Open AccessNanoplasmonic couplers and splitters
Author(s) -
Rami A. Wahsheh,
Zhigang Lu,
Mustafa A. G. Abushagur
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.019033
Subject(s) - splitter , optics , plasmon , waveguide , beam splitter , coupled mode theory , coupling (piping) , power dividers and directional couplers , dielectric , physics , optoelectronics , materials science , refractive index , laser , metallurgy
In this paper, we present novel designs and analysis of ultra-compact couplers and 1 x 2 splitters based on plasmonic waveguides. Numerical simulation shows coupling efficiency up to 88% for the former one and 45% for each branch for the latter one. The proposed coupler design has the advantages of improving the alignment tolerance of the plasmonic waveguide with respect to the dielectric waveguide and broadening the spectrum response of the splitter.