Patent ID: 11880065
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method comprising:
forming an edge coupler having a longitudinal axis and a facet;
forming a first waveguide core including a first light absorber;
forming a second waveguide core including a second light absorber,
forming a first ring resonator having a first center point that is spaced from the longitudinal axis of the edge coupler by a first perpendicular distance; and
forming a second ring resonator having a second center point that is spaced from the longitudinal axis of the edge coupler by a second perpendicular distance,
wherein the first ring resonator is positioned adjacent to the first waveguide core, the second ring resonator is positioned adjacent to the second waveguide core, the first light absorber and the second light absorber each comprise germanium, and the first ring resonator and the second ring resonator are symmetrically placed in a lateral direction transverse to the longitudinal axis of the edge coupler.