Title :
Two-Dimensional Metallic Photonic Crystal with Point Defect Analysis Using Modified Finite-Difference Frequency-Domain Method
Author :
Li, Y.L. ; Xue, Q.-Z. ; Du, C.H.
Author_Institution :
Key Lab. of High Power Microwave Sources & Technol., Chinese Acad. of Sci., Beijing, China
Abstract :
We have derived a modified finite-difference frequency-domain (FDFD) algorithm for two-dimensional (2-D) metallic photonic crystal (MPC) analysis. Using this method, the numerical results for the transverse-electric (TE) and transverse-magnetic (TM) modes in square and triangular lattices are in excellent agreements with those from other method. Then the correspondence of the band gaps between a unit cell and a supercell is demonstrated. Furthermore, by comparing the field distributions of the defect modes in a point defected MPC and a point defected dielectric photonic crystal (DPC), it is found that the defect MPC has a higher degree of localization, which means that MPC is preponderant for resonator and waveguide applications in millimeter wave and sub-millimeter wave bands.
Keywords :
finite difference methods; optical materials; photonic band gap; photonic crystals; point defects; defect modes; dielectric photonic crystal; finite-difference frequency-domain method; localization; millimeter wave bands; optical resonator; optical waveguide; photonic band gap; point defect analysis; square lattices; submillimeter wave bands; transverse-electric mode; transverse-magnetic mode; triangular lattices; two-dimensional metallic photonic crystal; Defect; finite-difference frequency-domain; photonic crystal; supercell;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2034871
