公开(公告)号：US11204463B1

公开(公告)日：2021-12-21

申请号：US16931771

申请日：2020-07-17

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Benjamin V. Fasano ,  Andreas D. Stricker ,  Hanyi Ding ,  Yusheng Bian ,  Bo Peng

IPC: G02B6/122 ,  G02B6/12

Abstract: Embodiments of the disclosure provide an integrated circuit (IC) structure, including an optical medium for light signals; and an optical grating coupler coupled to the optical medium. The optical grating coupler is configured to reorient light from the optical medium. A cladding material is over the optical grating coupler. An absorber layer is over the cladding material, and vertically above the optical grating coupler.

公开(公告)号：US11187852B1

公开(公告)日：2021-11-30

申请号：US17160710

申请日：2021-01-28

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Domingo Ferrer ,  Roderick A. Augur ,  Michal Rakowski

IPC: G02B6/02 ,  G02B6/293 ,  G02B6/34 ,  G02B6/028 ,  G02B6/36

Abstract: Structures that include a Bragg grating and methods of fabricating a structure that includes a Bragg grating. The structure includes a waveguide core and a Bragg grating having a plurality of segments positioned with a spaced arrangement adjacent to the waveguide core. Each segment includes one or more exterior surfaces. The structure further includes a silicide layer located on the one or more exterior surfaces of each segment.

公开(公告)号：US11181693B1

公开(公告)日：2021-11-23

申请号：US17076326

申请日：2020-10-21

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian

IPC: G02B6/26 ,  G02B6/28

Abstract: Structures for a directional coupler and methods of fabricating a structure for a directional coupler. A first waveguide core has a first section, a second waveguide core has a second section laterally adjacent to the first section, a third waveguide core has a first taper, a second taper, and a third section longitudinally positioned between the first taper and the second taper, and a fourth waveguide core has a first taper, a second taper, and a fourth section longitudinally positioned between the first taper and the second taper. The fourth section is laterally adjacent to the third section, and the third section and the fourth section are positioned either over or under the first section and the second section.

公开(公告)号：US11177404B2

公开(公告)日：2021-11-16

申请号：US16740719

申请日：2020-01-13

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Ajey Poovannummoottil Jacob ,  Yusheng Bian ,  Steven Shank

IPC: H01L31/0352 ,  H01L31/0232 ,  H01L31/18 ,  H01L31/028 ,  H01L31/103

Abstract: A photodetector disclosed herein includes an N-doped waveguide structure defined in a semiconductor material, wherein the N-doped waveguide structure comprises a plurality of first fins. Each adjacent pair of the plurality of first fins is separated by a trench formed in the semiconductor material. The photodetector also includes a detector structure positioned on the N-doped waveguide structure, wherein a portion of the detector structure is positioned laterally between the plurality of first fins. The detector structure comprises a single crystal semiconductor material. The photodetector also includes a first diffusion region that extends from the bottom surface of the trench into the semiconductor material, wherein the first diffusion region comprises atoms of the single crystal semiconductor material of the detector structure.

公开(公告)号：US11150407B2

公开(公告)日：2021-10-19

申请号：US16821299

申请日：2020-03-17

Applicant: GLOBALFOUNDRIES U.S. Inc. ,  KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob ,  Sujith Chandran

IPC: G02B6/122 ,  G02B6/124 ,  G02B6/30 ,  G02B6/125 ,  G02B6/34 ,  G02B6/26

Abstract: Structures for an optical coupler and methods of fabricating a structure for an optical coupler. A first waveguide core has a first tapered section and a second waveguide core has a second tapered section positioned adjacent to the first tapered section. The first tapered section has a first shape determined by a first non-linear function, and the second tapered section has a second shape determined by a second non-linear function.

公开(公告)号：US20210311253A1

公开(公告)日：2021-10-07

申请号：US16837149

申请日：2020-04-01

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Bo Peng

IPC: G02B6/125 ,  G02B6/122

Abstract: Structures for an optical coupler and methods of fabricating a structure for an optical coupler. A coupling section has a plurality of segments arranged with a pitch, a first waveguide core has a section extending longitudinally over the first plurality of segments of the coupling section, and a second waveguide core has a section extending longitudinally over the coupling section. The section of the second waveguide core laterally spaced from the section of the first waveguide core by a given distance.

公开(公告)号：US11088503B2

公开(公告)日：2021-08-10

申请号：US16525878

申请日：2019-07-30

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: H01S3/16 ,  H01S3/063

Abstract: One illustrative laser disclosed herein includes a gain medium layer having a first width in a transverse direction that is orthogonal to a laser emitting direction of the laser, and an upper light-confining structure positioned above an upper surface of the gain medium layer, wherein the upper light-confining structure has a second width in the transverse direction that is equal to or less than the first width and comprises at least one material having an index of refraction that is at least 2.0. The laser also includes a lower light-confining structure positioned below a lower surface of the gain medium layer, wherein the lower light-confining structure has a third width in the transverse direction that is equal to or less than the first width and comprises at least one material having an index of refraction that is at least 2.0.

公开(公告)号：US11079544B2

公开(公告)日：2021-08-03

申请号：US16531819

申请日：2019-08-05

Applicant: GLOBALFOUNDRIES U.S. INC.

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

IPC: G02B6/12 ,  G02B6/24

Abstract: The present disclosure relates to semiconductor structures and, more particularly, to Waveguide absorbers and methods of manufacture are provided. The waveguide structure includes a photonics component and a spirally configured waveguide absorber coupled to a node of the photonics component which reduces optical return loss.

公开(公告)号：US11067751B2

公开(公告)日：2021-07-20

申请号：US16597323

申请日：2019-10-09

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Colleen Meagher ,  Karen Nummy ,  Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02B6/122 ,  G02B6/136 ,  G02B6/12

Abstract: Structures including a waveguide core and methods of fabricating a structure that includes a waveguide core. A dielectric layer including a trench with a first sidewall and a second sidewall, and a waveguide core positioned inside the trench between the first and second sidewalls of the trench. The waveguide core has a first width, and the trench has a second width between the first and second sidewalls that is greater than the first width.

公开(公告)号：US11067749B2

公开(公告)日：2021-07-20

申请号：US16690835

申请日：2019-11-21

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02B6/138 ,  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.