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We report a design method of surface plasmon polaritons sharp bends based on transformation optics. Plasmonic waveguide bends with different angles, which possess little radiation loss, are proposed. Transformation media can be simply achieved with homogeneous and nonmagnetic materials, which can be constructed by altering two different dielectric films. Electromagnetic simulations by a finite-element...
We propose a half-cylindrical hyperlens with symmetrical metallodielectric structure which consists of five periods of the symmetrical GaP/Ag/GaP films. Such hyperlens can transfer subwavelength information to the output surface (about one wavelength) due to the flat dispersion. Compared with the half-cylindrical hyperlens composed of the resonant Ag/GaP structure, the symmetrical GaP/Ag/GaP metallodielectric...
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