全光网络技术发展与演进

The development and evolution of all-optical network

基于网络业务发展趋势和全光网发展现状,分析了全光网的架构和关键特征,提出了未来全光网的发展方向,包括自动化、智能化、高可靠和城域延伸趋势;同时,研究了支撑全光网演进的基础关键技术,包括光层调度技术、光层数字化技术和电层调度技术,其中光电协同运作可以充分满足低时延、大带宽和安全可靠的网络需求。随着WSS成本的快速显著降低,ROADM将从骨干网络逐渐走向城域边缘网络,实现全光网的广泛部署。

Based on the development trend of network service and the development status of all-optical network,this paper analyzes the architecture and key feature of all-optical network,and proposes the future development direction of all-optical network,including automation,intelligence,high reliability and metro extension.At the same time,the basic key technologies supporting the evolution of all-optical network are studied,including optical-layer scheduling,optical-layer digitalization,and electrical-layer scheduling.Optical-electrical collaborative operation can fully meet the network requirements of low latency,large bandwidth and high reliability.With the rapid and significant reduction of WSS cost,ROADM will gradually evolve from the backbone network to the metro edge network,supporting the wide deployment of all-optical network.