Patent ID: 11940659
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An optical integrated circuit (IC) structure comprising:
a substrate comprising a fiber slot formed in an upper surface of the substrate and extending from an edge of the substrate, and an undercut formed in the upper surface and extending from the fiber slot;
a semiconductor layer disposed on the substrate;
a dielectric structure disposed on the semiconductor layer;
an interconnect structure disposed in the dielectric structure;
a plurality of vents that extend through a coupling region of the dielectric structure, wherein the plurality of vents each expose the undercut;
a fiber cavity that extends through the coupling region of the dielectric structure and exposes the fiber slot; and
a barrier ring disposed in the dielectric structure, wherein the barrier ring surrounds the interconnect structure and is routed around a perimeter of the coupling region.