ROADM技术在干线光传输网络中的组网应用及演进探讨

Application and Evolution of ROADM Technology in Backbone Optical Transmission Network

通信网络的传送带宽持续保持高速增长态势,为了确保传输网能够灵活的调度、稳定的运行,运营商在搭建网络的过程中,对底层波分网络的波长灵活交换性能提出了更高的要求。ROADM能够实现基于波长和路由的选择和智能化调度,使得在网络需要重新规划或者新增开通业务时,能够快速响应,提高整个网络的效率。近年来,国内运营商已在国家骨干网中大规模部署ROADM。该文对ROADM技术特点进行了描述并阐述了其组网应用案例,最后对其未来的技术演进趋势进行探讨。

The transmission bandwidth of communication network keeps increasing at a high speed.In order to ensure the flexible scheduling and stable operation of the transmission network,operators put forward higher requirements for the flexible wavelength switching performance in the process of building the WDM network.ROADM can achieve the selection and intelligent scheduling based on wavelength and routing,which enables the network to respond quickly when it needs to replan or deploy new services,and improves the efficiency of the whole network.In recent years,domestic operators have deployed ROADM on a large scale in the national backbone network.In this paper,the characteristics of ROADM technology are described,and its application cases are introduced.Finally,the future trend of technology evolution of ROADM is discussed.