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Waveguide-to-waveguide couplers with multiple tapers

  • US 10,429,582 B1
  • Filed: 05/02/2018
  • Issued: 10/01/2019
  • Est. Priority Date: 05/02/2018
  • Status: Active Grant
First Claim
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1. A structure for a waveguide-to-waveguide coupler, the structure comprising:

  • a first waveguide taper;

    a first waveguide coupled to the first waveguide taper, the first waveguide and the first waveguide taper having a first arrangement in which the first waveguide terminates the first arrangement;

    a second waveguide taper; and

    a second waveguide coupled to the second waveguide taper, the second waveguide and the second waveguide taper having a second arrangement in which the second waveguide terminates the second arrangement,wherein the first waveguide and the first waveguide taper are comprised of silicon, the second waveguide and the second waveguide taper are comprised of silicon nitride, the second waveguide is arranged in a vertical direction directly and primarily over the first waveguide taper, and the second waveguide taper is arranged in the vertical direction directly and primarily over the first waveguide.

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