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

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number7361966
Pages (from-to)1529-1533
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
StatePublished - 2016
Externally publishedYes


  • Isolators
  • leaky-wave antennas
  • nonreciprocity
  • spatiotemporal modulation
  • surface plasmons
  • waveguides


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