为了探究高湿环境对光纤动态疲劳的影响, 实验选取多组光纤, 分别在高湿和一般环境下采用两点弯曲法测量光纤的动态疲劳。通过对动态疲劳曲线和实验数据进行分析发现, 在高湿环境下, 光纤所能承受的断裂应力会下降, 且测试时的应力速率越高, 断裂应力下降越明显, 进而影响光纤动态疲劳参数Nd值。

In order to investigate the effects of high humidity on the dynamic fatigue of optical fibers, we select multiple groups of fibers in experiments and measure their dynamic fatigue in high humidity and normal environments by the two-point bending method. On the basis of analyzing the dynamic fatigue curves and the experimental data, we find that the fracture stress that fibers can endure is reduced in a high-humidity environment and that the higher the stress rate, the more distinct the fracture stress is decreased, thus affecting the Nd values of the fiber dynamic fatigue parameters.