Nonreciprocal Graphene Devices and Antennas Based on Spatiotemporal Modulation

  • D. Correas-Serrano /
  • J. S. Gomez-Diaz /
  • D. L. Sounas /
  • Y. Hadad /
  • A. Alvarez-Melcon /
  • A. Alu
Journal ar
IEEE Antennas and Wireless Propagation Letters
  • Volumen: 15
  • Fecha: 01 January 2016
  • Páginas: 1529-1533
  • ISSN: 15361225
  • Source Type: Journal
  • DOI: 10.1109/LAWP.2015.2510818
  • Document Type: Article
  • Publisher: Institute of Electrical and Electronics Engineers Inc.
© 2002-2011 IEEE. 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.

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