公开(公告)号：US11199672B1

公开(公告)日：2021-12-14

申请号：US16901509

申请日：2020-06-15

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Judson Holt ,  Yusheng Bian ,  Andreas D. Stricker ,  Colleen Meagher ,  Michal Rakowski

IPC: G02B6/42 ,  H01L31/0232 ,  G02B6/12 ,  G02B6/13 ,  H01L31/18 ,  H01L31/028

Abstract: Structures for a photodetector and methods of fabricating a structure for a photodetector. A photodetector may have a light-absorbing layer comprised of germanium. A waveguide core may be coupled to the light-absorbing layer. The waveguide core may be comprised of a dielectric material, such as silicon nitride. Another waveguide core, which may be comprised of a different material such as single-crystal silicon, may be coupled to the light-absorbing layer.

公开(公告)号：US20210141156A1

公开(公告)日：2021-05-13

申请号：US16682502

申请日：2019-11-13

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob ,  Michal Rakowski ,  Bo Peng

IPC: G02B6/34

Abstract: Structures including a grating coupler and methods of fabricating such structures. The structure includes a waveguide core, a bend, and a grating coupler coupled to the waveguide core by the bend. The grating coupler includes grating structures that are positioned with a spaced relationship in a layer stack above the bend.