Patent ID: 9709740
Date: 2017-07-18
CPC Classifications: G02B,H01L

Claim:
1. A method of forming an integrated structure, the method comprising the acts of: providing a first substrate having an upper surface; after providing the first substrate, removing material from the upper surface only partially through a thickness of the first substrate to form a shallow trench isolation region in the upper surface, the shallow trench isolation region extending only partially through a thickness of the first substrate; after forming the shallow trench isolation region, depositing a dielectric material having a first index of refraction over the upper surface and in the shallow trench isolation region; planarizing the dielectric material such that the dielectric material fills the shallow trench isolation region; forming a photonics area on a second substrate; bonding the first and second substrates together such that the upper surface of the first substrate faces the second substrate and the shallow trench isolation region is aligned with the photonics area; and forming a waveguide within the photonics area, wherein the waveguide comprises a core formed of a material having a second index of refraction greater than the first index of refraction.