Trapping of surface plasmon wave through gradient corrugated strip with underlayer ground and manipulating its propagation

Corrugated metal surface with underlayer metal as ground is designed as spoof surface plasmons polaritons (SSPPs) structure in microwave frequencies. Efficient conversion from guided wave to SSPP is required for energy feeding into and signal extracting from such plasmonic structure. In this paper, first a high efficient transition design is presented by using gradient corrugated strip with underlayer metal as ground and by using the impedance matching theory. The SSPP wave is highly confined within the teeth part of the corrugated surface. By using this characteristic, then the simple wire-based metamaterial is added below the strip to manipulate the SSPP wave within the propagating band. Two aforementioned devices are designed and fabricated. The simulated and measured results on the scattering coefficients demonstrate the excellent conversion and excellent manipulating of SSPP transmitting. Such results have very important value to develop advanced plasmonic integrated circuits in the microwave frequencies.

[1]  Qiang Cheng,et al.  Broadband and high‐efficiency conversion from guided waves to spoof surface plasmon polaritons , 2014 .

[2]  S. R. Andrews,et al.  Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces , 2008 .

[3]  D. R. Chowdhury,et al.  Experimental demonstration of terahertz metamaterial absorbers with a broad and flat high absorption band. , 2011, Optics letters.

[4]  J. Pendry,et al.  Surfaces with holes in them: new plasmonic metamaterials , 2005 .

[5]  Stefan A Maier,et al.  Terahertz surface plasmon-polariton propagation and focusing on periodically corrugated metal wires. , 2006, Physical review letters.

[6]  Mills,et al.  Surface corrugation and surface-polariton binding in the infrared frequency range. , 1989, Physical review. B, Condensed matter.

[7]  Haifeng Cheng,et al.  Analysis and design of wire-based metamaterial absorbers using equivalent circuit approach , 2013 .

[8]  Yujie J. Ding,et al.  Experimental verification of the rainbow trapping effect in adiabatic plasmonic gratings , 2010, Proceedings of the National Academy of Sciences.

[9]  Tie Jun Cui,et al.  An ultra-wideband surface plasmonic filter in microwave frequency , 2014 .

[10]  Tie Jun Cui,et al.  Controlling rejections of spoof surface plasmon polaritons using metamaterial particles. , 2014, Optics express.

[11]  Tie Jun Cui,et al.  Conformal surface plasmons propagating on ultrathin and flexible films , 2012, Proceedings of the National Academy of Sciences.

[12]  Bandpass filter based on low frequency spoof surface plasmon polaritons , 2012 .

[13]  Tie Jun Cui,et al.  Ultrathin dual-band surface plasmonic polariton waveguide and frequency splitter in microwave frequencies , 2013 .

[14]  Wang Tao,et al.  Extending the Bandwidth of Electric Ring Resonator Metamaterial Absorber , 2011 .

[15]  J. Pendry,et al.  Mimicking Surface Plasmons with Structured Surfaces , 2004, Science.

[16]  G. Goubau.  Surface Waves and Their Application to Transmission Lines , 1950 .

[17]  J. Sambles,et al.  Experimental Verification of Designer Surface Plasmons , 2005, Science.