Nonreciprocal Graphene Devices and Antennas Based on Spatiotemporal Modulation

A new class of magnet-free nonreciprocal plasmonic devices operating at terahertz (THz) frequencies is introduced based on the spatiotemporal modulation of graphene's conductivity. The proposed components are based on graphene parallel-plate waveguides with double-gated electrodes, which allow...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2016, Vol.15, p.1529-1532
Main Authors: Correas-Serrano, D., Gomez-Diaz, J. S., Sounas, D. L., Hadad, Y., Alvarez-Melcon, A., Alu, A.
Format: Article
Language:English
Subjects:
Antennas
Conductivity
Frequency modulation
Graphene
Isolators
leaky-wave antennas
nonreciprocity
Plasmons
spatiotemporal modulation
Spatiotemporal phenomena
surface plasmons
waveguides
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Summary:A new class of magnet-free nonreciprocal plasmonic devices operating at terahertz (THz) frequencies is introduced based on the spatiotemporal modulation of graphene's conductivity. The proposed components are based on graphene parallel-plate waveguides with double-gated electrodes, which allow independent manipulation of graphene properties in both space and time. We employ this structure for the design of plasmonic isolators and leaky-wave antennas at THz frequencies and study the effect of graphene and modulation parameters on their response. We envision that this technology may pave the way towards silicon-compatible fully planar nonreciprocal plasmonic components and antennas with enhanced functionalities at THz, with important applications in biosensing, imaging, and intra/interchip communications.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2015.2510818