基于光频域反射原理的PON监测方案研究

摘要

就PON系统而言,传统的OTDR监测方法不能从中心局端同时监测所有的分布光纤,而且当分布光纤长度相近时无法分辨故障发生在哪条光纤.针对上述问题,提出了基于光频域反射原理的PON监测方案.通过对关键技术的讨论以及对监测系统仿真实验,证明了该方案可以对PON网络所有分布光纤同时实现快速有效监测,缩短了故障判断时间,提高了运维的效率,降低了运维成本.%For PON system, the traditional OTDR monitoring method can not monitor all the fibers from central office. Besides, when the lengths of the fibers are nearly the same, it is difficult to distinguish in which fiber the fault happens. For these reasons, this paper presents a PON monitoring scheme based on OFDR theory. Discussion on key technologies and monitoring system emulation experiment prove that this scheme can monitor PON system efficiently, decrease the down time, increase the maintenance efficiency, and reduce the OPEX.