Defect modes in a two-dimensional square-lattice photonic crystal

Abstract

This paper presents the transmission characteristics of defects with square and rectangular cross-section and different permittivity in a two-dimensional photonic crystal composed of circular cylinders on a square lattice. It has been observed particularly that a monomode and a quadruple mode, located closely, exist for a single square cross-section defect, and a symmetric and an antisymmetric modes, also located closely, exist for two missing-cylinder defects. (C) 2002 Elsevier Science B.V. All rights reserved.