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Surface plasmon polariton device including discontinuous waveguide separated by gap, and apparatus and method for generating surface plasmon polariton signal using same
Surface plasmon polariton device including discontinuous waveguide separated by gap, and apparatus and method for generating surface plasmon polariton signal using same
A plasmonic device and an apparatus and method for generating a surface plasmon polariton (SPP) mode using the plasmonic device are disclosed herein. The plasmonic device includes a first plasmonic waveguide and a second plasmonic waveguide. The first plasmonic waveguide is made of a strip-shaped metal material forming at least one pair of first metal-dielectric interfaces along with a dielectric layer, and extends from an input location to a gap start location. The second plasmonic waveguide is made of a strip-shaped metal material forming at least one pair of second metal-dielectric interfaces in planes identical to those of the at least one pair of first metal-dielectric interfaces of the first plasmonic waveguide, and extends from a gap end location, spaced apart from the gap start location by the length of a gap along the propagation direction of the SPP, to an SPP output location.
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