Optimized 3-D Simulation Method for Modeling Out-of-Plane Radiation in Silicon Photonic Integrated Circuits

Author

Westerveld, Wouter J. ; Urbach, H. Paul ; Yousefi, Mirvais

Author_Institution

Fac. of Appl. Sci., Delft Univ. of Technol., Delft, Netherlands

Volume

47

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

561

Lastpage

568

Abstract

We present an accurate and fast 3-D simulation scheme for out-of-plane grating couplers, based on 2-D rigorous [finite difference time domain (FDTD)] grating simulations, the effective index method, and the Rayleigh-Sommerfeld diffraction formula. In comparison with full 3-D FDTD simulations, the rms difference in electric field is below 5% and the difference in power flux is below 3%. A grating coupler for coupling from a silicon-on-insulator photonic integrated circuit to an optical fiber positioned 0.1 mm above the circuit is designed as an example.

Keywords

diffraction gratings; finite difference time-domain analysis; integrated optics; optical fibre couplers; silicon-on-insulator; 2-D rigorous grating simulations; Rayleigh-Sommerfeld diffraction formula; Si; effective index method; finite difference time domain method; optical fiber; optimized 3-D simulation method; out-of-plane grating couplers; out-of-plane radiation; silicon photonic integrated circuits; Couplers; Couplings; Finite difference methods; Gratings; Integrated circuit modeling; Solid modeling; Time domain analysis; Electromagnetic scattering by periodic structures; finite difference time domain methods; gratings; integrated optics; optical planar waveguide couplers; silicon-on-insulator technology; simulations;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2010.2099645

Filename

5739082