Title :
Effects of grating heights on highly efficient unibond SOI waveguide grating couplers
Author :
Ang, T.W. ; Reed, G.T. ; Vonsovici, A. ; Evans, A.G.R. ; Routley, P.R. ; Josey, M.R.
Author_Institution :
Sch. of Electron. Eng., Inf. Technol. & Math., Surrey Univ., Guildford, UK
Abstract :
We report the first successful experimental evaluation of the effect of grating height upon the output efficiency of grating couplers as predicted using perturbation theory. In addition, we have also produced a grating with an output efficiency of 70%, which is the highest efficiency yet reported for a silicon-on-insulator waveguide grating coupler.
Keywords :
diffraction gratings; integrated optics; optical couplers; optical waveguide theory; perturbation theory; silicon; silicon-on-insulator; 70 percent; Si; Si-SiO/sub 2/-Si; grating couplers; grating heights; highest efficiency; highly efficient unibond SOI waveguide grating couplers; output efficiency; perturbation theory; silicon-on-insulator waveguide grating coupler; Couplers; Gratings; Integrated optics; Optical devices; Optical modulation; Optical refraction; Optical variables control; Optical waveguides; Silicon on insulator technology; Surface waves;
Journal_Title :
Photonics Technology Letters, IEEE
