An efficient ADE-WLP-FDTD method with new WLPs and factorized splitting scheme for dispersive simulation

IEICE Electronics Express

article

Gui-Ying Liu¹  Wei-Jun Chen¹  Min Zhao¹ 

[1] School of Electronic and Electrical Engineering, Lingnan Normal University

关键词: auxiliary differential equation (ADE);    dispersive materials;    finite-difference time-domain (FDTD);    weighted Laguerre polynomials (WLP);   

DOI  :  10.1587/elex.19.20220473

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

Based on an auxiliary differential equation (ADE) and new weighted Laguerre polynomials (WLPs), an efficient 3-D finite-difference time-domain method (FDTD) with factorized-splitting (FS) scheme is proposed to calculate wave propagation in general dispersive materials. The ADE technique is introduced to model general dispersive materials. Using a new temporal basis, the new WLPs can improve computational efficiency and save computing resources. The FS scheme is used to efficiently solve the huge sparse matrix equation. A numerical example is given to verify the accuracy and the efficiency of the proposed method. The results show its superiority compared with existing methods.

【 授权许可】

CC BY