光纤寿命与疲劳参数的关系研究

摘要

自光纤诞生之日起,光纤寿命一直是人们关注的问题.然而光纤寿命的理论复杂,较难理解.光纤寿命和疲劳参数之间的关系缺乏试验数据.介绍了光纤寿命的数学理论模型及其影响因素,并详细介绍了动态疲劳参数nd和静态疲劳参数ns的测试方法.采用不同的测试方法测试了光纤疲劳参数n值,通过设计试验验证了nd与ns之间的关系,以及疲劳参数与光纤寿命之间的关系.试验结果证明:疲劳参数越大,光纤寿命越长.%Optical fibre lifetime has been concerned since the invention of optical fibers. However, the lifetime theory is complex and not easy to understand. The relationship between optical fibre lifetime and optical fibre fatigue parameter n is lack of experimental data. This paper outlines the mathematical model of fiber lifetime and its effects. Then introduces the detailed test methods of dynamic fatigue parameters ndand static fatigue parameter ns. Through measurement of n values based on different methods and experiment design, the relationship between ndand ns, as well as the relationship between fatigue parameters and fiber lifetime have been studied. The experimental results show that optical fibre has higher fatigue parameters can get a higher fiber lifetime.