Shift-operator finite-element time-domain dealing with dispersive media

被引：3
|
作者：
Li, Linqian [1 ,2 ]
Wei, Bing [1 ,2 ]
Yang, Qian [1 ,2 ]
Ge, Debiao [1 ,2 ]
机构：
[1] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China
[2] Xidian Univ, Collaborat Innovat Ctr Informat Sensing & Underst, Xian 710071, Peoples R China
来源：
OPTIK | 2019年 / 182卷
基金：
中国国家自然科学基金;
关键词：
Shift-operator; Finite-element time-domain; Dispersive media; EXPLICIT; FETD;
D O I：
10.1016/j.ijleo.2019.01.064
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new technique of finite-element time-domain (FETD) for dealing with dispersive media is presented. First, the basic theory of FETD is discussed, mainly includes electric field (E) and electric displacement vector (D). An iteration equation contains D and E is presented. Followed by an introduction of shift operator to the FETD method, a recursive formulation of constitutive between D and E in time domain is given. Then the achievement of shift-operator finite-element time-domain (SO-FETD) is developed through combining the above two equations. Finally, the feasibility of this technique is validated with 3-dimension numerical examples.
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页码：832 / 838
页数：7
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