Compact Polarization Rotator Based on Surface Plasmon Polariton With Low Insertion Loss

Author

Komatsu, Masa-aki ; Saitoh, Kunimasa ; Koshiba, Masanori

Author_Institution

Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan

Volume

4

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

707

Lastpage

714

Abstract

An ultracompact mode-evolution-based polarization rotator is proposed. The polarization rotator consists of silicon wire waveguide covered by silica buffer layer and linearly tapered thin aluminum. Numerical simulations using 3-D finite element method demonstrate that it is possible to obtain an 11-μm-long polarization rotator with about -20-dB extinction ratio and less than 4.7-dB loss in C-band for both polarization conversions from TM-like mode to TE-like mode and from TE-like mode to TM-like mode.

Keywords

aluminium; buffer layers; extinction coefficients; finite element analysis; integrated optics; light polarisation; optical losses; optical rotation; optical waveguides; polaritons; silicon; silicon compounds; surface plasmons; 3D finite element method; C-band; Si-SiO₂-Al; TE-like mode; TM-like mode; extinction ratio; insertion loss; linearly tapered thin aluminum; numerical simulations; polarization conversions; silica buffer layer; silicon wire waveguide; size 11 mum; surface plasmon polariton; ultracompact mode-evolution-based polarization rotator; Aluminum; Extinction ratio; Optical waveguides; Silicon; Silicon compounds; Waveguide discontinuities; Wires; Silicon nanophotonics; plasmonics; waveguide devices;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2012.2195650

Filename

6188506