Title :
Silicon microring vertical coupler
Author :
Wahsheh, Rami A. ; Lu, Zhaolin ; Yang, Jun ; Abushagur, Mustafa A G
Author_Institution :
Microsyst. Eng., Rochester Inst. of Technol., Rochester, NY, USA
Abstract :
Silicon microring vertical couplers are proposed and fabricated to efficiently couple light into silicon-on-insulator waveguides for silicon photonic integration. A specific mode is excited to match the effective index of the silicon-on-insulator guided mode by oblique incidence. The vertical leakage from the microring forms gradual coupling into the silicon-on-insulator slab. Coupling efficiency up to 91% is demonstrated using the three-dimensional finite-difference time-domain method. A semi-disk and lateral taper can be used to convert the lateral mode size for coupling light into a single mode silicon-on-insulator waveguide.
Keywords :
finite difference time-domain analysis; integrated optics; optical couplers; optical fabrication; optical waveguides; silicon-on-insulator; 3D finite-difference time-domain method; Si; coupling efficiency; lateral taper; microring vertical coupler; oblique incidence; semi-disk taper; silicon photonic integration; silicon-on-insulator guided mode; silicon-on-insulator waveguides; vertical leakage; Optical coupling; Optical device fabrication; Optical devices; Optical fiber couplers; Optical interconnections; Optical waveguides; Photonic integrated circuits; Semiconductor waveguides; Silicon on insulator technology; Slabs; Integrated optics devices; optical fiber coupler; slab waveguides;
Conference_Titel :
High-Capacity Optical Networks and Enabling Technologies (HONET), 2009 6th International Symposium on
Conference_Location :
Alexandria
Print_ISBN :
978-1-4244-5992-6
DOI :
10.1109/HONET.2009.5423056
