Bragg Filters for Integrated Photonic Circuitry

ORAL

Abstract


We report the design, fabrication, and measurement of waveguide Bragg filters for use in integrated Raman- and fluorescence-based spectroscopy and sensing systems. A periodic effective index was produced by a series of silicon nitride (SiN) patches located adjacent to and on both sides of a straight SiN waveguide. A chirp was applied to the length and spacing of the patches to broaden the reflection bandwidth. The filters were simulated using an eigenmode expansion solver and manufactured at a photonic integrated circuit (PIC) foundry.

*This material is based on research sponsored by Air Force Research Laboratory under agreement number FA8650-15-2-5220.

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Presenters

  • Qingying Chen

    • Department of Physics and Engineering Physics, University of Tulsa, Tulsa 74104, United States

Authors

  • Qingying Chen

    • Department of Physics and Engineering Physics, University of Tulsa, Tulsa 74104, United States

  • Scott Holmstrom

    • Department of Physics and Engineering Physics, University of Tulsa, Tulsa 74104, United States

  • Nathan Tyndall

    • Optical Science Division, Naval Research Lab, Washington DC 20375, United States

  • Todd Stievater

    • Optical Science Division, Naval Research Lab, Washington DC 20375, United States