A kind of plasmonic open waveguide,
which is a periodic subwavelength metallic Domino array, is investigated both
theoretically and experimentally in this paper. Based on the guiding mechanism
of spoof surface plasmon polaritions (spoof SPPs), the transmission properties
of this waveguide are controllable by altering the geometric parameters of the
periodic structure. Microwave experimental results verify the high efficiency
of wave guiding in such open waveguide, as predicted in theoretic analysis.
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