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    Frequency division multiple access optical subcarriers
    11.
    发明授权
    Frequency division multiple access optical subcarriers 有权

    公开(公告)号：US11637630B2

    公开(公告)日：2023-04-25

    申请号：US16578398

    申请日：2019-09-23

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

    IPC: H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04Q11/00 ,  H04B10/2575 ,  H04J99/00

    Abstract: A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

    Frequency division multiple access optical subcarriers
    12.
    发明授权
    Frequency division multiple access optical subcarriers 有权

    公开(公告)号：US11075694B2

    公开(公告)日：2021-07-27

    申请号：US16578393

    申请日：2019-09-22

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

    IPC: H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04J99/00 ,  H04Q11/00 ,  H04B10/2575

    Abstract: A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS
    13.
    发明申请
    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 审中-公开

    公开(公告)号：US20200382216A1

    公开(公告)日：2020-12-03

    申请号：US16578398

    申请日：2019-09-23

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

    IPC: H04B10/61 ,  H04B10/077 ,  H04B10/079

    Abstract: A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

    Clock recovery for digital subcarriers for optical networks
    14.
    发明授权
    Clock recovery for digital subcarriers for optical networks 有权

    公开(公告)号：US10601520B2

    公开(公告)日：2020-03-24

    申请号：US16270590

    申请日：2019-02-07

    Applicant: Infinera Corporation

    Inventor： Han Henry Sun ,  Kuang-Tsan Wu ,  Steven Joseph Hand ,  Jeffrey T. Rahn

    IPC: H04B10/516 ,  H04B10/61 ,  H04B10/2575 ,  H04J14/02 ,  H04B10/50

    Abstract: Optical network systems and components are disclosed, including a transmitter comprising a digital signal processor that receives data; circuitry that generate a plurality of electrical signals based on the data; a plurality of filters, each of which receiving a corresponding one of the plurality of electrical signals, a plurality of roll-off factors being associated with a respective one of the plurality of filters; a plurality of DACs that receive outputs from the digital signal processor, the outputs being indicative of outputs from the plurality of filters; a laser that supplies light; and a modulator that receives the light and outputs from the DACs, and supplies a plurality of optical subcarriers based on the outputs, such that one of the optical subcarriers has a frequency bandwidth that is wider than remaining ones of the optical subcarriers, said one of the optical subcarriers carrying information for clock recovery.

    Arbitrary wavelocking of an optical transmitter using embedded data sequences
    16.
    发明授权
    Arbitrary wavelocking of an optical transmitter using embedded data sequences 有权

    公开(公告)号：US09768865B2

    公开(公告)日：2017-09-19

    申请号：US14514731

    申请日：2014-10-15

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn

    IPC: H04B10/564 ,  H04J14/02 ,  H04B10/077 ,  H04B10/572

    CPC classification number: H04B10/0775 ,  H04B10/572 ,  H04J14/0221

    Abstract: An optical system includes an optical transmitter and a controller that determines a particular wavelength for a channel of the optical transmitter. The controller causes the optical transmitter to transmit a first optical signal with a first data sequence that is determined based on the particular wavelength, and determines a first optical power that is generated based on the first optical signal and the first data sequence. The controller causes the optical transmitter to transmit a second optical signal with a second data sequence that is determined based on the particular wavelength, and determines a second optical power that is generated based on the second optical signal and the second data sequence. The controller calculates a power difference between the first optical power and the second optical power, and causes the particular wavelength for the channel to be modified based on the calculated power difference.

    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS
    19.
    发明申请
    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 有权

    公开(公告)号：US20230061657A1

    公开(公告)日：2023-03-02

    申请号：US17561858

    申请日：2021-12-24

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

    IPC: H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04Q11/00 ,  H04B10/2575 ,  H04J99/00

    Abstract: A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS
    20.
    发明申请
    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 有权

    公开(公告)号：US20220123831A1

    公开(公告)日：2022-04-21

    申请号：US17561811

    申请日：2021-12-24

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

    IPC: H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04J99/00 ,  H04Q11/00 ,  H04B10/2575

    Abstract: A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

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