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    Grating couplers with cladding layer(s)
    3.
    发明授权
    Grating couplers with cladding layer(s) 有权

    公开(公告)号：US10746907B2

    公开(公告)日：2020-08-18

    申请号：US15945347

    申请日：2018-04-04

    Applicant: GLOBALFOUNDRIES INC.

    Inventor： Ajey Poovannummoottil Jacob ,  Yusheng Bian

    IPC: G02B5/18 ,  G02B6/30 ,  G02B6/34

    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to grating couplers with structured cladding and methods of manufacture. A structure includes: a grating coupler in a dielectric material; a back end of line (BEOL) multilayer stack over the dielectric material; and a multi-layered cladding structure of alternating materials directly on the BEOL multilayer stack.

    Electro-optic modulators with layered arrangements
    4.
    发明授权
    Electro-optic modulators with layered arrangements 有权

    公开(公告)号：US10684530B1

    公开(公告)日：2020-06-16

    申请号：US16288634

    申请日：2019-02-28

    Applicant: GLOBALFOUNDRIES Inc.

    Inventor： Yusheng Bian ,  Ajey Poovannummoottil Jacob ,  Abu Thomas

    IPC: G02F1/29

    Abstract: Structures for an electro-optic modulator and methods of fabricating a structure for an electro-optic modulator. An electro-optic modulator is arranged over a portion of a waveguide core. The electro-optic modulator includes an electrode, an active layer arranged adjacent to the electrode, and a dielectric layer including a portion that has a lateral arrangement between the electrode and the active layer. The active layer is composed of a material having a refractive index that is a function of a bias voltage applied to the electrode and the active layer.

    SILICON NITRIDE GRATING COUPLERS
    6.
    发明申请
    SILICON NITRIDE GRATING COUPLERS 审中-公开

    公开(公告)号：US20190227229A1

    公开(公告)日：2019-07-25

    申请号：US15878025

    申请日：2018-01-23

    Applicant: GLOBALFOUNDRIES Inc.

    Inventor： Ajey P. Jacob ,  Yusheng Bian

    IPC: G02B6/124 ,  G02B6/136 ,  G02B6/132

    Abstract: Grating couplers and methods of fabricating a grating coupler. The grating coupler may include a plurality of grating structures arranged on a substrate and a layer arranged over the grating structures. The grating structures are composed of a first material characterized by a first refractive index with a real part. The layer is composed of a second material characterized by a second refractive index with a real part. The real part of the second refractive index is greater than the real part of the first refractive index of the first material for electromagnetic radiation with a wavelength in a range of 1 micron to 9 microns.

    Heterogeneous directional couplers for photonics chips
    9.
    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
    10.
    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.

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