A stretched coordinate technique for numerical absorption of evanescent and propagating waves in planar waveguiding structures

Author

Gribbons, Michael A. ; Pinello, William P. ; Cangellaris, Andreas C.

Author_Institution

Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA

Volume

43

Issue

12

fYear

1995

fDate

12/1/1995 12:00:00 AM

Firstpage

2883

Lastpage

2889

Abstract

Berenger´s PML technique is modified to allow for the absorption of evanescent and propagating waves in FDTD modeling of wave propagation in planar waveguiding structures. Analytic results illustrate the validity and capability of the proposed modification. Numerical studies explain the numerical implementation of the modified PML in the FDTD and in the compact 2D-FDTD algorithms. Guidelines for the proper selection of the various parameters that govern the performance of the modified PML are presented. The results from simulations indicate that the proposed modified PML grid truncation can be used efficiently for highly accurate numerical analysis of planar waveguiding structures

Keywords

dispersion (wave); electromagnetic wave propagation; finite difference time-domain analysis; planar waveguides; waveguide theory; 2D-FDTD algorithms; Berenger´s PML technique; FDTD modeling; PML grid truncation; evanescent waves; numerical absorption; perfectly matched layer; planar waveguiding structures; propagating waves; stretched coordinate technique; Absorption; Analytical models; Computational modeling; Electromagnetic scattering; Finite difference methods; Guidelines; Maxwell equations; Optical scattering; Programmable logic arrays; Time domain analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.475650

Filename

475650