基于硅基波导、十字状波导交叉和基于波导微环的光交换器件的损耗特性,对 Torus结构的芯片上光互连网络建立了损耗模型,利用该模型来对芯片上光互连网络进行光器件级、 光路由器级和网络级的损耗特性分析,同时建立芯片上光互连网络损耗自动分析系统。依据该系统可 以得到不同网络规模下的最大损耗,并分别分析了基于crossbar、cygnus和crux路由器的torus结构网 络的损耗特性。可以得到,传输损耗随着网络规模的扩展而增加,最小的传输损耗出现在M=N时。 同时,可以得到采用Crux路由器构成的芯片上光互连网络的传输损耗最小,小于Cygnus构成的芯片上光互连网络约5 dB。

Based on the loss parameters of silicon waveguide, waveguide crossing and microresonator based optical switching elements, a general analytical model to study the transmission loss in Torus-based optical network on chip (ONoC) was proposed. The model was used to analyze insertion loss at device level, router level and network level. Meanwhile, the automatic analysis system was established. The maximal insertion loss in different network scales was obtained from the analysis system. The maximal insertion loss of the Torus-based ONoC using the Crossbar, Cygnus and Crux was also analyzed. From the numerical investigation, it can be obtained that the insertion loss enlarges with the increasing network scale and the minimum insertion loss is presented at condition of M=N. Meanwhile, compared with the Crossbar and Cygnus, the insertion loss of the ONoC using Crux is minimum. The insertion loss of the ONoC using Crux is less than the insertion loss of the ONoC using Cygnus about 5 dB.