公开(公告)号：US20210278742A1

公开(公告)日：2021-09-09

申请号：US16808613

申请日：2020-03-04

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02F1/313

Abstract: One illustrative device disclosed herein includes a lower waveguide structure and an upper body structure positioned above at least a portion of the lower waveguide structure. In this example, the device also includes a grating structure positioned in the upper body structure, wherein the grating structure comprises a plurality of grating elements that comprise a tunable material whose index of refraction may be changed by application of energy to the tunable material.

公开(公告)号：US11087814B2

公开(公告)日：2021-08-10

申请号：US16508940

申请日：2019-07-11

Applicant: GLOBALFOUNDRIES U.S. INC.

Inventor： Amogh Agrawal ,  Ajey Poovannummoottil Jacob ,  Bipul C. Paul

IPC: G11C11/16

Abstract: The present disclosure relates to a structure including a non-fixed read-cell circuit configured to switch from a first state to a second state based on a state of a memory cell to generate a sensing margin.

公开(公告)号：US20210239903A1

公开(公告)日：2021-08-05

申请号：US16781324

申请日：2020-02-04

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02B6/126 ,  G02B6/125 ,  G02B6/122 ,  G02B6/13

Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A first waveguide core has a first tapered section, a second tapered section, and a section positioned along a longitudinal axis between the first tapered section and the second tapered section. The first tapered section and the second tapered section each narrow in a direction along the longitudinal axis toward the section. A second waveguide core has a first terminating end, a second terminating end, and a section that is arranged between the first and second terminating ends. The section of the second waveguide core is positioned either over or below the section of the first waveguide core.

公开(公告)号：US20210157051A1

公开(公告)日：2021-05-27

申请号：US16690835

申请日：2019-11-21

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02B6/122 ,  G02B6/136

Abstract: Structures for a waveguide and methods of fabricating a structure for a waveguide. A first layer and a second layer are positioned in a layer stack on a surface of a waveguide core. The first layer is positioned in the layer stack between the second layer and the surface of the waveguide core. The waveguide core is composed of a first material having a first refractive index, the first layer is composed of a second material having a second refractive index that is less than the first refractive index of the first material, and the second layer is composed of a third material having a third refractive index that is less than the second refractive index of the second material.

公开(公告)号：US11002916B1

公开(公告)日：2021-05-11

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.

公开(公告)号：US10989877B2

公开(公告)日：2021-04-27

申请号：US16507642

申请日：2019-07-10

Applicant: GLOBALFOUNDRIES U.S. INC.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02B6/293 ,  G02B6/35 ,  F21V8/00 ,  G02B6/136

Abstract: The present disclosure relates to semiconductor structures and, more particularly, to non-planar waveguide structures and methods of manufacture. The structure includes: a first waveguide structure; and a non-planar waveguide structure spatially shifted from the first waveguide structure and separated from the first waveguide structure by an insulator material.

公开(公告)号：US10989876B1

公开(公告)日：2021-04-27

申请号：US16724507

申请日：2019-12-23

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Bo Peng ,  Ajey Poovannummoottil Jacob ,  Yusheng Bian

IPC: G02B6/26

Abstract: Optical coupler structures include a waveguide having waveguide metamaterial segments aligned along a first line. A second insulator is on the first insulator and the waveguide metamaterial segments. A coupler structure is in the second insulator and has coupler metamaterial segments aligned along a second line. The first line and the second line are parallel and within a plane. A portion of the waveguide overlaps a portion of the coupler structure. The waveguide metamaterial segments intersect the plane and have first widths perpendicular to the plane, and the first widths have a first taper along the first line. The coupler metamaterial segments intersect the plane and have second widths in the direction perpendicular to the plane. The second widths have a second taper along the second line that is different from the first taper of the first widths where the waveguide overlaps the second coupler structure.

公开(公告)号：US10955614B1

公开(公告)日：2021-03-23

申请号：US16742165

申请日：2020-01-14

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Bo Peng ,  Ajey Poovannummoottil Jacob ,  Yusheng Bian

IPC: G02B6/12 ,  G02B6/30 ,  G02B6/122 ,  G02B6/124 ,  G02B6/14 ,  H01L21/66 ,  G03F7/20 ,  G02B6/36 ,  F21V8/00 ,  G02B6/34

Abstract: Optical coupler structures have an insulator layer on a substrate, a waveguide structure in the insulator layer, and a cladding layer on the waveguide structure and the insulator layer. Optical grating couplers are on the cladding layer and the waveguide structure is connected between the optical grating couplers. The waveguide structure is discontinuous between the optical grating couplers. The insulator layer includes an array at a transmission blocking region between discontinuous sections of the waveguide structure. This array can be a void opening array of openings or can be a blocking element array of disconnected elements in the insulator layer.

公开(公告)号：US11782214B2

公开(公告)日：2023-10-10

申请号：US17816804

申请日：2022-08-02

Applicant: GlobalFoundries U.S. Inc.

Inventor： Bo Peng ,  Ajey Poovannummoottil Jacob ,  Yusheng Bian

IPC: G02B6/26

CPC classification number: G02B6/26

Abstract: Optical coupler structures include a waveguide having waveguide metamaterial segments aligned along a first line. A second insulator is on the first insulator and the waveguide metamaterial segments. A coupler structure is in the second insulator and has coupler metamaterial segments aligned along a second line. The first line and the second line are parallel and within a plane. A portion of the waveguide overlaps a portion of the coupler structure. The waveguide metamaterial segments intersect the plane and have first widths perpendicular to the plane, and the first widths have a first taper along the first line. The coupler metamaterial segments intersect the plane and have second widths in the direction perpendicular to the plane. The second widths have a second taper along the second line that is different from the first taper of the first widths where the waveguide overlaps the coupler structure.

公开(公告)号：US20220381988A1

公开(公告)日：2022-12-01

申请号：US17816804

申请日：2022-08-02

Applicant: GlobalFoundries U.S. Inc.

Inventor： Bo Peng ,  Ajey Poovannummoottil Jacob ,  Yusheng Bian

IPC: G02B6/26

Abstract: Optical coupler structures include a waveguide having waveguide metamaterial segments aligned along a first line. A second insulator is on the first insulator and the waveguide metamaterial segments. A coupler structure is in the second insulator and has coupler metamaterial segments aligned along a second line. The first line and the second line are parallel and within a plane. A portion of the waveguide overlaps a portion of the coupler structure. The waveguide metamaterial segments intersect the plane and have first widths perpendicular to the plane, and the first widths have a first taper along the first line. The coupler metamaterial segments intersect the plane and have second widths in the direction perpendicular to the plane. The second widths have a second taper along the second line that is different from the first taper of the first widths where the waveguide overlaps the coupler structure.