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    OPTICAL MODULES HAVING AN IMPROVED OPTICAL SIGNAL TO NOISE RATIO
    31.
    发明申请
    OPTICAL MODULES HAVING AN IMPROVED OPTICAL SIGNAL TO NOISE RATIO 审中-公开

    公开(公告)号：US20190103938A1

    公开(公告)日：2019-04-04

    申请号：US16190322

    申请日：2018-11-14

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Vikrant Lal ,  Peter W. Evans ,  Fred A. Kish, JR.

    IPC: H04J14/02 ,  H04B10/50 ,  H04B10/079

    Abstract: Consistent with the present disclosure, a photonic integrated circuit (PIC) is provided that has 2 N channels (N being an integer). The PIC is optically coupled to N optical fibers, such that each of N polarization multiplexed optical signals are transmitted over a respective one of the N optical fibers. In another example, each of the N optical fibers supply a respective one of N polarization multiplexed optical signals to the PIC for coherent detection and processing. A multiplexer and demultiplexer may be omitted from the PIC, such that the optical signals are not combined on the PIC. As a result, the transmitted and received optical signals incur less loss and amplified spontaneous emission (ASE) noise. In addition, optical taps may be more readily employed on the PIC to measure outputs of the lasers, such as widely tunable lasers (WTLs), without crossing waveguides.

    OPTICAL MODULES HAVING AN IMPROVED OPTICAL SIGNAL TO NOISE RATIO
    32.
    发明申请
    OPTICAL MODULES HAVING AN IMPROVED OPTICAL SIGNAL TO NOISE RATIO 审中-公开

    公开(公告)号：US20190081725A1

    公开(公告)日：2019-03-14

    申请号：US16190341

    申请日：2018-11-14

    Applicant: Infinera Corporation

    Inventor： Jeffrey T. Rahn ,  Vikrant Lal ,  Peter W. Evans ,  Fred A. Kish, JR.

    IPC: H04J14/02 ,  H04B10/50 ,  H04B10/079

    Abstract: Consistent with the present disclosure, a photonic integrated circuit (PIC) is provided that has 2 N channels (N being an integer). The PIC is optically coupled to N optical fibers, such that each of N polarization multiplexed optical signals are transmitted over a respective one of the N optical fibers. In another example, each of the N optical fibers supply a respective one of N polarization multiplexed optical signals to the PIC for coherent detection and processing. A multiplexer and demultiplexer may be omitted from the PIC, such that the optical signals are not combined on the PIC. As a result, the transmitted and received optical signals incur less loss and amplified spontaneous emission (ASE) noise. In addition, optical taps may be more readily employed on the PIC to measure outputs of the lasers, such as widely tunable lasers (WTLs), without crossing waveguides.

    Nonlinear compensation in WDM systems
    34.
    发明授权
    Nonlinear compensation in WDM systems 有权
    WDM系统中的非线性补偿

    公开(公告)号：US08849114B2

    公开(公告)日：2014-09-30

    申请号：US13724436

    申请日：2012-12-21

    Applicant: Infinera Corporation

    Inventor： Pierre Herve Mertz ,  Hai Xu ,  Jeffrey T. Rahn

    IPC: H04B10/00 ,  H04J14/00 ,  H04J14/02

    CPC classification number: H04J14/02 ,  H04B10/2543 ,  H04B10/29 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0279 ,  H04J14/06

    Abstract: A compensator device may include a selection switch to receive a first optical signal and provide first and second groups of channels associated with the first optical signal; a polarization beam splitter to receive the first channels, and provide first and second components; a photodiode that provides an electrical signal indicative of an intensity of the first group of channels; a first modulator to receive the electrical signal and the first components and to modulate the first components to form first modulated channels; a second modulator to receive the electrical signal and the second components to modulate the second components to form second modulated channels; a polarization beam combiner to receive the first and second modulated channels to form combined modulated channels; and a coupler to receive the combined modulated channels and the second group of channels to form a second optical signal.

    Abstract translation: 补偿装置可以包括选择开关，用于接收第一光信号并提供与第一光信号相关联的第一和第二组信道; 偏振分束器，用于接收第一通道，并提供第一和第二组件; 光电二极管，其提供指示第一组通道的强度的电信号; 第一调制器，用于接收电信号和第一分量并且调制第一分量以形成第一调制信道; 第二调制器，用于接收电信号和第二分量以调制第二分量以形成第二调制信道; 偏振光束组合器，用于接收第一和第二调制信道以形成组合调制信道; 以及耦合器，用于接收组合的调制信道和第二组信道以形成第二光信号。

    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS
    37.
    发明申请
    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 有权

    公开(公告)号：US20230092560A1

    公开(公告)日：2023-03-23

    申请号：US17561855

    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
    39.
    发明授权
    Frequency division multiple access optical subcarriers 有权

    公开(公告)号：US11095364B2

    公开(公告)日：2021-08-17

    申请号：US16578390

    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
    40.
    发明申请
    FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 有权

    公开(公告)号：US20210091856A1

    公开(公告)日：2021-03-25

    申请号：US16578397

    申请日：2019-09-22

    Applicant: Infinera Corporation

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

    IPC: H04B10/50 ,  H04B10/54 ,  H04B10/60

    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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