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Wideband dynamic microwave frequency identification system using a low-power ultracompact silicon photonic chip

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  • Maurizio Burla

    (Institut National de la Recherche Scientifique—Énergie, Matériaux et Télécommunications (INRS-EMT)
    Present address: Institute of Electromagnetic Fields, ETH Zurich, Gloriastrasse 35, Zurich 8092, Switzerland)

  • Xu Wang

    (University of British Columbia)

  • Ming Li

    (State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences)

  • Lukas Chrostowski

    (University of British Columbia)

  • José Azaña

    (Institut National de la Recherche Scientifique—Énergie, Matériaux et Télécommunications (INRS-EMT))

Abstract

Photonic-based instantaneous frequency measurement (IFM) of unknown microwave signals offers improved flexibility and frequency range as compared with electronic solutions. However, no photonic platform has ever demonstrated the key capability to perform dynamic IFM, as required in real-world applications. In addition, all demonstrations to date employ bulky components or need high optical power for operation. Here we demonstrate an integrated photonic IFM system that can identify frequency-varying signals in a dynamic manner, without any need for fast measurement instrumentation. The system is based on a fully linear, ultracompact system based on a waveguide Bragg grating on silicon, only 65-μm long and operating up to ∼30 GHz with carrier power below 10 mW, significantly outperforming present technologies. These results open a solid path towards identification of dynamically changing signals over tens of GHz bandwidths using a practical, low-cost on-chip implementation for applications from broadband communications to biomedical, astronomy and more.

Suggested Citation

  • Maurizio Burla & Xu Wang & Ming Li & Lukas Chrostowski & José Azaña, 2016. "Wideband dynamic microwave frequency identification system using a low-power ultracompact silicon photonic chip," Nature Communications, Nature, vol. 7(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13004
    DOI: 10.1038/ncomms13004
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