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  • Title: Selective optical-optical switching for planar plasmonic waveguides and nodes.
    Author: Quong MC, Elezzabi AY.
    Journal: Opt Express; 2008 May 26; 16(11):8198-212. PubMed ID: 18545531.
    Abstract:
    Two nodes are studied as means to perform selective optical-optical switching of four planar thin surface plasmon waveguides by interfering TEM(10), TEM(01), and TEM(00) light beams incident upon a node. One node uses a flat-apex pyramidal reflector to reflect the incident light toward the waveguides' ends. An alternative node is a simple square aperture, which couples surface plasmons through light diffraction at the aperture's edges. Numerical calculations predict switching contrast, coupling efficiencies, and cross-talk between waveguides. Individually turned-off waveguides are shown to have their coupled surface plasmons attenuated by at least -10 dB and up to -21 dB.
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