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Nonlinear couplers with tapered plasmonic waveguides

Salgueiro, José R.; Kivshar, Yuri S.


We suggest and demonstrate numerically that, by employing tapered waveguides in the geometry of a directional coupler, we can enhance dramatically the performance for optical switching of nonlinear plasmonic couplers operating at the nanoscale, overcoming the detrimental losses but preserving the subwavelength confinement. We demonstrate that, by an appropriate choice of the taper angle of the coupled metal-dielectric slot waveguides, we can compensate for the amplitude decrease and enhance the...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.20.009403


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