Authors: Tie Jun Cui and Xiaopeng Shen
Source: FERMAT, Volume 8, Communications 1, Mar Apr.,2015
Abstract: We present several spoof surface plasmon structures in the microwave and terahertz frequencies, including surface plasmon polariton (SPP) waveguides and the relevant devices, and localized surface plasmons (LSPs). In details, we will introduce our recent work on ultrathin and flexible SPP waveguides with subwavelength width, which can sustain highly localized SPPs along two orthogonal directions in broadband by keeping good modal shapes and propagating long distance with low bending loss, and the resulting compact plasmonic filters, bends, beam spillters, polarizers, and resonantors. We also demonstrate spoof LSPs on planar ultrathin textured metallic disks with subwavelength scales, which have potential applications as plasmonic sensors in the microwave and terahertz frequencies.
Keywords:Surface plasmon polaritons (SPPs), conformal surface plasmons, localized surface plasmons, SPP waveguide, passive SPP components, active SPP components.
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Spoof Surface Plasmons and Applications in Microwave Frequencies