Fast hybrid method for modeling scattering from doubly periodic dielectric structure in 3-D

Author

Wang, Feng ; Lee, Robert

Author_Institution

Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH, USA

fYear

2011

fDate

3-8 July 2011

Firstpage

331

Lastpage

334

Abstract

In this paper, we present an efficient hybrid method based on finite element (FE) and rigorous coupled wave analysis (RCWA) to model scattering from 3-D doubly periodic dielectric structures. The mode expansion technique is used as boundary truncation scheme. This scheme allows truncation boundaries to be placed close to dielectric grating, thus significantly reduces the size of the problem. Comparisons with finite element/boundary integral method, as well as, FE/RCWA with perfectly matched layer (PML), will be given for accuracy validation.

Keywords

boundary integral equations; coupled mode analysis; dielectric materials; electromagnetic wave scattering; finite element analysis; periodic structures; boundary integral method; boundary truncation scheme; dielectric grating; doubly periodic dielectric structure; fast hybrid method; finite element method; mode expansion technique; perfectly matched layer; rigorous coupled wave analysis; Computational modeling; Dielectrics; Finite element methods; Gratings; Integral equations; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5996710

Filename

5996710