Title :
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
fDate :
4/1/2002 12:00:00 AM
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;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20020347
