Sub-Wavelength Plasmonic Mode Confinement in Semiconductor-Gap-Dielectric Waveguide in THz range

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We have investigated the dispersion relation of novel semiconductor-gap-dielectric waveguide in terahertz range. It is shown that InSb-SiO 2 -Si structure supports strongly confined guided mode with area of 6.6 × 10−5 λ2 at 1 THz.

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