光片上网络MRR故障检测方法研究

Research of MRR fault detection in photonic network-on-chip

光片上网络(photonic network-on-chip,PNoC)是下一代片上网络互联的趋势和典范,MRR(microring resonator)是PNoC中的关键器件,然而由于制造缺陷,且MRR对温度波动高度敏感,MRR极易发生故障,如何检测MRR故障是十分重要并亟待解决的问题。针对该问题提出了一种基于故障检测图的MRR故障检测方法,将n端口的光路由器建模为完全加权有向图并且建立MRR故障模型,通过完全加权有向图与故障模拟,确定基于MRR故障模型和故障检测图的故障检测方法。实验结果证明,在单故障和双故障模拟下,该方法均能够获得满意的故障覆盖率。

Photonic network-on-chip（ PNoC） has been a new trend and example for next generation multi-processor system.Microring resonator（ MRR） is the key component in PNoC.However,MRRs are sensitive to environmental temperature and prone to be faulty.Therefore,how to detect a MRR fault is a key problem.An approach based on fault check graph is proposed.An N-port photonic router is modeled as a complete weighted directed graph called pre-Fault Check Graph,and MRR model is created.By the complete weighted directed graph and fault simulation,the proposed method is established with fault check graph and MRR model.The experimental results prove that the proposed approach is effective with the single fault simulation and double fault simulation.