Finite element analysis of plane wave diffraction from anisotropic dielectric gratings
| Autor: | Yasuhide Tsuji, Masanori Koshiba, Yuichi Ohkawa |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Diffraction
Materials science Computer Networks and Communications business.industry Plane wave Physics::Optics General Physics and Astronomy Dielectric Grating Finite element method Optics Periodic boundary conditions Electrical and Electronic Engineering business Diffraction grating Extended finite element method |
| Zdroj: | Electronics and Communications in Japan (Part II: Electronics). 79:1-10 |
| ISSN: | 1520-6432 8756-663X |
| Popis: | In this paper, the formulation of the analysis based on the finite element method is presented for the first time for an anisotropic dielectric grating. By this analysis method, the diffraction characteristics of a plane wave by an anisotropic dielectric grating with an arbitrary shape can be computed easily. The finite element method is applied to the region corresponding to one period containing an anisotropic dielectric grating. The analytical relationships are applied to the boundaries on the incident and transmitted sides while the periodic boundary condition is applied to all other boundaries. Specifically, an index modulated grating and a groove grating are chosen for the analysis of the diffraction characteristics when the TE and TM waves are coupled. From the comparison with the analysis results by the coupled-mode theory and the spatial harmonic expansion method, the validity of the present method is confirmed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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