Title :
Phase Shaping to Control the Performance of a Contra-Directional Grating-Assisted Coupler
Author :
Wielichowski, Marcin ; Patela, Sergiusz
Author_Institution :
Wroclaw Univ. of Technol., Wroclaw
fDate :
7/15/2007 12:00:00 AM
Abstract :
We propose a method of improving the performance of a planar grating-assisted contra-directional coupler for use as a photonic switch. By means of a nonuniform Bragg grating, rapid phase jumps are introduced within the reflection spectra of coupler supermodes. This creates a reflection peak of steep slopes, flat top, and desired width. Sample numerical results are given for realistic material and device parameters. A discrete layer-peeling method is employed for the synthesis of the Bragg grating.
Keywords :
diffraction gratings; integrated optics; light reflection; multiplexing equipment; optical directional couplers; photonic switching systems; telecommunication network routing; add-drop multiplexer; all-optical router; coupler supermodes; device parameters; discrete layer-peeling method; nonuniform Bragg grating; phase shaping; photonic switch; planar grating-assisted contradirectional coupler; rapid phase jumps; reflection spectra; Bragg gratings; Optical coupling; Optical distortion; Optical reflection; Optical refraction; Optical variables control; Refractive index; Routing; Shape control; Switches; Gratings; optical couplers; optical switches; waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.899651
