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Low-cost hybrid ROADM architectures for scalable C/DWDM metro networks

机译:适用于可扩展C / DWDM城域网的低成本混合ROADM架构

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摘要

CWDM networks have proven to be a promising first-step metro and access network architecture, offering a significant cost advantage over DWDM due to the lower cost of lasers and the filters used in CWDM modules. If demand grows beyond the capacity covered by CWDM channels, DWDM network elements can be introduced to merge CWDM and DWDM traffic at the optical layer. This ensures two advantages: reduced initial investment and scalability for deploying DWDM channels in the future. This article presents various ROADM architectures, and explores the novel optical node architecture of hybrid C/DWDM networks, consisting of CWDM, hybrid C/DWDM, and junction nodes connecting two rings. Evaluation has shown that the hybrid ROADM architecture is superior to other conventional ROADM architectures in terms of scalability and the initial cost of optical nodes and networks.
机译:CWDM网络已被证明是有希望的第一步城域网和接入网体系结构,由于DWDM激光器和CWDM模块中使用的滤波器的成本较低,因此具有比DWDM显着的成本优势。如果需求增长超出CWDM通道覆盖的容量,则可以引入DWDM网络元素以在光层合并CWDM和DWDM流量。这样可以确保两个优点:减少了初期投资,并为将来部署DWDM通道提供了可扩展性。本文介绍了各种ROADM架构,并探索了混合C / DWDM网络的新型光节点架构,该网络由CWDM,混合C / DWDM和连接两个环的结点组成。评估表明,混合ROADM架构在可伸缩性以及光节点和网络的初始成本方面优于其他常规ROADM架构。

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  • 来源
    《IEEE Communications Magazine》 |2016年第8期|153-161|共9页
  • 作者

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    Technical University of Denmark;

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  • 正文语种 eng
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