Patent ID: 11914265
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A phase shifter, comprising:
a light input end;
a light output end;
a first semiconductor material;
a second semiconductor material different from the first semiconductor material, the second semiconductor material contacting the first semiconductor material along a boundary area, wherein the boundary area forms at least one discrete multi-pointed enclosed shape when viewed from a longitudinal cross sectional view extending from the light input end to the light output end, and wherein the boundary area extends from one end of a core width of the phase shifter to a second end of the core width of the phase shifter; and
a core and a cladding, wherein the core is part of a folded waveguide phase shifter in which light may propagate through from the light input end to the light output end.