Investigation of Band Structures for 2D Non-diagonal Anisotropic Photonic Crystals Using a Finite Element Method Based Eigenvalue Algorithm
Resource
Optics Express 15 (9): 5416-5430
Journal
Optics Express
Journal Volume
15
Journal Issue
9
Pages
5416–5430
Date Issued
2007-04
Author(s)
Abstract
A finite element method based eigenvalue algorithm is developed for the analysis of band structures of two-dimensional non-diagonal anisotropic photonic crystals under the in-plane wave propagation. The characteristics of band structures for the square and triangular lattices consisting of anisotropic materials are examined in detail and the intrinsic effect of anisotropy on the construction of band structures is investigated. We discover some interesting relationships of band structures for certain directions of the wave vector in the first Brillouin zone and present a theoretical explanation for this phenomenon. The complete band structures can be conveniently constructed by means of this concept.
SDGs
Type
journal article