Patent ID: 11960116
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A structure, comprising:
a semiconductor substrate;
a device layer disposed over the semiconductor substrate;
an interconnect structure disposed on the device layer, the device layer comprising an optical waveguide coupler, and the optical waveguide coupler comprising:
a first waveguide, comprising a first strip portion and a first tapered tip portion connected to the first strip portion; and
a second waveguide, comprising a second strip portion and a second tapered tip portion connected to the second strip portion, wherein the first tapered tip portion of the first waveguide is optically coupled to the second tapered tip portion of the second waveguide, and the first waveguide and the second waveguide are configured to guide a light, and
wherein the first tapered tip portion is adjacent to the second tapered tip portion, a refractive index of the first tapered tip portion is greater than a refractive index of the second tapered tip portion, and the width of the second end of the first tapered tip portion is smaller than the width of the second end of the second tapered tip portion.