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    STRUCTURES INCLUDING A GRATING COUPLER AND A LAYER EXHIBITING AN ELECTRIC-FIELD-INDUCED POCKELS EFFECT
    62.
    发明申请
    STRUCTURES INCLUDING A GRATING COUPLER AND A LAYER EXHIBITING AN ELECTRIC-FIELD-INDUCED POCKELS EFFECT 有权

    公开(公告)号：US20240419022A1

    公开(公告)日：2024-12-19

    申请号：US18209710

    申请日：2023-06-14

    Applicant: GlobalFoundries U.S. Inc.

    Inventor： Yusheng Bian

    IPC: G02F1/03 ,  G02F1/035

    Abstract: Structures including a grating coupler and a layer that exhibits an electric-field-induced Pockels effect and methods of forming such structures. The structure comprises a first grating coupler on a substrate, a second grating coupler having an overlapping relationship with the first grating coupler, and a layer including a portion having an overlapping relationship with the second grating coupler. The layer comprises a material that exhibits an electric-field-induced Pockels effect.

    WAVEGUIDE ESCALATORS FOR A PHOTONICS CHIP
    64.
    发明公开
    WAVEGUIDE ESCALATORS FOR A PHOTONICS CHIP 审中-公开

    公开(公告)号：US20240288631A1

    公开(公告)日：2024-08-29

    申请号：US18115046

    申请日：2023-02-28

    Applicant: GlobalFoundries U.S. Inc.

    Inventor： Yusheng Bian ,  Kevin Dezfulian ,  Kenneth Giewont ,  Karen Nummy

    IPC: G02B6/12

    CPC classification number: G02B6/12004 ,  G02B2006/12061 ,  G02B6/136

    Abstract: Structures for a waveguide escalator and methods of forming such structures. A structure comprises a first waveguide core, and a back-end-of-line stack including a first dielectric layer, a second dielectric layer on the first dielectric layer, an opening in the second dielectric layer, a second waveguide core including a section that overlaps with a section of the first waveguide core, and a plurality of third waveguide cores disposed between the section of the first waveguide core and the section of the second waveguide core. The plurality of third waveguide cores are positioned inside the opening in the second dielectric layer, the first dielectric layer comprises a first material with a first refractive index, and the second dielectric layer comprises a second material with a second refractive index different from the first refractive index.

    DIRECTIONAL COUPLERS WITH HETEROGENOUS CLADDINGS
    65.
    发明公开
    DIRECTIONAL COUPLERS WITH HETEROGENOUS CLADDINGS 审中-公开

    公开(公告)号：US20240241314A1

    公开(公告)日：2024-07-18

    申请号：US18096607

    申请日：2023-01-13

    Applicant: GlobalFoundries U.S. Inc.

    Inventor： Yusheng Bian

    IPC: G02B6/125 ,  G02B6/124

    CPC classification number: G02B6/125 ,  G02B6/124 ,  G02B2006/12147

    Abstract: Structures for a directional coupler and methods of forming a structure for a directional coupler. The structure comprises a first waveguide core including a first plurality of segments, and a second waveguide core including a second plurality of segments disposed adjacent to the first plurality of segments in a coupling region. The structure further comprises a first cladding layer comprising a first material that has a first refractive index, and a second cladding layer comprising a second material that has a second refractive index different from the first refractive index. The first cladding layer adjoins a first sidewall of each of the first plurality of segments and a first sidewall of each of the second plurality of segments, and the second cladding layer adjoins a second sidewall of each of the first plurality of segments and a second sidewall of each of the second plurality of segments.

    Optical waveguide with stacked cladding material layers
    68.
    发明授权
    Optical waveguide with stacked cladding material layers 有权

    公开(公告)号：US11971572B2

    公开(公告)日：2024-04-30

    申请号：US17674905

    申请日：2022-02-18

    Applicant: GlobalFoundries U.S. Inc.

    Inventor： Shesh Mani Pandey ,  Yusheng Bian ,  Francis O. Afzal

    IPC: G02B6/036 ,  G02B6/028

    CPC classification number: G02B6/0288 ,  G02B6/036

    Abstract: Disclosed is an optical waveguide including a waveguide core and waveguide cladding surrounding the waveguide core. The waveguide cladding includes at least one stack of cladding material layers positioned laterally adjacent to a sidewall of the waveguide core such that each cladding material layer in the stack abuts the sidewall of the waveguide core. Each of the cladding material layers in the stack has a smaller refractive index than the waveguide core and at least two of the cladding material layers in the stack have different refractive indices, thereby tailoring field confinement and reshaping the optical mode. Different embodiments include different numbers of cladding material layers in the stack, different stacking orders of the cladding material layers, different waveguide core types, symmetric or asymmetric cladding structures on opposite sides of the waveguide core, etc. Also disclosed is a method of forming the optical waveguide.

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