Title :
Dual grating-assisted directional coupling between fibers and thin semiconductor waveguides
Author :
Masanovic, Goran Z. ; Passaro, Vittorio M N ; Reed, Graham T.
Author_Institution :
Sch. of Electron. & Phys. Sci., Univ. of Surrey, Guildford, UK
Abstract :
A novel dual grating-assisted directional coupler (DGADC) for coupling an optical fiber with a thin semiconductor waveguide is proposed. As an example, a DGADC in silicon-on-insulator is discussed. Maximum coupling efficiency in excess of 90% can be obtained using this coupler, while the highest coupling efficiency previously reported was only 40%.
Keywords :
diffraction gratings; integrated optics; optical directional couplers; optical fibre couplers; silicon-on-insulator; 90 percent; DGADC; dual grating-assisted directional coupling; integrated optics; maximum coupling efficiency; optical fiber coupling; silicon-on-insulator; thin semiconductor waveguides; Directional couplers; Fiber gratings; Integrated optics; Optical coupling; Optical fiber couplers; Optical fibers; Optical refraction; Optical waveguide components; Optical waveguides; Semiconductor waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818216
