Deep Subwavelength Terahertz Waveguides Using Gap Magnetic Plasmon
Atsushi Ishikawa, Shuang Zhang, Dentcho A. Genov, Guy Bartal, Xiang Zhang
PHYSICAL REVIEW LETTERS
043904-1 - 043904-4
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 (<=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.
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