Journal
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Volume 12, Issue 6, Pages 1214-1220Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2006.879582
Keywords
nanophotonics; optoelectronics; plasmonics
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This paper reviews recent progress toward the creation of a nanophotonic framework for confining and guiding electromagnetic energy at visible and near-infrared frequencies using surface plasmon excitations sustained by metallic nanostructures. Prominent geometries such as metallinsulator/metal-gap waveguides are assessed in terms of light confinement and the energy attenuation of the guided modes, as well as metal-nanoparticle waveguides that guide light via near-field coupling of localized particle or gap plasmon modes for deep subwavelength confinement. The effective mode volume concept of dielectric optics is then applied to plasmonic nanoresonators, which allows a comparison with established dielectric microcavities and demonstrates the deep subwavelength confinement achievable in metallic nanocavities. Lastly, a solution to the coupling problem of surface plasmon-polariton modes to the outside world is presented in the form of a fiber-accessible metal-nanoparticle plasmon waveguide with experimentally demonstrated power transfer up to 75 % at lambda = 1. 5 mu m.
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