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本发明涉及光纤传感领域的测量技术,为提供结构简单、插入损耗小、精度高、无需在光纤上刻蚀光栅的传感器,而且该传感器能够消除外界温度的交叉影响,可以提高检测精度。为此,本发明采用的技术方案是,光学的弯曲曲率测试方法及传感器,包括下列步骤:(1)测量单根纤芯的弯曲特性:监测干涉谱峰值随弯曲曲率变化而变化的情况;(2)测量单根纤芯的温度特性;(3)利用两根纤芯进行弯曲特性的检测:(4)计算弯曲曲率本发明主要应用于曲率测量。
The invention relates to the measurement technology in the field of optical fiber sensing, and provides the sensor with simple structure, small insertion loss and high precision without grating on the optical fiber, and can eliminate the cross effect of outside temperature and improve the detection precision. Therefore, the technical scheme adopted by the invention is that the optical bending curvature test method and the sensor comprise the following steps: (1) measuring the bending characteristic of the single core: monitoring the change of the peak of the interference spectrum according to the bending curvature; 2) Measuring the temperature characteristics of a single core; (3) Testing the bending characteristics by using two cores: (4) Calculating the Curvature of Curvature The present invention is mainly applied to the measurement of curvatures.