Title :
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
fDate :
6/1/2012 12:00:00 AM
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;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2012.2195650
