Patent ID: 11906777
Assignee: INTEL CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 16:
17. A wavelength-division multiplexing (WDM) transceiver, comprising:
a substrate with a first z-height measured in a z-direction at a first portion of the substrate and a second z-height measured in the z-direction at a second portion of the substrate that is different than the first portion;
a first insulator layer over the first portion of the substrate;
a second insulator layer over the second portion of the substrate;
a first waveguide over the first insulator layer, wherein a portion of the first waveguide tapers in a direction perpendicular to the z-direction; and
a second waveguide over the second insulator layer, wherein the second waveguide is coupled with a portion of the first waveguide, the first waveguide includes silicon, the second waveguide includes silicon and nitrogen, and the second waveguide does not taper in the direction perpendicular to the z-direction.