process which had been further researched, the FBG with high reflectivity and high sdelobe suppression rate was fabricated. And then, based on the apodizing FBG, a new design of the monitoring temperature sensing array system was advanced using virtual instrument. In the system, the capacity could be enlarged and also the problem of sensing channel crosstalk caused by FBG sidelobe was able to be eliminated. Thus, the design proposed was demostrated to be an effective way in multi-point real-time temperature monitoring cases, such as electric power and petroleum systems. The research provided a good referrence in realizing the high capacity temperature＆strain sensing system and DWDM system.