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Transverse Electromagnetic Modes in Aperture Waveguides Containing a Metamaterial with Extreme Anisotropy
2011
Physical Review Letters
We use meta-materials with extreme anisotropy to solve the fundamental problem of light transport in deep sub-wavelength apertures. By filling a simply-connected aperture with an anisotropic medium, we decouple the cutoff frequency and the group velocity of modes inside apertures. In the limit of extreme anisotropy, all modes become purely transverse electro-magnetic modes, free from geometrical dispersion, propagate with a velocity controlled by the transverse permittivity and permeability,
doi:10.1103/physrevlett.106.223902
pmid:21702600
fatcat:a6gguc4p6zesrbl7l4le7fa7mi