公开(公告)号：US20230408763A1

公开(公告)日：2023-12-21

申请号：US17807257

申请日：2022-06-16

Applicant: GlobalFoundries U.S. Inc.

Inventor： Zhuojie Wu ,  Yusheng Bian ,  Andreas D. Stricker

IPC: G02B6/122 ,  G02B6/13

CPC classification number: G02B6/122 ,  G02B2006/12126 ,  G02B6/13

Abstract: The disclosure relates to a PIC structure including a photonic component on a semiconductor substrate. A passive optical guard is composed of a light absorbing material and is in proximity to the photonic component. The passive optical guard includes at least a portion in an active semiconductor layer of the semiconductor substrate and may be entirely below a first metal layer. The passive optical guard may include at least one of: a germanium body positioned at least partially in a silicon element in the active semiconductor layer, a silicon body having a high dopant concentration in the active semiconductor layer, and a polysilicon body having a high dopant concentration over the silicon body.

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：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：US11105980B1

公开(公告)日：2021-08-31

申请号：US16841963

申请日：2020-04-07

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Shuren Hu ,  Andreas D. Stricker ,  Karen A. Nummy ,  David B. Riggs ,  Kenneth J. Giewont ,  Jessie C. Rosenberg

IPC: G02B6/28 ,  G02B6/293 ,  H04J14/02

Abstract: Embodiments of the disclosure provide a demultiplexer for processing a multiplexed optical input. The demultiplexer may include a plurality of Mach-Zehnder Interferometric (MZI) stages for converting the multiplexed optical input into a plurality of component optical signals. Each of the plurality of component optical signals corresponds to a respective wavelength-space component of the multiplexed optical input. A plurality of bandpass filters, each having a respective wavelength passband, may receive one of the plurality of component optical signals. The plurality of bandpass filters generates a plurality of demultiplexed optical signals based on the plurality of component optical signals.