1550nm EDFA及其应用

Fatigue Mechanisms of High Strength Silica Based Optical Fibers

简要介绍掺铒光纤放大器（ＥＤＦＡ）的特点和性能、工作原理、用途、超长无中继距离计算方法及其实例计算。

In this paper, the author uses experimentally measured crack growth data for silica glass and a fracture mechanics model for delayed failure to predict the fatigue behavior of high strength silica based optical fiber. The results show that the fatigue behavior observed from high strength silica based optical fibers at room temperature in humid conditions can be described by the fracture mechanica approach. The key to properly interpreting the fatigue of high strength optical fibers is the application of a fracture rate law in which the crack extension rate increases exponentially with applied stress. The fracture mechanic approach to high strength optical fiber fatigue can be provided for identifying additional fatigue mechanisms that may control fiber failure in more critical fatigue environments.