基于阵列波导光栅的组播交换网络

AWG-based multicast network for optical switching

目前的光组播交换机设计方案存在源器件数目较大、路由算法时间复杂度较高的问题,使得系统的可扩展性较差。针对这些问题,提出了一种基于阵列波导光栅(AWG)的无阻塞三级复制网络。通过级联两个这样的复制网络,实现了一个有源器件数为O(N)的WDM组播交换机,其路由与波长分配时间复杂度可比拟于点到点单播交换网络。

In the paper, three-stage AWG-based copy networks for optical multicast switching are examined with regard to properties of scalability. It shows that a cascaded combination of an AWG-based non-blocking copy network and a point-to-point switching network can synthesize an WDM multicast network, in which the number of active components is on the order of 0 （N）, and the time complexity of the routing algorithm is comparable to that of a unicast switch.