[其它]Plasmonics: Metal Nanostructures for Subwavelength Photonic Devices

This paper reviews recent progress toward the creation of a nanophotonic framework for confining and guiding electromagnetic sL$:
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energy at visible and near-infrared frequencies using surface plasmon excitations sustained by metallic nanostructures. [;J>bi;3N  
Prominent geometries such as metal/insulator/metal-gap waveguides are assessed in terms of light confinement and the energy 
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attenuation of the guided modes, as well as metal-nanoparticle waveguides that guide light via near-field coupling of localized HKUn`ng  
particle or gap plasmon modes for deep subwavelength confinement. The effective mode volume concept of dielectric optics is sdo[D  
then applied to plasmonic nanoresonators, which allows a comparison with established dielectric microcavities and demonstrates the ;N?]eM}yf  
deep subwavelength confinement achievable in metallic nanocavities. Lastly, a solution to the coupling problem of surface plasmon– #NryLE!/  
polariton modes to the outside world is presented in the form of a fiber-accessible .. #%h-[/  
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