Patent ID: 11860414
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A structure for an edge coupler, the structure comprising:
a first dielectric layer including an edge;
a waveguide core region on the first dielectric layer, the waveguide core region having a tapered section with an end surface that terminates adjacent to the edge of the first dielectric layer; and
a second dielectric layer on the waveguide core region and the first dielectric layer, the second dielectric layer including a first trench and a second trench each positioned adjacent to the tapered section of the waveguide core region,
wherein the tapered section of the waveguide core region is laterally positioned between the first trench and the second trench, the first dielectric layer is positioned on a substrate, the substrate includes a groove that is positioned beneath the waveguide core region, and the first dielectric layer includes a portion that is positioned between the groove and the waveguide core region.