公开(公告)号：US11415744B1

公开(公告)日：2022-08-16

申请号：US17170203

申请日：2021-02-08

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Alec Hammond ,  Yusheng Bian ,  Michal Rakowski ,  Won Suk Lee ,  Asif J. Chowdhury ,  Roderick A. Augur ,  Abdelsalam Aboketaf

IPC: G02B6/293 ,  G02B6/12 ,  G02B6/13 ,  G02B1/00

Abstract: Structures for a wavelength-division multiplexing filter and methods of forming a structure for a wavelength-division multiplexing filter. The structure includes a first slab having a first perimeter, a first waveguide core coupled to the first slab, and a plurality of second waveguide cores coupled to the first slab. A second slab is positioned to overlap with the first slab. The second slab includes a second perimeter and openings that are distributed inside the second perimeter. The openings of the second slab penetrate through the second slab.

公开(公告)号：US20220221714A1

公开(公告)日：2022-07-14

申请号：US17146509

申请日：2021-01-12

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Won Suk Lee ,  Thomas G. Weeks, III ,  Michal Rakowski ,  Yusheng Bian ,  Roderick A. Augur ,  Alexander L. Martin ,  Petar I. Todorov

IPC: G02B27/00 ,  G02B6/125

Abstract: Disclosed are a system, method, software tool, etc. for generating a layout indicating the paths for balanced optical waveguides (WGs) of a WG bus. A grid is used to route paths, which extend between corresponding first and second input/output nodes, respectively, and which are within boundaries of a defined area. The paths are automatically rerouted to balance for length and number of bends without overly increasing the lengths of or number of bends in those paths and further without moving the input/output nodes or falling outside the established boundaries. Automatic rerouting of the paths is performed iteratively based on results of various intersection operations related to different path-specific sets of points on the grid to determine when and where to insert additional linear segments and bends into the paths. Then, a layout indicating the balanced paths is generated. Also disclosed is a WG bus structure with balanced optical WGs.

公开(公告)号：US11280961B1

公开(公告)日：2022-03-22

申请号：US17113567

申请日：2020-12-07

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Alec Hammond ,  Yusheng Bian ,  Michal Rakowski ,  Won Suk Lee ,  Asif J. Chowdhury ,  Roderick A. Augur

IPC: G02B6/125 ,  G02B6/12

Abstract: Structures for an optical power splitter and methods of forming a structure for an optical power splitter. A splitter body defines a multimode interference region of the optical power splitter. A first side element positioned adjacent to a first side surface of the splitter body, and a second side element positioned adjacent to a second side surface of the splitter body.

公开(公告)号：US20210389521A1

公开(公告)日：2021-12-16

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

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：US20210318490A1

公开(公告)日：2021-10-14

申请号：US16842887

申请日：2020-04-08

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Bo Peng ,  Yusheng Bian ,  Michal Rakowski ,  Tymon Barwicz

IPC: G02B6/122 ,  G02F1/225

Abstract: One illustrative backscattering generator disclosed herein includes a low-reflection waveguide structure, a slot waveguide structure comprising a first waveguide, a second waveguide and a slot located between the first waveguide and the second waveguide, and a variable direction coupler operatively coupled to the low-reflection waveguide structure and the slot waveguide structure.

公开(公告)号：US11029465B1

公开(公告)日：2021-06-08

申请号：US16832023

申请日：2020-03-27

Applicant: GLOBALFOUNDRIES U.S. Inc.

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

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

Abstract: One illustrative device disclosed herein includes a micro-ring modulator that comprises an inner ring, an outer ring and a doped waveguide ring positioned between the inner ring and the outer ring. The device also includes an upper bus waveguide that is positioned vertically above at least a portion of the doped waveguide ring and at least a portion of the outer ring.

公开(公告)号：US20250116819A1

公开(公告)日：2025-04-10

申请号：US18376864

申请日：2023-10-05

Applicant: GlobalFoundries U.S. Inc.

Inventor： Aneesh Dash ,  Michal Rakowski ,  Avijit Chatterjee ,  Rupa Gopinath Minasamudram

IPC: G02B6/35

Abstract: Structures for an optical switch and methods of forming such structures. The structure comprises a first waveguide core including a first portion and a second portion, a second waveguide core including a first portion and a second portion, a ring resonator having a first portion adjacent to the first portion of the first waveguide core and a second portion adjacent to the first portion of the second waveguide core, and an optical coupler coupled to the second portion of first waveguide core and the second portion of the second waveguide core. The first portion of the ring resonator is spaced from the first portion of the first waveguide core by a first gap over a first light coupling region, and the second portion of the ring resonator is spaced from the first portion of the second waveguide core by a second gap over a second light coupling region.

公开(公告)号：US12265255B2

公开(公告)日：2025-04-01

申请号：US17944252

申请日：2022-09-14

Applicant: GlobalFoundries U.S. Inc.

Inventor： Yusheng Bian ,  Steven M. Shank ,  Judson Holt ,  Michal Rakowski ,  Bartlomiej Jan Pawlak

IPC: G02B6/122 ,  G02B6/13

Abstract: Structures including an electro-absorption modulator and methods of forming such structures. The structure comprises a waveguide core including a first tapered section, a second tapered section, and a longitudinal axis. The first tapered section and the second tapered section are aligned along the longitudinal axis. The structure further comprises a first waveguide taper overlapping the first tapered section of the waveguide core, a second waveguide taper overlapping the second tapered section of the waveguide core, and a multiple-layer structure on the waveguide core between the first waveguide taper and the second waveguide taper.

公开(公告)号：US12001056B2

公开(公告)日：2024-06-04

申请号：US17834375

申请日：2022-06-07

Applicant: GlobalFoundries U.S. Inc.

Inventor： Bartlomiej Jan Pawlak ,  Michal Rakowski ,  Yusheng Bian

IPC: G02B6/293 ,  G02B6/42

CPC classification number: G02B6/2934 ,  G02B6/4215

Abstract: Structures including stacked photonics chips and methods of fabricating a structure including stacked photonics chips. The structure comprises a first chip including a first waveguide core, a ring resonator adjacent to a portion of the first waveguide core, and a first dielectric layer over the first waveguide core and the ring resonator. The first dielectric layer has a first surface. The structure further comprises a second chip including a second waveguide core and a second dielectric layer over the second waveguide core. The second dielectric layer has a second surface adjacent to the first surface of the first dielectric layer, and the second waveguide core is positioned adjacent to the ring resonator.

公开(公告)号：US20230288321A1

公开(公告)日：2023-09-14

申请号：US17689120

申请日：2022-03-08

Applicant: GlobalFoundries U.S. Inc.

Inventor： Bartlomiej J. Pawlak ,  Michal Rakowski

IPC: G01N21/31 ,  G02B6/293

CPC classification number: G01N21/31 ,  G02B6/29343 ,  G02B6/2935

Abstract: Disclosed is a structure (e.g., a lab-on-chip structure) including a substrate, an insulator layer on the substrate, and at least one optical ring resonator. Each ring resonator includes cladding material on the insulator layer and, embedded within the cladding material, a first waveguide core with an input and an output, and second waveguide core(s) (e.g., ring waveguide core(s)) positioned laterally adjacent to the first waveguide core. A reservoir is below the ring resonator within the insulator layer and substrate such that surfaces of the waveguide cores are exposed within the reservoir. During a sensing operation, the waveguide core surfaces contact with fluid within the reservoir and a light signal at the output of the first waveguide core is monitored (e.g., by a sensing circuit, which in some embodiments is also coupled to a reference optical ring resonator) and used, for example, for spectrum-based target identification and, optionally, characterization.