为了解决空分复用弹性光网络(SDM-EONs)中芯间串扰(ICXT)带来的业务阻塞问题, 文章提出了一种动态寻路和串扰感知解决算法。首先在路由阶段设计了一个结合最短路径和路径负载的候选路径排序公式, 根据系统负载动态地为业务请求选择更加合适的传输路径。同时对于多芯光纤中的ICXT问题, 提出了一种串扰感知策略, 将ICXT的影响降至最低, 提高业务成功传输的概率, 降低阻塞率。文章定义了ICXT改善指数来评价所提算法与对比算法的性能差异。仿真结果表明, 文章所提算法相比于多篇对比文献, 在阻塞率性能和ICXT影响上有着明显的提升。

In order to solve the problem of service blocking caused by Inter Core Crosstalk (ICXT) in Space Division Multiplexing Elastic Optical Network (SDM-EONs), a dynamic routing and crosstalk sensing algorithm is proposed. Firstly, in the routing stage, a candidate path sorting formula combining the shortest path and path loading is designed to dynamically select a more appropriate path for business requests according to the system load. For the problem of inter core crosstalk in multi-core fiber, a crosstalk sensing strategy is proposed to minimize the impact of inter core crosstalk, with improvement of the probability of successful transmission and reduction of the blocking rate. In order to evaluate the performance of this algorithm, the ICXT improvement index is defined to evaluate the performance difference between this algorithm and the comparison algorithm. Simulation results show that the algorithm in this paper has a significant improvement in blocking rate performance and inter core crosstalk compared with many comparative literatures.