Title :
Performance of 2D-Grating couplers designed through full 3D-FDTD numerical simulations
Author :
Lacava, C. ; Carroll, L. ; Gerace, Dario ; Andreani, Lucio Claudio ; Fournier, M. ; Messaoudene, S. ; Pavarelli, Nicola ; Lee, Joon Sang ; O´Brien, Peter A. ; Menezo, Sylvie ; Cristiani, I.
Author_Institution :
Dept. of Electr., Univ. of Pavia, Pavia, Italy
Abstract :
By bridging the dimensional gap between fiber mode and Silicon On Insulator (SOI) layer thickness, 1D and 2D-Grating couplers (GCs) represent promising solutions to the challenge of coupling light into silicon photonics circuits. Considerable work has been done over the last decade towards optimization 1D-GCs, that nevertheless exhibit a very strong sensitivity to the input polarisation state of the fiber, which makes them unsuitable for many inter-system coupling applications. Recently, a new strategy based on a full 3D-FDTD (finite difference time domain) calculations has been proposed to describe 2D-GC operation, and optimize their performance.
Keywords :
diffraction gratings; finite difference time-domain analysis; integrated optics; optical design techniques; optical fibre couplers; optical fibre polarisation; optimisation; 1D grating couplers; 2D grating couplers; 3D-FDTD; fiber mode; finite difference time domain; full 3D-FDTD numerical simulations; input polarisation state; intersystem coupling applications; optimization; silicon photonics circuits; silicon-on-insulator layer thickness; Couplers; Couplings; Gratings; Optical fiber couplers; Optical fiber devices; Optical fiber polarization;
Conference_Titel :
Group IV Photonics (GFP), 2014 IEEE 11th International Conference on
Conference_Location :
Paris
Print_ISBN :
978-1-4799-2282-6
DOI :
10.1109/Group4.2014.6961991
