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    Heterogeneous directional couplers for photonics chips
    73.
    发明授权
    Heterogeneous directional couplers for photonics chips 有权

    公开(公告)号：US10795083B1

    公开(公告)日：2020-10-06

    申请号：US16426551

    申请日：2019-05-30

    Applicant: GLOBALFOUNDRIES Inc.

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

    IPC: G02B6/125 ,  G02B6/122 ,  G02B6/13 ,  G02B6/12

    Abstract: Structures for a directional coupler and methods of fabricating a structure for a directional coupler. A first section of a first waveguide core is laterally spaced from a second section of a second waveguide core. A coupling element is arranged either over or under the first section of the first waveguide core and the second section of the second waveguide core. The first and second waveguide cores are comprised of a material having a first refractive index, and the first coupling element is comprised of a material having a second refractive index that is different from the first refractive index. The first coupling element is surrounded by a side surface that overlaps with the first section of the first waveguide core and the second section of the second waveguide core.

    Stacked waveguide arrangements providing field confinement
    74.
    发明授权
    Stacked waveguide arrangements providing field confinement 有权

    公开(公告)号：US10746921B2

    公开(公告)日：2020-08-18

    申请号：US16040896

    申请日：2018-07-20

    Applicant: GLOBALFOUNDRIES Inc.

    Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

    IPC: G02B6/12 ,  G02B6/122 ,  G02B6/10

    Abstract: Structures including a waveguide arrangement and methods of fabricating a structure that includes a waveguide arrangement. A second waveguide spaced in a lateral direction from a first waveguide, a third waveguide spaced in a vertical direction from the first waveguide, and a fourth waveguide spaced in the vertical direction from the second waveguide. The third waveguide is arranged in the lateral direction to provide a first overlapping relationship with the first waveguide. The fourth waveguide is arranged in the lateral direction to provide a second overlapping relationship with the second waveguide.

    Waveguide crossings with a non-contacting arrangement
    75.
    发明授权
    Waveguide crossings with a non-contacting arrangement 有权

    公开(公告)号：US10718903B1

    公开(公告)日：2020-07-21

    申请号：US16441755

    申请日：2019-06-14

    Applicant: GLOBALFOUNDRIES Inc.

    Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob

    IPC: G02B6/125 ,  G02B6/136 ,  G02B6/12

    Abstract: Structures for a waveguide bend and methods of fabricating a structure for a waveguide bend. A first waveguide core has a first section, a second section, and a first waveguide bend connecting the first section with the second section. The first waveguide core has a first side surface extending about an outer radius of the first waveguide bend. A second waveguide core also has a first section, a second section, and a second waveguide bend connecting the first section with the second section. The second waveguide core has a second side surface extending about an outer radius of the second waveguide bend. The first waveguide bend is spaced from the second waveguide bend in a first non-contacting relationship with a gap between the first side surface and the second side surface. The gap has a perpendicular distance selected to permit optical signal transfer between the first and second waveguide bends.

    WAVEGUIDE INTERSECTIONS INCORPORATING A WAVEGUIDE CROSSING
    77.
    发明申请
    WAVEGUIDE INTERSECTIONS INCORPORATING A WAVEGUIDE CROSSING 审中-公开

    公开(公告)号：US20200088942A1

    公开(公告)日：2020-03-19

    申请号：US16134295

    申请日：2018-09-18

    Applicant: GLOBALFOUNDRIES Inc.

    Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob ,  Abu Thomas

    IPC: G02B6/122 ,  G02B6/125

    Abstract: Structures with waveguides in multiple levels and methods of fabricating a structure that includes waveguides in multiple levels. A waveguide crossing has a first waveguide and a second waveguide arranged to intersect the first waveguide. A third waveguide is displaced vertically from the waveguide crossing, The third waveguide includes a portion having an overlapping arrangement with a portion of the first waveguide. The overlapping portions of the first and third waveguides are configured to transfer optical signals between the first waveguide and the third waveguide.

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