Abstract
ABSTRACTWe investigate the potential of a slit grating structure on a silver film embedded in a high index dielectric film, as a Plasmonic optical antenna in infrared region. Using FDTD calculations it is demonstrated that the transmission properties of the structure has strong dependence on the dimension of dielectric film. By tapering the height of output gratings directionality of the emitted beam has been improved. We propose the application of the Plasmonic antenna and examine its performance in axial injection of light from single mode fiber to photonic crystal waveguide.
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