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Plasmonic nanowire waveguides, hybrid couplers and planar couplers are potential optical interconnect components, which feature small footprint, low loss, high coupling efficiency at optical communication wavelength, and could be integrated to photonic integrated circuits.
Hybrid plasmonic waveguides based on a surface oxidized dielectric nanowire placed on a metal surface can facilitate simultaneously deep subwavelength mode confinement and large propagation length. Directional coupling based on such waveguides are theoretically investigated. Much lower crosstalk is noticed for such hybrid plasmonic waveguides compared to conventional waveguides based on bare dielectric...
Two asymmetric directional couplers, including the dielectric-hybrid plasmonic coupler and the dielectric-metal-insulator-metal plasmonic coupler, are investigated. The proposed hybrid coupler features short coupling length, high coupling efficiency and can be integrated into the silicon-based platform. The applications of these hybrid couplers include the signal routing between plasmonic waveguides...
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