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公开(公告)号：US20210302651A1
公开(公告)日：2021-09-30
申请号：US16836047
申请日：2020-03-31
Inventor： Yusheng Bian , Sujith Chandran , Jaime Viegas , Humarira Zafar , Ajey Poovannummoottil Jacob
Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A waveguide crossing includes a first arm and a second arm. A waveguide loop couples the first arm of the waveguide crossing to the second arm of the waveguide crossing. The waveguide crossing and the waveguide loop provide a structure for the polarizer.
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公开(公告)号：US20240393625A1
公开(公告)日：2024-11-28
申请号：US18201583
申请日：2023-05-24
Applicant: GlobalFoundries U.S. Inc.
Inventor： Sujith Chandran , Yusheng Bian , Won Suk Lee
IPC: G02F1/01
Abstract: Structures for a thermo-optic phase shifter and methods of forming a thermo-optic phase shifter. The structure comprises a semiconductor substrate, and a heater including a first resistive heating element, a second resistive heating element, and a slab layer connecting the first resistive heating element to the second resistive heating element. The first resistive heating element and the second resistive heating element have a first thickness, and the slab layer has a second thickness that is less than the first thickness. The structure further comprises a waveguide core including a portion that is laterally positioned between the first resistive heating element and the second resistive heating element. The slab layer of the heater is disposed between the portion of the waveguide core and the semiconductor substrate.
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公开(公告)号：US11061186B2
公开(公告)日：2021-07-13
申请号：US16199468
申请日：2018-11-26
Inventor： Ajey Poovannummoottil Jacob , Marcus V. S. Dahlem , Humaira Zafar , Anatol Khilo , Sujith Chandran
Abstract: The present disclosure relates to semiconductor structures and, more particularly, to rib waveguide structures and methods of manufacture. The structure includes: a waveguide structure comprising one or more bends, an input end and an output end; and grating structures which are positioned adjacent to the one or more bends of the waveguide structure.
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公开(公告)号：US20210124117A1
公开(公告)日：2021-04-29
申请号：US16663696
申请日：2019-10-25
Inventor： Ajey Poovannummoottil Jacob , Yusheng Bian , Sujith Chandran , Marcus Dahlem
Abstract: Structures for a waveguide crossing and methods of fabricating a structure for a waveguide crossing. A waveguide crossing includes a central section and an arm positioned between a waveguide core and the central section. The arm and the waveguide core are aligned along a longitudinal axis. The arm is coupled to the waveguide core at a first interface, and the arm is coupled to a portion of the central section at a second interface. The arm has a first width at the first interface, a second width at the second interface, and a third width between the first interface and the second interface. The third width is greater than either the first width or the second width.
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公开(公告)号：US20240419047A1
公开(公告)日：2024-12-19
申请号：US18210151
申请日：2023-06-15
Applicant: GlobalFoundries U.S. Inc.
Inventor： Michal Rakowski , Sujith Chandran , Takako Hirokawa , Pilar Gonzalez
Abstract: Structures for a broadband optical switch and methods of forming such structures. The structure comprises a Mach-Zehnder interferometer including first and second arms. The first arm comprises a first waveguide core, and the second arm comprises a second waveguide core. The structure further comprises a ring resonator comprising a third waveguide core that has a first thickness. A portion of the third waveguide core is adjacent to a portion of the first waveguide core over a light coupling region. A slab layer connects the portion of the first waveguide core to the portion of the third waveguide core. The slab layer has a second thickness that is less than the first thickness of the first waveguide core.
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Patent Agency Ranking
公开(公告)号：US20210294035A1
公开(公告)日：2021-09-23
申请号：US16821299
申请日：2020-03-17
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.
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公开(公告)号：US11550100B2
公开(公告)日：2023-01-10
申请号：US17202729
申请日：2021-03-16
Inventor： Yusheng Bian , Michal Rakowski , Roderick A. Augur , Marios Papadovasilakis , Sujith Chandran , Jaime Viegas , Yonas Gebregiorgis
Abstract: Structures for a wavelength-division multiplexing filter and methods of forming a structure for a wavelength-division multiplexing filter. A waveguide core of the wavelength-division multiplexing filter includes a first bend having a first curvature and a second bend having a second curvature different than the first curvature. The structure further includes a waveguide core region having a first end surface, a second end surface, and a bend arranged between the first and second end surfaces. The bend is positioned over the first bend of the waveguide core in an overlapping relationship.
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公开(公告)号：US11320590B2
公开(公告)日：2022-05-03
申请号：US16836047
申请日：2020-03-31
Inventor： Yusheng Bian , Sujith Chandran , Jaime Viegas , Humarira Zafar , Ajey Poovannummoottil Jacob
Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A waveguide crossing includes a first arm and a second arm. A waveguide loop couples the first arm of the waveguide crossing to the second arm of the waveguide crossing. The waveguide crossing and the waveguide loop provide a structure for the polarizer.
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公开(公告)号：US11150407B2
公开(公告)日：2021-10-19
申请号：US16821299
申请日：2020-03-17
Inventor： Yusheng Bian , Ajey Poovannummoottil Jacob , Sujith Chandran
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.
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公开(公告)号：US10989873B1
公开(公告)日：2021-04-27
申请号：US16663696
申请日：2019-10-25
Inventor： Ajey Poovannummoottil Jacob , Yusheng Bian , Sujith Chandran , Marcus Dahlem
Abstract: Structures for a waveguide crossing and methods of fabricating a structure for a waveguide crossing. A waveguide crossing includes a central section and an arm positioned between a waveguide core and the central section. The arm and the waveguide core are aligned along a longitudinal axis. The arm is coupled to the waveguide core at a first interface, and the arm is coupled to a portion of the central section at a second interface. The arm has a first width at the first interface, a second width at the second interface, and a third width between the first interface and the second interface. The third width is greater than either the first width or the second width.
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