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Integration of photonic nanojets and semiconductor nanoparticles for enhanced all-optical switching

Author

Listed:
  • Brandon Born

    (School of Engineering, The University of British Columbia, Okanagan campus)

  • Jeffrey D. A. Krupa

    (School of Engineering, The University of British Columbia, Okanagan campus)

  • Simon Geoffroy-Gagnon

    (School of Engineering, The University of British Columbia, Okanagan campus)

  • Jonathan F. Holzman

    (School of Engineering, The University of British Columbia, Okanagan campus)

Abstract

All-optical switching is the foundation of emerging all-optical (terabit-per-second) networks and processors. All-optical switching has attracted considerable attention, but it must ultimately support operation with femtojoule switching energies and femtosecond switching times to be effective. Here we introduce an all-optical switch architecture in the form of a dielectric sphere that focuses a high-intensity photonic nanojet into a peripheral coating of semiconductor nanoparticles. Milli-scale spheres coated with Si and SiC nanoparticles yield switching energies of 200 and 100 fJ with switching times of 10 ps and 350 fs, respectively. Micro-scale spheres coated with Si and SiC nanoparticles yield switching energies of 1 pJ and 20 fJ with switching times of 2 ps and 270 fs, respectively. We show that femtojoule switching energies are enabled by localized photoinjection from the photonic nanojets and that femtosecond switching times are enabled by localized recombination within the semiconductor nanoparticles.

Suggested Citation

  • Brandon Born & Jeffrey D. A. Krupa & Simon Geoffroy-Gagnon & Jonathan F. Holzman, 2015. "Integration of photonic nanojets and semiconductor nanoparticles for enhanced all-optical switching," Nature Communications, Nature, vol. 6(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9097
    DOI: 10.1038/ncomms9097
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