Multi-channel composite spoof surface plasmon polaritons propagating along periodically corrugated metallic thin films

Abstract

In this work, we demonstrate that composite spoof surface plasmon polaritons can be excited by coplanar waveguide, which are composed of two different spoof surface plasmon polaritons (SSPPs) modes propagating along a periodically corrugated metallic thin film simultaneously. These two SSPPs correspond to the dominant modes of one-dimensional (1D) periodical hole and groove arrays separately. We have designed and simulated a planar composite plasmonic waveguide in the microwave frequencies, and the simulation results show that the composite plasmonic waveguide can achieve multi-channel signal transmission with good propagation performance. The proposed planar composite plasmonic metamaterial can find potential applications in developing surface wave devices in integrated plasmonic circuits and multi-channel signal transmission systems in the microwave and terahertz frequencies.

A Novel Broadband Band-pass Filter Based on Spoof Surface Plasmon Polaritons

“…Many related works based on this structure have been reported. For example, a planar composite plasmonic waveguide can achieve three or more signals transmission with a good propagation performance26. A broadband and high-efficiency transition is designed to connect a microstrip line to a conformal surface plasmon (CSP) waveguide27.…”

“…A SPPs bandpass filter was designed using a bulky structure with a periodic subwavelength metallic Domino array23. Recently, efficient filtering effect and ultrathin spoof surface plasmonic waveguides were already reported2425262728293031323334, which show excellent filtering characteristics such as low loss and wideband. However, the existing articles have not given a clear theoretical analysis on the designs.…”

Design and Modeling of Spoof Surface Plasmon Modes-Based Microwave Slow-Wave Transmission Line

“…Ma et al exploited SSP modes to construct a TL connected to a CPW line [21]. In another study, the multichannel composite SSPs were excited by CPW [22]. Pan et al applied electrically resonant metamaterials to control the rejection of an SSP-based TL [23].…”

Spoof surface plasmon polaritons based notch filter for ultra-wideband microwave waveguide

“…The spoof SPP structures have been proposed to transform the traditional Somerfield or Zen neck surface waves into the highly confined spoof SPPs. Generally, spoof SPP structures are composed by metal surfaces decorated with 1D arrays of sub wavelength grooves, 2D arrays of sub wavelength holes/dimples, or 3D metal wire in which a periodic array of radical grooves is drill [4,[10][11][12][13][14][15]. To solve the shortcomings in the fabrication and integration for most of the currently existing 3D spoof SPP structures, an ultrathin spoof SPPs one-dimensional grooves structure in the microwave frequencies has been proposed by Cui et al, which can be bent, twisted, and wrapped to arbitrary surfaces to produce conformal surface plasmons (CSPs) [5,[15][16][17][18][19][20][21][22].…”