Title :
A Novel Design of 2-D Photonic Crystal Directional Coupler With High Extinction Ratio and Short Coupling Length
Author :
Qu, Yang ; Ren, Hongliang ; Jiang, Chun
Author_Institution :
Shanghai Jiao Tong Univ., Shanghai
Abstract :
In this paper, a novel structure of a 2 times 2 directional coupler with high extinction ratio, small coupling length, and decoupling input/output channels is proposed, based on a 2-D photonic crystal with a hexagonal lattice of air holes. A total length of the coupling component of 24a and an extinction ratio of -35.07 dB are achieved in simulation using the finite difference time-domain method. Potential applications of this novel structure in wavelength demultiplexing and 4 times 4 directional coupling switches are addressed.
Keywords :
demultiplexing equipment; finite difference time-domain analysis; optical communication equipment; optical design techniques; optical directional couplers; optical materials; optical switches; photonic crystals; 2-D photonic crystal directional coupler; air holes; coupling length; extinction ratio; finite difference time-domain method; hexagonal lattice; input-output channels; optical switches; wavelength demultiplexing; Couplings; Demultiplexing; Directional couplers; Distributed control; Extinction ratio; Lattices; Optical filters; Optical waveguides; Personal communication networks; Photonic crystals; Coupling length; extinction ratio; phase difference; photonic crystal;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2007.904458
