基于OTN的10Gbit/s单跨段超长距传输性能研究

Research on Performance of 10Gbit/s Single-span Ultra-long-haul Transmission Based on Optical Transport Network

基于光传送网OTN的10Gbit/s长距离传输作为当前通信网中的关键技术之一,已经成为研究热点。为了节约传输成本,适应大规模、大跨度的组网模式,总线路长度达数千千米的超长距传输技术在当前传送网中的需求越来越大。本文主要通过对铁路光传送网单跨段160km的传输性能进行试验与分析,为整个光传送网络的单跨段超长距传输提供理论依据,并为实现多跨段n×160km提供技术支撑。通过搭建与铁路光传送网相吻合的实际测试环境,在不使用拉曼放大器的基础上分析铁路光传送网中3个关键技术存在的问题,得到实现单跨段超长距传输在整个光传送网络OTN应用中存在的限制条件,并提出有效的解决方法,最大程度提高超长距的传输距离。

As one of the key technologies in the current communication network, the 10Gbit/s long-haul transmission based on the optical transport network（OTN） has become the research focus of the current communication network. In order to save transmission costs and to adapt to the large-scale, large-span networking mode, the demand of ultra-long-haul transmission of the total length up to several thousands km is growing. In this paper,by testing and analyzing the performance of 160km single span OTN-based transmission,it was found the theoretical basis of single-span ultra-long haul transmission of the entire optical transport network and the tech- nical support for realization of transmission over multi-spans n 5〈 160km. Through constructing the test envi- ronment in match with the actual railway OTN environment and without using the Raman amplifier, the exist ing problems of the three key technologies of railway OTNs were analyzed so as to get to know the restrictions of single span ultra-long-haul transmission in OTN applications, propose corresponding effective solutions and maximize the ultra-long haul transmission distance.