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10 May 2010 Fast localized modes propagating in optical metal coaxial waveguides
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In this paper we propose new optical waveguides, made of glasses and noble metals. Such waveguides are like coaxial cables where inner metal rods are replaced by thin metal annuluses filled with a glass inside. Numerical simulations demonstrate that the proposed waveguide, having nanosize cross-section, supports propagation of modes, which phase velocity is close to the speed of light and which field is localized outside the metal. These modes are dipole-like modes and are characterized by comparatively low losses.
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O. N. Kozina, L. A. Melnikov, and I. S. Nefedov "Fast localized modes propagating in optical metal coaxial waveguides", Proc. SPIE 7712, Nanophotonics III, 771214 (10 May 2010);

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