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Optoelectronic mixing with high-frequency graphene transistors

Author

Listed:
  • A. Montanaro

    (Thales Research and Technology
    Photonic Networks and Technologies Lab - CNIT)

  • W. Wei

    (Univ. Lille, CNRS, Centrale Lille, Univ. Polyechnique Hauts-de-France, UMR8520 - IEMN Institut d’Electronique, de Microélectronique et de Nanotechnologie)

  • D. Fazio

    (Cambridge Graphene Centre, University of Cambridge)

  • U. Sassi

    (Cambridge Graphene Centre, University of Cambridge)

  • G. Soavi

    (Cambridge Graphene Centre, University of Cambridge)

  • P. Aversa

    (Thales Research and Technology
    LSI, CEA/DRF/lRAMIS, Ecole Polytechnique, CNRS, lnstitut Polytechnique de Paris)

  • A. C. Ferrari

    (Cambridge Graphene Centre, University of Cambridge)

  • H. Happy

    (Univ. Lille, CNRS, Centrale Lille, Univ. Polyechnique Hauts-de-France, UMR8520 - IEMN Institut d’Electronique, de Microélectronique et de Nanotechnologie)

  • P. Legagneux

    (Thales Research and Technology)

  • E. Pallecchi

    (Univ. Lille, CNRS, Centrale Lille, Univ. Polyechnique Hauts-de-France, UMR8520 - IEMN Institut d’Electronique, de Microélectronique et de Nanotechnologie)

Abstract

Graphene is ideally suited for optoelectronics. It offers absorption at telecom wavelengths, high-frequency operation and CMOS-compatibility. We show how high speed optoelectronic mixing can be achieved with high frequency (~20 GHz bandwidth) graphene field effect transistors (GFETs). These devices mix an electrical signal injected into the GFET gate and a modulated optical signal onto a single layer graphene (SLG) channel. The photodetection mechanism and the resulting photocurrent sign depend on the SLG Fermi level (EF). At low EF ( 130 meV), a negative photobolometric current appears. This allows our devices to operate up to at least 67 GHz. Our results pave the way for GFETs optoelectronic mixers for mm-wave applications, such as telecommunications and radio/light detection and ranging (RADAR/LIDARs.)

Suggested Citation

  • A. Montanaro & W. Wei & D. Fazio & U. Sassi & G. Soavi & P. Aversa & A. C. Ferrari & H. Happy & P. Legagneux & E. Pallecchi, 2021. "Optoelectronic mixing with high-frequency graphene transistors," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-22943-1
    DOI: 10.1038/s41467-021-22943-1
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    Cited by:

    1. Alberto Montanaro & Giulia Piccinini & Vaidotas Mišeikis & Vito Sorianello & Marco A. Giambra & Stefano Soresi & Luca Giorgi & Antonio D’Errico & K. Watanabe & T. Taniguchi & Sergio Pezzini & Camilla , 2023. "Sub-THz wireless transmission based on graphene-integrated optoelectronic mixer," Nature Communications, Nature, vol. 14(1), pages 1-14, December.

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