具有实时修复功能的光纤微弯传感器研究

A Fiber Optic Microbend Sensor with Real Time Repairing Functions

针对光纤微弯传感器在强扰动信号作用下,因传感光纤弯曲半径小于极限值,致使光纤受损及传感器失效的问题,实验采用自制的短波光固化剂,通过将其封装至已预置有传感光纤的高聚物套管中,利用He-Ne激光器和短波LED分别作为检测和修复光源,研制了一种既能在线自诊断传感器健康状况,同时又能对受损光纤进行实时修复的光纤微弯传感器。实验结果表明:该传感器具有修复时间短、修复效果好等特点。

The fiber optic microbend sensor under strong signal will bring about the fiber ruptures for its bending radius exceeds extremum, and the sensor will invalidate. To solve this problem, the experiment put the short-wave light curing adhesive into the hollow-center high polymer cannula embodied the optic fiber, and utilized He-Ne laser and short-wave LED as detection and repairing lamp-house. The fiber optic microbend sensor with self-diagnosing and real time repairing functions was designed. Experimental results showed this sensor has little repairing time, good repairing effect.