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Challenges of 40/100 Gbps and higher-rate deployments over long-haul transport networks

机译:远程传输网络上40/100 Gbps和更高速率部署的挑战

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The 40/100 Gbps solutions are finally mature for WDM transmission on legacy system and fiber infrastructure of incumbent carriers, which want to upgrade their core and metropolitan transport networks beyond 10 Gbps. One technology, based on the combination of PM-QPSK modulation format, coherent detection and digital signal processing, has solved the dilemma of ultra high bit rate transmission over PMD-limited fiber infrastructure, which has postponed during 10 years 40/100 Gbps deployments. But already, in the R&D laboratories, people start to prepare the next generation of long-distance WDM systems operating at 400 Gbps and 1 Tbps per wavelength. The challenges of 40/100 Gbps deployments on existing system and fiber infrastructure are discussed here, while the most efficient economical conditions for their introduction are determined. The different options for 400 Gbps and 1 Tbps WDM transmissions are compared, while the technical requirements which would allow transporting 50 Tbps overall capacity on more than 1500 km are introduced. The potential consequences of this unbelievable increase of the data rate over the operation of metropolitan and core transport networks are also given, whereas solutions to manage them while increasing the flexibility of these networks are proposed.
机译:40/100 Gbps解决方案终于成熟,可以在原有系统和现有运营商的光纤基础设施上进行WDM传输,这些运营商希望将其核心和城域传输网络升级到10 Gbps以上。一种将PM-QPSK调制格式,相干检测和数字信号处理相结合的技术,解决了PMD受限光纤基础设施上超高比特率传输的难题,该难题已在10年内推迟了40/100 Gbps的部署。但是,已经在研发实验室中,人们开始准备以400 Gbps和每个波长1 Tbps的速度运行的下一代长距离WDM系统。本文讨论了在现有系统和光纤基础架构上40/100 Gbps部署所面临的挑战,同时确定了引入它们的最有效的经济条件。比较了400 Gbps和1 Tbps WDM传输的不同选项,同时介绍了允许在1500公里以上传输50 Tbps整体容量的技术要求。还给出了在城域和核心传输网络的运行中数据速率令人难以置信的增长的潜在后果,同时提出了在增加这些网络灵活性的同时管理它们的解决方案。

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