Analysis of polarisation rotation in cascaded optical waveguide bends

Author

Obayya, S.S.A. ; Rahman, B.M.A. ; Grattan, K.T.V. ; El-Mikati, H.A.

Author_Institution

Dept. of Electr. Electron. & Inf. Eng., City Univ., London, UK

Volume

149

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

75

Lastpage

80

Abstract

The design of a polarisation rotator which is based on the use of cascaded and oppositely-curved optical semiconductor waveguide bends is presented. Using the versatile finite element method, both modal solution and beam propagation analyses are adopted in order to analyse and optimise the rotator performance in terms of polarisation conversion ratio, device length, and scattering losses. A sensitivity analysis of the rotator performance with respect to various fabrication tolerances is also performed

Keywords

finite element analysis; light polarisation; modal analysis; optical losses; optical planar waveguides; optical rotation; optical waveguide components; waveguide discontinuities; TE modes; TM modes; beam propagation; cascaded optical waveguide bends; conformal transformation; device length; fabrication tolerances; finite element method; full vectorial numerical model; modal solution; oppositely-curved semiconductor waveguide bends; perfectly matched layer boundary condition; polarisation conversion ratio; polarisation rotator design; scattering losses; sensitivity analysis;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings -

Publisher

iet

ISSN

1350-2433

Type

jour

DOI

10.1049/ip-opt:20020347

Filename

1019787