Title :
Coupling and decoupling of electromagnetic waves in parallel 2D photonic crystal waveguides
Author :
Boscolo, Stefano ; Midrio, Michele ; Someda, Carlo G.
Author_Institution :
Dipt. di Ingegneria Elettrica, Udine Univ., Italy
fDate :
1/1/2002 12:00:00 AM
Abstract :
The behavior of two nearby straight photonic crystal waveguides is analyzed. It is shown that the two guides, considered as a single system, may realize a very efficient wavelength selective directional coupler, that may be used as a channel interleaver in a WDM communications system. In addition, we also show that, by properly designing the geometry of the dielectric region between the guide cores, waveguide decoupling can be obtained. Necessary conditions for this feature to be obtained are analytically derived, and an electromagnetic explanation of the decoupling process is given
Keywords :
optical communication equipment; optical design techniques; optical directional couplers; optical waveguide theory; photonic band gap; telecommunication channels; wavelength division multiplexing; WDM communications system; channel interleaver; decoupling process; dielectric region; electromagnetic explanation; electromagnetic wave coupling; electromagnetic wave decoupling; geometry; guide cores; nearby straight photonic crystal waveguides; parallel 2D photonic crystal waveguides; single system; waveguide decoupling; wavelength selective directional coupler; Dielectrics; Directional couplers; Electromagnetic coupling; Electromagnetic scattering; Electromagnetic waveguides; Optical communication equipment; Optical devices; Optical waveguides; Photonic crystals; Wavelength division multiplexing;
Journal_Title :
Quantum Electronics, IEEE Journal of
