title: Investigation of band structures for 2D non-diagonal anisotropic photonic crystals using a finite element method based eigenvalue algorithm.
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.
authors.forename: Sen-Ming
authors.initials: SM
authors.lastname: Hsu
authors.forename: Ming-Mung
authors.initials: MM
authors.lastname: Chen
authors.forename: Hung-Chun
authors.initials: HC
authors.lastname: Chang