Tunable metasurface for spoof surface plasmon polaritons based on microelectromechanical bridge structures

Lars Franke; Steffen Klingel; Marco Rahm

doi:10.1117/12.3029567

2 October 2024 Tunable metasurface for spoof surface plasmon polaritons based on microelectromechanical bridge structures

Lars Franke, Steffen Klingel, Marco Rahm

Author Affiliations +

Proceedings Volume PC13141, Terahertz Emitters, Receivers, and Applications XV; PC1314106 (2024) https://doi.org/10.1117/12.3029567
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

High-frequency on-chip communication necessitates compact plasmonic network designs, shrinking electromagnetic waves to subwavelength scales. While metallic metasurface pathways handle Spoof Surface Plasmon Polaritons (SSPPs) at microwave and terahertz frequencies, real-time reconfigurability remains challenging. We introduce a dynamically tunable metasurface employing a fishbone structure with electrostatically deflectable microbridges. Voltage application lowers the cut-off frequency and shifts the dispersion curve. Being scalable beyond 120 GHz, this leverages micro-electromechanical systems for active manipulation. We developed a tunable SSPP low-pass filter that effectively blocks SSPP transmission upon activation at a SSPP frequency of 106 GHz.

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Citation Download Citation

Lars Franke, Steffen Klingel, and Marco Rahm "Tunable metasurface for spoof surface plasmon polaritons based on microelectromechanical bridge structures", Proc. SPIE PC13141, Terahertz Emitters, Receivers, and Applications XV, PC1314106 (2 October 2024); https://doi.org/10.1117/12.3029567

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KEYWORDS

Surface plasmon polaritons

Bridges

Molecular bridges

Radio propagation

Tunable filters

Wave propagation

Dispersion

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