PON(无源光网络)中突发式长发光干扰是异常上行光信号干扰的一种, 由于其故障发生的随机性以及持续时间的瞬间性, 使得故障难以定位。文章针对PON ONU(光网络单元)突发干扰问题, 描述了突发长发光的几种表现与可能原因, 总结了典型的防护方法, 并对比了几种方法的优缺点; 对定位故障ONU的方法进行了探讨, 给出了彻底消除故障的方法。

Burst rogue ONU is one type of the upstream uncontrolled optical signal interference in the PON system, which is difficult to locate because of the randomness and the duration of the fault. This paper describes the behaviors and possible causes of burst interference and summarizes the typical protection methods. Then several typical protection methods to the burst type always-on faults are compared. Furthermore, several methods to locate the burst rogue ONU are discussed. Finally, a method of eliminating faults is introduced.