Patent ID: 11934051
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A method comprising:
forming a waveguide core on a semiconductor substrate, wherein the waveguide core includes a phase shifter;
forming a slotted shield in an interconnect structure that is located over the waveguide core and the semiconductor substrate, wherein the slotted shield includes a first plurality of segments, a first plurality of slots separating the first plurality of segments, a second plurality of segments, and a second plurality of slots separating the second plurality of segments;
forming a first transmission line in the interconnect structure, wherein the first plurality of segments of the slotted shield are positioned between the first transmission line and the semiconductor substrate;
forming a second transmission line in the interconnect structure that is laterally spaced from the first transmission line; and
forming a plurality of interconnections that connect the first transmission line with the first plurality of segments,
wherein the first plurality of segments are positioned between the first transmission line and the semiconductor substrate, the first plurality of segments and the second plurality of segments are disposed on opposite side edges of the waveguide core, and a first minimum distance between the first plurality of segments and the second plurality of segments is less than a second minimum distance between the first transmission line and the second transmission line.