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    Feeder Fiber and Central Office Redundancy
    1.
    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
    3.
    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
    4.
    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.

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