Orthogonal Hybrid Waveguides: An Approach to Low Crosstalk and Wideband Photonic Crystal Intersections Design

Author

Fasihi, Kiazand ; Mohammadnejad, Shahram

Author_Institution

Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran

Volume

27

Issue

6

fYear

2009

fDate

3/15/2009 12:00:00 AM

Firstpage

799

Lastpage

805

Abstract

A low crosstalk and wideband photonic crystal (PC) waveguide intersection design based on two orthogonal hybrid waveguides in a crossbar configuration is proposed. The finite-difference time-domain (FDTD) and coupled-mode theory (CMT) methods are used to simulate the hybrid waveguides of square lattice. The bandwidth (BW) and crosstalk of the intersection are investigated for various radii of the coupled cavities. It is shown that simultaneous crossing of the lightwave signals through the intersection with negligible interference is possible. The transmission of a 200-fs pulse at 1550 nm is simulated by using the FDTD method, and the transmitted pulse shows negligible crosstalk and very little distortion.

Keywords

finite difference time-domain analysis; optical waveguides; photonic crystals; bandwidth; coupled-mode theory methods; finite-difference time-domain; lightwave signals; orthogonal hybrid waveguides; time 200 fs; transmitted pulse; wavelength 1550 nm; wideband photonic crystal intersections design; Bandwidth; Couplings; Crosstalk; Finite difference methods; Interference; Lattices; Photonic crystals; Time domain analysis; Waveguide theory; Wideband; Crosstalk; coupled-mode theory (CMT); finite- difference time-domain (FDTD); orthogonal hybrid wave guides; photonic crystal (PC) intersections;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2008.929422

Filename

4814806