公开(公告)号：US20150229389A1

公开(公告)日：2015-08-13

申请号：US14620340

申请日：2015-02-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Chang KIM ,  Hark YOO ,  Geun-Yong KIM ,  Dong-Soo LEE ,  Hee-Do KIM

IPC: H04B10/073 ,  H04J14/02

CPC classification number: H04B10/073 ,  H04B10/0771 ,  H04B10/0773 ,  H04J14/02

Abstract: Disclosed herein is an apparatus and method for detecting an optical line fault in a Passive Optical Network (PON). The apparatus includes an optical distribution unit configured to, when a multiplexed signal of a downstream light signal and a monitoring light signal is input, distribute the multiplexed signal to an Optical Network Unit (ONU) of a first optical path and to a second optical path. An optical layer management unit is installed in the second optical path and is configured to set a time at which the monitoring light signal of the multiplexed signal provided to the second optical path is received to a starting time of monitoring light measurement, compare a monitoring light signal reflected and returned from the ONU with a signal pattern obtained when no fault occurs, and then determine whether a fault has occurred in a distribution network.

Abstract translation: 本文公开了一种用于检测无源光网络（PON）中的光线路故障的装置和方法。 该装置包括：光分配单元，被配置为当下行光信号和监视光信号的复用信号被输入时，将复用的信号分配到第一光路的光网络单元（ONU）和第二光路 。 光层管理单元安装在第二光路中，并且被配置为设置接收到提供给第二光路的复用信号的监视光信号到监视光测量的开始时间的时间，比较监视光 在没有发生故障的情况下用ONU获得的信号从ONU反射并返回，然后确定配电网络中是否发生故障。