利用l波段ASE源和光纤光栅进行无源光接入网监控

N. F. Naim, M. Ab-Rahman, A. Bakar
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引用次数: 4

摘要

无源光接入网越来越密集,监测和故障定位变得越来越重要。本文介绍了利用时分复用(TDM)以太网无源光网络(EPON)中的l波段放大自发发射(ASE)进行光网络监测和故障定位的方法。在树状结构的光纤网络中,在光网络单元(ONU)之前的每根光纤上放置一个具有不同中心波长的光纤布拉格光栅。光纤布拉格光栅(FBG)反射的明显信号作为分支标识符。用光功率计作为接收器来监测反射信号。系统将自动切换到光时域反射计(OTDR),如果它检测到任何击穿的跌落光纤。该系统能够监测多达64个onu,最小误码率(BER)为10-9。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Passive optical access network monitoring using L-band ASE source with fiber Bragg grating
Passive optical access network are becoming denser thus monitoring and fault localization are becoming more crucial. This paper presents optical network monitoring and fault localization using the L-band amplified spontaneous emission (ASE) in Time Division Multiplexing (TDM) Ethernet Passive Optical Network (EPON). A fiber Bragg grating with a distinct center wavelength is placed at each drop fiber before the optical network unit (ONU) in the tree-structured network. The distinct reflected signal from the fiber Bragg grating (FBG) acts as the branch identifier. An optical power meter is used as the receiver to monitor the reflected signal. The system will automatically switch to Optical Time Domain Reflectometer (OTDR) if it detects any breakdown of the drop fiber. This system is capable to monitor up to 64 ONUs with minimum bit error rate (BER) of 10-9.
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