随着光通信设备在不同地区、不同环境下的广泛部署, 工程中出现了多起由于机房环境不合格导致的光模块硫化腐蚀失效事件, 客户对光模块在含硫环境下工作寿命预估的需求越来越强烈。文章提出了一种应用加速硫化腐蚀对光模块内部易腐蚀组件(电阻和磁珠)建立寿命预估模型的方法, 该方法以威布尔分布作为基准失效函数, 以相同环境应力或不同环境应力作为协变量, 利用电阻和磁珠加速硫化腐蚀试验的失效率数据进行模型参数估计, 对寿命预估模型进行了研究。研究结果表明, 该加速试验结果与工程失效数据吻合, 该寿命预估模型能够满足工程中光模块寿命的预估需求。

With the extensive deployment of optical communication equipment in different regions and environments, there are many failures of optical module due to sulfurization corrosion caused by the unqualified environment of the equipment room. Therefore, the demand for the work life prediction of optical module in sulfur-containing environment is rapidly increasing. In this paper, we propose a method to establish a life prediction model for the resistors and beads inside the optical module that are corroded in the accelerated corrosion condition. In this method, Weibull distribution is used as the reference failure function, and the same environmental stress or different environmental stress is used as the covariate. Then the parameters of prediction model are analyzed by using the failure rate data of resistors and beads in the accelerated test. It shows that the accelerated test results are consistent with the failure data in the field. Therefore, the model can meet the needs of life prediction of optical modules at the communication office.