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Integrated optical auto-correlator based on third-harmonic generation in a silicon photonic crystal waveguide

Author

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  • Christelle Monat

    (Université de Lyon, Institut des Nanotechnologies de Lyon (INL) UMR 5270, Ecole Centrale de Lyon
    CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • Christian Grillet

    (Université de Lyon, Institut des Nanotechnologies de Lyon (INL) UMR 5270, Ecole Centrale de Lyon
    CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • Matthew Collins

    (CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • Alex Clark

    (CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • Jochen Schroeder

    (CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • Chunle Xiong

    (CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • Juntao Li

    (School of Physics and Astronomy, University of St Andrews, St Andrews
    Present address: State Key Laboratory of Optoelectronic Materials & Technologies, Sun Yat-sen University, China)

  • Liam O'Faolain

    (School of Physics and Astronomy, University of St Andrews, St Andrews)

  • Thomas F. Krauss

    (School of Physics and Astronomy, University of St Andrews, St Andrews
    Present address: Department of Physics, University of York, Heslington York YO10 5DD, UK)

  • Benjamin J. Eggleton

    (CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • David J. Moss

    (CUDOS, Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney
    Present address: School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001, Australia)

Abstract

The ability to use coherent light for material science and applications is linked to our ability to measure short optical pulses. While free-space optical methods are well established, achieving this on a chip would offer the greatest benefit in footprint, performance and cost, and allow the integration with complementary signal-processing devices. A key goal is to achieve operation at sub-watt peak power levels and on sub-picosecond timescales. Previous integrated demonstrations require either a temporally synchronized reference pulse, an off-chip spectrometer or long tunable delay lines. Here we report a device capable of achieving single-shot time-domain measurements of near-infrared picosecond pulses based on an ultra-compact integrated CMOS-compatible device, which could operate without any external instrumentation. It relies on optical third-harmonic generation in a slow-light silicon waveguide. Our method can also serve as an in situ diagnostic tool to map, at visible wavelengths, the propagation dynamics of near-infrared pulses in photonic crystals.

Suggested Citation

  • Christelle Monat & Christian Grillet & Matthew Collins & Alex Clark & Jochen Schroeder & Chunle Xiong & Juntao Li & Liam O'Faolain & Thomas F. Krauss & Benjamin J. Eggleton & David J. Moss, 2014. "Integrated optical auto-correlator based on third-harmonic generation in a silicon photonic crystal waveguide," Nature Communications, Nature, vol. 5(1), pages 1-8, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4246
    DOI: 10.1038/ncomms4246
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