中文摘要：

一个新 computatiorial 算法为解决在周期的结构散布问题被介绍。当 DSC 算法为空间离散化被利用时， PML 技术被用来在截断无界的领域上处理困难。现在的学习表明方法为解决这个问题是有效的。

英文摘要：

A new computational algorithm is introduced for solving scattering problem in periodic structure. The PML technique is used to deal with the difficulty on truncating the unbounded domain while the DSC algorithm is utilized for the spatial discretization. The present study reveals that the method is efficient for solving the problem.