TE/TM-mode pass polarizers and splitter based on an asymmetric twin waveguide and resonant coupling

Author

Wieczorek, Andreas ; Roycroft, Brendan ; Peters, Frank H. ; Corbett, Brian

Author_Institution

Tyndall Nat. Inst., Univ. Coll. Cork, Cork, Ireland

fYear

2011

Firstpage

163

Lastpage

164

Abstract

A new passive TE/TM-mode polarization filter for an InGaAsP/InP material system based on an asymmetric twin waveguide (ATG) and resonant coupling is investigated. Linear taper sections with different taper angles are introduced to couple between the two vertically separated waveguides. At a wavelength of 1.55 μm extinction ratios (ER) of 20 dB for the TE- and more than 10 dB for the TM-mode are reported for devices shorter than 400 μm. Furthermore we show, this concept can be expanded to a polarization splitter.

Keywords

III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; light polarisation; optical beam splitters; optical couplers; optical filters; optical waveguides; InGaAsP-InP; TE/TM-mode pass polarizers; asymmetric twin waveguide; linear taper sections; passive TE/TM-mode polarization filter; polarization splitter; resonant coupling; wavelength 1.55 mum; Couplings; Educational institutions; Erbium; Indium phosphide; Optical polarization; Optical waveguides; Propagation constant;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices (NUSOD), 2011 11th International Conference on

Conference_Location

Rome

ISSN

2158-3234

Print_ISBN

978-1-61284-876-1

Electronic_ISBN

2158-3234

Type

conf

DOI

10.1109/NUSOD.2011.6041196

Filename

6041196