M. Elmagzoub, A. .. Mohammad, R. Q. Shaddad, S. M. Idrus, S. A. Al-Gailani
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引用次数: 3
摘要
当前的无源光网络(千兆光网络(GPON)和以太网光网络(EPON))由于带宽需求的不断增长,迟早会耗尽带宽。上述和新一代PON第一阶段(NG-PON1)标准(10千兆PON (XG-PON)和10千兆以太网PON (10G-EPON))都是基于时分复用(TDM-PON)的,具有带宽限制等局限性。为了满足NG-PON第二阶段(NG-PON2)的要求,本文提出了一种与当前部署的odn (optical distribution network)兼容的、每个方向4个波长的堆叠TDM-PON架构。该架构通过在光线路终端(OLT)产生上游波长而具有无色光网络单元(onu)。在OLT上用于上游传输的四个激光二极管(LD)足以满足所有ONU的需求,而不是在每个ONU上安装LD或光发射器,这使得ONU具有无色和成本效益。在下行传输40gb /s和上行传输10gb /s的情况下,性能良好。
Current passive optical networks (PONs) (Gigabit PON (GPON) and Ethernet PON (EPON)) will run out of bandwidth sooner or later due to the ever increasing bandwidth demand. The aforementioned and the new next generation PON stage 1 (NG-PON1) standards (10 Gigabit-PON (XG-PON) and 10 Gigabit Ethernet-PON (10G-EPON)) are based on time division multiplexing (TDM-PON), which has its limitations such as limited bandwidth. In this paper, stacked TDM-PON architecture with four wavelengths for each direction, that is compatible with currently deployed optical distribution networks (ODNs), is proposed to meet the requirements of NG-PON stage 2 (NG-PON2). The proposed architecture has colorless optical network units (ONUs) by generating the upstream wavelengths at the optical line terminal (OLT). Four laser diodes (LDs) at the OLT for the upstream transmission are enough for all ONUs, instated of having LD or optical transmitter at each ONU, which makes a colorless and cost-effective ONU. A good performance is observed for 40 Gb/s downstream transmission and 10 Gb/s upstream transmission.