Patent ID: 11953719
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. An optical device comprising:
a substrate;
a first optical layer on the substrate, wherein the first optical layer comprises a top surface, a first sidewall and a second sidewall opposite to the first sidewall;
a high k layer disposed on the top surface of the first optical layer; and
a second optical layer on the high k layer, wherein the second optical layer comprises a top surface, a third sidewall and a fourth sidewall opposite to the third sidewall, wherein the first optical layer includes a Transverse Magnetic (TM) transmission mode and the second optical layer includes a Transverse Electric (TE) transmission mode, and wherein when the first optical layer and the second optical layer project on the substrate, a projection area of the second optical layer falls within a projection area of the first optical layer from a top view.