公开(公告)号：US11378743B1

公开(公告)日：2022-07-05

申请号：US17146864

申请日：2021-01-12

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Roderick A. Augur ,  Kenneth J. Giewont ,  Karen Nummy ,  Edward Kiewra ,  Steven M. Shank

IPC: G02B6/122 ,  G02B6/34 ,  G02B6/136 ,  G02B6/12

Abstract: Structures including a grating coupler and methods of fabricating a structure including a grating coupler. The structure includes structure includes a dielectric layer on a substrate, a first waveguide core positioned in a first level over the dielectric layer, and a second waveguide core positioned in a second level over the dielectric layer. The second level differs in elevation above the dielectric layer from the first level. The first waveguide core includes a tapered section. The structure further includes a grating coupler having a plurality of segments positioned in the second level adjacent to the second waveguide core. The segments of the grating coupler and the tapered section of the first waveguide core are positioned in an overlapping arrangement.

公开(公告)号：US20220146862A1

公开(公告)日：2022-05-12

申请号：US17091394

申请日：2020-11-06

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian

IPC: G02F1/01

Abstract: Structures including an edge coupler and methods of fabricating a structure including an edge coupler. The edge coupler includes a waveguide core having an end surface that terminates proximate to an edge of a substrate. The waveguide core contains a material having a first state with a first refractive index in response to an applied stimulus and a second state with a second refractive index different from the first refractive index.

公开(公告)号：US20220146751A1

公开(公告)日：2022-05-12

申请号：US17095865

申请日：2020-11-12

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian

IPC: G02B6/28 ,  G02B6/122 ,  G02B6/12

Abstract: Structures for an optical power splitter and methods of forming a structure for an optical power splitter. A first waveguide core includes a portion positioned over a multimode interference region, a second waveguide core includes a portion positioned over the multimode interference region, and a third waveguide core includes a portion positioned over the multimode interference region. The first waveguide core provides an input port to the optical power splitter. The second waveguide core provides a first output port from the optical power splitter, and the third waveguide core provides a second output port from the optical power splitter.

公开(公告)号：US11329087B2

公开(公告)日：2022-05-10

申请号：US16829553

申请日：2020-03-25

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Michel Rakowski ,  Won Suk Lee ,  Asif Chowdhury ,  Ajey Poovannummoottil Jacob

IPC: H01L27/146 ,  H01L31/101 ,  H01L31/0232

Abstract: Structures for a photodetector and methods of fabricating a structure for a photodetector. The structure includes a light-absorbing region having a side edge, an anode adjacent to the side edge of the light-absorbing region, and a cathode adjacent to the side edge of the light-absorbing region.

公开(公告)号：US11322636B2

公开(公告)日：2022-05-03

申请号：US16799183

申请日：2020-02-24

Applicant: GLOBALFOUNDRIES U.S. INC.

Inventor： Asif J. Chowdhury ,  Ajey Poovannummoottil Jacob ,  Yusheng Bian ,  Michal Rakowski

IPC: H01L31/107 ,  H01L31/0232 ,  H01L31/02

Abstract: The present disclosure relates to semiconductor structures and, more particularly, to photodiode structures and methods of manufacture. The structure includes: a charge region having a first doping concentration and a variable width; a multiplication region adjacent to the charge region; and an absorption region adjacent to the variable width charge region.

公开(公告)号：US20220057575A1

公开(公告)日：2022-02-24

申请号：US17453533

申请日：2021-11-04

Applicant: GlobalFoundries U.S. Inc.

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

IPC: G02B6/122

Abstract: Embodiments of the disclosure provide an integrated circuit (IC) structure, including an absorber layer separated from an optical grating coupler by a cladding material. The absorber is positioned to receive light reoriented through the optical grating coupler.

公开(公告)号：US11221506B2

公开(公告)日：2022-01-11

申请号：US16799100

申请日：2020-02-24

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Steven M. Shank ,  Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02F1/01 ,  G02F1/035

Abstract: Structures for a polarization switch and methods of fabricating a structure for a polarization switch. A waveguide core is located on a substrate. The waveguide core is composed of silicon nitride. An active layer is positioned proximate to a section of the waveguide core. The active layer composed of a phase change material having a first state with a first refractive index and a second state with a second refractive index.

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：US20210294035A1

公开(公告)日：2021-09-23

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

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：US11125944B2

公开(公告)日：2021-09-21

申请号：US16741792

申请日：2020-01-14

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

IPC: G02B6/126 ,  G02B6/13 ,  G02B6/125 ,  G02B6/12

Abstract: Disclosed are embodiments of an on-chip polarizer and of methods of forming the polarizer. The polarizer includes first and second waveguides with different shapes at different design levels above a substrate. The first waveguide has a main body between an input end and an output end. The second waveguide is spiral in shape with an inner end and with an outer end that is evanescently coupled to the main body of the first waveguide. Light signals, including first light signals with a first type polarization and second light signals with a second type polarity, are received at the input end of the first waveguide. The first waveguide passes the first light signals to the output end and passes at least some second light signals out the main body and into the outer end of the second waveguide. The second waveguide attenuates the received second light signals.