In this article, a 2D plasmonic waveguide loaded with all dielectricanisotropic metamaterial, consisting of alternative layers of Si-SiO2, has beentheoretically proposed and numerically analyzed. Main characteristics ofwaveguide i.e. propagation constant, propagation length and normalized modearea have been calculated for different values of ridge width and height attelecommunication wavelength. The respective 1D structure of the waveguide hasbeen analytically solved for the anisotropic ridge as a single uniaxial mediumwith dielectric tensor defined by Effective Medium Theory (EMT). The 2Dstructure has been analyzed numerically through FEM simulation using Modeanalysis module in Comsol Multiphysics. Both the EMT and real multilayerstructure have been considered in numerical simulations. Such structure withall dielectric metamaterial provides an extra degree of freedom namely fillfactor, fraction of Si layer in a Si-SiO2 unit cell, to tune the propagationcharacteristics compared to the conventional DLSSP waveguide. A wide range ofvariations in all the characteristics have been observed for different fillfactor values. Besides, the effect of the first interface layer has also beenconsidered. Though all dielectric metamaterial has already been utilized inphotonic waveguide as cladding, the implementation in plasmonic waveguide hasnot been investigated yet to our best knowledge. The proposed device might be apotential in deep sub-wavelength optics, PIC and optoelectronics.
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