Perfect plane-wave source for a high-order symplectic finite-difference time-domain scheme

作     者：王辉 黄志祥 吴先良 任信钢 

作者机构：Key Laboratory of Intelligent Computing & Signal Processing of Ministry of EducationAnhui University Department of Physics and Electronic EngineeringHefei Normal University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2011年第20卷第11期

页      面：365-370页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.60931002 and 61101064) the Universities Natural Science Foundation of Anhui Province,China(Grant Nos.KJ2011A002 and 1108085J01) 

主　　题：splitting plane-wave finite-difference time-domain high-order symplectic finite-differencetime-domain scheme plane-wave source 

摘      要：The method of splitting a plane-wave finite-difference time-domain （SP-FDTD） algorithm is presented for the initiation of plane-wave source in the total-field / scattered-field （TF/SF） formulation of high-order symplectic finite- difference time-domain （SFDTD） scheme for the first time. By splitting the fields on one-dimensional grid and using the nature of numerical plane-wave in finite-difference time-domain （FDTD）, the identical dispersion relation can be obtained and proved between the one-dimensional and three-dimensional grids. An efficient plane-wave source is simulated on one-dimensional grid and a perfect match can be achieved for a plane-wave propagating at any angle forming an integer grid cell ratio. Numerical simulations show that the method is valid for SFDTD and the residual field in SF region is shrinked down to -300 dB.