在基于多芯光纤(MCF)的空分复用弹性光网络(SDM-EON)中, 针对纤芯间串扰导致的传输信号物理损伤问题, 从频谱分配和纤芯选择角度出发, 提出了一种串扰感知的SDM-EON频谱分配算法。该算法在为业务请求分配频谱资源时通过避免填充相邻纤芯来尽量减少单个请求内部的串扰以及请求与请求之间的串扰。数值仿真结果表明: 在NSFNet和USNet 2种网络拓扑中, 该算法能够在维持较低带宽阻塞率水平的同时有效改善串扰问题。

In space-division multiplexing elastic optical networks(SDM-EON) based on multicore fiber(MCF), one of the problems is the physical impairment of transmission signals due to inter-core crosstalk. From the perspective of spectrum allocation and core selection, this paper proposes a crosstalk-aware spectrum allocation algorithm for SDM-EON. In this algorithm, when allocating spectrum resources for service requests, crosstalk within a single request and between requests can be minimized by avoiding filling adjacent cores. The numerical simulation results show that the algorithm can effectively improve the crosstalk problem while maintaining a low bandwidth blocking probability in NSFNet and USNet network topologies.