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。

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.