Title :
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
fDate :
3/15/2009 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.929422
