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Multiband processing of multimode light: combining 3D photonic lanterns with waveguide Bragg gratings

Authors

  • Izabela Spaleniak,

    Corresponding author
    1. MQ Photonics Research Centre, Dept. of Physics and Astronomy, Macquarie University, Australia
    2. Macquarie University Research Centre in Astronomy, Astrophysics & Astrophotonics, Dept. of Physics and Astronomy, Macquarie University, Australia
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  • Simon Gross,

    1. MQ Photonics Research Centre, Dept. of Physics and Astronomy, Macquarie University, Australia
    2. Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS)
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  • Nemanja Jovanovic,

    1. National Astronomical Observatory of Japan, Subaru Telescope, Hilo, Hawaii, U.S.A.
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  • Robert J. Williams,

    1. MQ Photonics Research Centre, Dept. of Physics and Astronomy, Macquarie University, Australia
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  • Jon S. Lawrence,

    1. MQ Photonics Research Centre, Dept. of Physics and Astronomy, Macquarie University, Australia
    2. Macquarie University Research Centre in Astronomy, Astrophysics & Astrophotonics, Dept. of Physics and Astronomy, Macquarie University, Australia
    3. Australian Astronomical Observatory (AAO), North Ryde, Australia
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  • Michael J. Ireland,

    1. MQ Photonics Research Centre, Dept. of Physics and Astronomy, Macquarie University, Australia
    2. Macquarie University Research Centre in Astronomy, Astrophysics & Astrophotonics, Dept. of Physics and Astronomy, Macquarie University, Australia
    3. Australian Astronomical Observatory (AAO), North Ryde, Australia
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  • Michael J. Withford

    1. MQ Photonics Research Centre, Dept. of Physics and Astronomy, Macquarie University, Australia
    2. Macquarie University Research Centre in Astronomy, Astrophysics & Astrophotonics, Dept. of Physics and Astronomy, Macquarie University, Australia
    3. Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS)
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Abstract

The first demonstration of narrowband spectral filtering of multimode light on a 3D integrated photonic chip using photonic lanterns and waveguide Bragg gratings is reported. The photonic lanterns with multi-notch waveguide Bragg gratings were fabricated using the femtosecond direct-write technique in boro-aluminosilicate glass (Corning, Eagle 2000). Transmission dips of up to 5 dB were measured in both photonic lanterns and reference single-mode waveguides with 10.4-mm-long gratings. The result demonstrates efficient and symmetrical performance of each of the gratings in the photonic lantern. Such devices will be beneficial to space-division multiplexed communication systems as well as for units for astronomical instrumentation for suppression of the atmospheric telluric emission from OH lines.

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