Numerical Analysis of Asymmetric Silicon Nanowire Waveguide as Compact Polarization Rotator

Author

Leung, D.M.H. ; Rahman, B.M.A. ; Grattan, K.T.V.

Author_Institution

Sch. of Eng. & Math. Sci., City Univ. London, London, UK

Volume

3

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

381

Lastpage

389

Abstract

In this paper, an ultracompact design of a low-loss silicon (Si) polarization rotator based on a silicon-on-insulator platform, which contains an asymmetric strip Si nanowire waveguide core, is presented. A full-vectorial finite element method and the least squares boundary residual method are used to study the effects of the device parameters, the results of which indicate that a very high polarization conversion with a very low polarization crosstalk is possible.

Keywords

finite element analysis; integrated optics; least squares approximations; nanophotonics; nanowires; optical communication equipment; optical crosstalk; optical waveguides; Si; asymmetric nanowire waveguide; compact polarization rotator; full vectorial finite element method; least squares boundary residual method; polarization conversion; polarization crosstalk; silicon-on-insulator; Finite element methods; Indexes; Optical filters; Optical polarization; Optical waveguides; Silicon; Strips; Optical devices, optical waveguides, numerical analysis, finite element methods, numerical simulation, silicon devices, nanophotonics, polarization rotator;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2011.2140098

Filename

5744087