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

Volume

43

Issue

11

fYear

2007

Firstpage

974

Lastpage

981

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2007.904458

Filename

4346653