Deep subwavelength terahertz waveguides using gap magnetic plasmon

Abstract

We propose a novel subwavelength terahertz (THz) waveguide based on the magnetic plasmon polariton mode guided by a narrow gap in a negative permeability metamaterial. Deep subwavelength waveguiding (<λ/ 10) with group velocities down to c/21.8 is demonstrated in a straight waveguide, a 90° bend, and a splitter. The proposed waveguiding system inherently has no cutoff for any core width and height, paving the way toward the deep subwavelength transport of THz waves for integrated THz device applications. Show more