PON网络弱光问题分析与防护

PON网络中的弱光问题随着FTTX业务发展(远距离、大分光比应用)变得越来越严重。通过对弱光产生原因的分析,梳理了影响光功率预算的主要因素。基于EPON扩展OAM/GPON OMCI协议,通过比较标准定义与实际应用,报告了ONU光功率的检测方法以及对应的弱光故障定位策略。结合工程应用总结了弱光问题防护与解决的几种方法。

Analysis and protection of low optical power level in PON network

The problem of low optical power level in PON network is becoming more and more serious with the development of FTTX service (long distance and large optical splitting ratio). Through the analysis of the causes of the low optical power level, we analyse the main factors which affect the optical power budget. By comparing the standard definition and the practical application which based on the extended oam of EPON protocal /OMCI of GPON protocol , we also report the detection method of ONU transmit / receive optical power and the corresponding weak optical fault location strategy. Finally some protection methods and solutions of low optical power level are summarized by engineering application.