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    Device and method for coupling laser to a photonic integrated circuit
    2.
    发明授权
    Device and method for coupling laser to a photonic integrated circuit 有权

    公开(公告)号：US10788632B2

    公开(公告)日：2020-09-29

    申请号：US16261211

    申请日：2019-01-29

    Applicant: Google LLC

    Inventor： Daoyi Wang ,  Lieven Verslegers ,  Ryohei Urata

    IPC: G02B6/42

    Abstract: A photonic integrated circuit for coupling a laser from an optical assembly to a grating coupler is disclosed. A method for coupling a laser to a photonic integrated circuit is disclosed. The optical assembly includes an optical system disposed on a v-groove bench. The optical system typically includes a laser source, a coupling lens or lens system, an optional isolator, a beam redirector that includes a prism or other light turning element and a cylindrical tube mounted on the v-groove bench. The method of tuning the angle of incidence from the optical assembly to the grating coupler is also disclosed.

    Feeder Fiber and Central Office Redundancy
    3.
    发明申请
    Feeder Fiber and Central Office Redundancy 审中-公开

    公开(公告)号：US20190393958A1

    公开(公告)日：2019-12-26

    申请号：US16554477

    申请日：2019-08-28

    Applicant: Google LLC

    Inventor： Liang Du ,  Yut Loy Chan ,  Xiangjun Zhao ,  Changhong Joy Jiang ,  Cedric Fung Lam ,  Daoyi Wang ,  Tao Zhang

    IPC: H04B10/25 ,  H04J14/02

    Abstract: A remote node includes a first node input, a second node input, and an optical switch. The optical switch includes a first switch input optically coupled to the first node input, a second switch input optically coupled to the second node input, a first switch output switchably coupled to the first switch input or the second switch input, and a second switch output switchably coupled to the first switch input or the second switch input. The remote node includes a photodiode optically coupled to the second switch output, and a capacitor electrically coupled to the photodiode and the optical switch. When the first switch input is switchably coupled to the first switch output, the second switch input is switchably coupled to the second switch output. Light received by the second switch input passes out the second switch output to the photodiode. The photodiode charges the capacitor to a threshold charge.

    Feeder fiber and central office redundancy
    7.
    发明授权
    Feeder fiber and central office redundancy 有权

    公开(公告)号：US10516479B1

    公开(公告)日：2019-12-24

    申请号：US16554477

    申请日：2019-08-28

    Applicant: Google LLC

    Inventor： Liang Du ,  Yut Loy Chan ,  Xiangjun Zhao ,  Changhong Joy Jiang ,  Cedric Fung Lam ,  Daoyi Wang ,  Tao Zhang

    IPC: H04B10/25 ,  H04J14/02

    Abstract: A remote node includes a first node input, a second node input, and an optical switch. The optical switch includes a first switch input optically coupled to the first node input, a second switch input optically coupled to the second node input, a first switch output switchably coupled to the first switch input or the second switch input, and a second switch output switchably coupled to the first switch input or the second switch input. The remote node includes a photodiode optically coupled to the second switch output, and a capacitor electrically coupled to the photodiode and the optical switch. When the first switch input is switchably coupled to the first switch output, the second switch input is switchably coupled to the second switch output. Light received by the second switch input passes out the second switch output to the photodiode. The photodiode charges the capacitor to a threshold charge.

    Feeder fiber and central office redundancy
    8.
    发明授权
    Feeder fiber and central office redundancy 有权

    公开(公告)号：US10439722B2

    公开(公告)日：2019-10-08

    申请号：US16038122

    申请日：2018-07-17

    Applicant: Google LLC

    Inventor： Liang Du ,  Yut Loy Chan ,  Xiangjun Zhao ,  Changhong Joy Jiang ,  Cedric Fung Lam ,  Daoyi Wang ,  Tao Zhang

    IPC: H04B10/25 ,  H04J14/02

    Abstract: A carrier office includes an optical line terminal, a first transmit-erbium-doped fiber amplifier (EDFA), and a second transmit-EDFA. The OLT is configured to transmit first and second optical signals. The first transmit-EDFA is optically coupled to the OLT and a first feeder fiber, and the first feeder fiber is optically coupled to a first remote node (RN). The first transmit-EDFA is operable between a respective enabled state and a respective disabled state. The second transmit-EDFA is optically coupled to the OLT and a second feeder fiber, and the second feeder fiber is optically coupled to a second RN. The second transmit-EDFA is operable between a respective enabled state and a respective disabled state.

    Fixture And Method For Attaching Fibers To V-Grooves Of Photonic Integrated Circuit
    9.
    发明申请
    Fixture And Method For Attaching Fibers To V-Grooves Of Photonic Integrated Circuit 有权

    公开(公告)号：US20220413234A1

    公开(公告)日：2022-12-29

    申请号：US17358314

    申请日：2021-06-25

    Applicant: Google LLC

    Inventor： Daoyi Wang ,  Ryohei Urata ,  Lieven Verslegers ,  Jan Petykiewicz

    IPC: G02B6/42 ,  G02B6/30 ,  G02B6/12

    Abstract: A system for passive alignment of fibers to an interface of a photonic integrated circuit (PIC) includes an input frame, an actuator, and an output frame. The actuator arranged to apply force along a force axis to the input frame. The output frame including a tip for picking up a plate and transferring the force thereto, the output frame being connected to the input frame such that the output frame may tilt relative to the input frame and the output frame is elastically biased relative to the input frame into a position wherein the tip is aligned on the force axis.

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