新型快速自修复光纤传感器的设计与性能

针对光纤微弯传感器在强扰动信号作用下,因光纤受损而丧失部分或全部功能的问题,进行了关于传感器自修复的研究.该传感器采用自制的具有良好光学、机械和粘接性能的短波光固化修复剂,将其注入预置有传感光纤的柔性空心纤维中,设计了一种可以实现在线自诊断和实时自修复的双窗口(长波检测、短波修复)智能光纤微弯传感器.对修复时间、修复效果进行了实验和分析.结果表明,该传感器自修复时间短,修复后机械和光学性能良好,并能实现多点修复.

Design and Study on a New Fiber Sensor with Self-Repairing Functions

Fiber optic microbend sensors under the strong signal will bring about the fiber rupture,and the sensor will invalidate.To solve this problem,the self-repairing of the fiber optic microbend sensor was researched.A short wavelength light curing adhesive was designed.It has good optical,mechanical and adhesive performances.We put it into the hollow-center fiber embodied with fiber optical sensor.And an intelligent fiber optic microbend sensor with self-diagnosing and self-repairing functions was designed.Experimental results show this sensor has little repairing time,good repairing effect.