生存光传输网络的交叉连接模块结构

基于波分复用技术的光传输网络在克服当前网络容量瓶颈的同时又面临网络生存的挑战,它必须快速、有效地恢复因网络故障而受损的工作光路。该文分析了四种基本网络恢复技术以及与之相对应的OXC节点模块结构,即:保留光纤链路方式、保留波长链路方式、保留波长路径方式以及动态波长路径方式;并从光连接恢复时间、网络资源效率和控制复杂度三个侧面比较了不同OXC结构对于网络生存的影响。

Modular Structure of OXC in Survivable Optical Transport Network

WDM-based optical transport network must face with the challenge of survivability while it is able to remove the bottleneck of capacity in current transport network.It is necessary to restore the affected working light path rapidly and effectively.This paper presents four types of modular structures of OXC including link-based with reserved fibers,link -based with reserved wavelengths,path -based with reserved wavelength and path -based with spare wavelength,each of which corresponds to one particular network protection respectively.Eventually the effect on network survivability made by different OXC is compared using the metrics of light-connection restoration time ,efficiency of network resource and controlling complexity.