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    FIBER LENGTH MEASUREMENT SYSTEM
    1.
    发明申请
    FIBER LENGTH MEASUREMENT SYSTEM 有权
    光纤长度测量系统

    公开(公告)号：US20140376905A1

    公开(公告)日：2014-12-25

    申请号：US13926736

    申请日：2013-06-25

    Applicant: Cisco Technology, Inc.

    Inventor： Chris Fludger

    IPC: H04B10/079 ,  H04B3/46

    CPC classification number: H04B3/46 ,  G01M11/31 ,  H04B10/073

    Abstract: A system for measuring a length of one or more spans between a first optical transceiver and a second optical transceiver in a fiber-optic network, which can determine, at a processor associated with the first optical transceiver, a round-trip time of an optical signal communicated from the first optical transceiver to the second optical transceiver and back to the first optical transceiver. The system can also determine, at the processor, a half-round-trip time by dividing the round-trip time by two. The system can also determine, at the processor, a distance between the first and the second optical transceivers by multiplying the speed of light by the half-round-trip time.

    Abstract translation: 一种用于测量光纤网络中的第一光收发器和第二光收发器之间的一个或多个跨度的长度的系统，其可以在与第一光收发器相关联的处理器处确定光学器件的往返时间 信号从第一光收发器传送到第二光收发器并返回到第一光收发器。 该系统还可以通过将往返时间除以2来确定在处理器处的半往往时间。 该系统还可以在处理器处通过将光速乘以半往返时间来确定第一和第二光收发器之间的距离。

    Optimization of Optical Transmission Capacity
    3.
    发明申请
    Optimization of Optical Transmission Capacity 有权
    光传输容量优化

    公开(公告)号：US20160142179A1

    公开(公告)日：2016-05-19

    申请号：US14198867

    申请日：2014-03-06

    Applicant: Cisco Technology, Inc.

    Inventor： Chris Fludger ,  Theodor Kupfer ,  Fabrizio Forghieri ,  Pierluigi Poggiolini ,  Gabriella Bosco ,  Andrea Carena ,  Vittorio Curri

    IPC: H04L1/00 ,  H04B10/2569 ,  H04J14/06 ,  H04B10/516

    CPC classification number: H04L1/0042 ,  H04B10/25137 ,  H04B10/2569 ,  H04B10/5161 ,  H04B10/541 ,  H04B10/61 ,  H04B10/614 ,  H04B10/616 ,  H04J14/06

    Abstract: A method for transmitting a coherent optical data signal includes receiving a data signal from an interface, and encoding the data signal with a forward error correcting (FEC) encoder according to a mix of modulation formats. The FEC encoder generates an FEC encoded signal which is used to generate modulation symbols according to the modulation formats. The FEC encoded signal of modulation symbols is spectrally shaped to generate a shaped signal, and pre-distorted before transmission. The shaped signal is pre-distorted by adding a predetermined amount of chromatic dispersion to generate a smoothed signal, and the smoothed signal is transmitted according to the modulation formats.

    Abstract translation: 用于发送相干光数据信号的方法包括从接口接收数据信号，并且根据调制格式的混合使用前向纠错（FEC）编码器对数据信号进行编码。 FEC编码器生成用于根据调制格式生成调制符号的FEC编码信号。 调制符号的FEC编码信号被频谱整形以产生成形信号，并且在传输之前被预失真。 通过添加预定量的色散以产生平滑的信号来对成形信号进行预失真，并根据调制格式发送平滑的信号。

    Sub-sampled carrier phase recovery
    4.
    发明授权
    Sub-sampled carrier phase recovery 有权
    次采样载波相位恢复

    公开(公告)号：US09270384B2

    公开(公告)日：2016-02-23

    申请号：US14154674

    申请日：2014-01-14

    Applicant: Cisco Technology, Inc.

    Inventor： Andreas Bisplinghoff ,  Chris Fludger

    IPC: H04B10/06 ,  H04B10/61 ,  H04L7/00 ,  H04L7/04

    CPC classification number: H04B10/6165 ,  H04L7/0075 ,  H04L7/048 ,  H04L2027/0067

    Abstract: Presented herein are sub-sampled carrier phase recovery techniques. In accordance with one example, a plurality of consecutive symbols associated with a received optical signal is obtained. Carrier phase recovery of the optical signal is performed using one or more carrier phase estimation stages. At each of the one or more carrier phase estimation stages, a subset of the plurality of consecutive symbols is selected for use in carrier phase estimation. The subset of symbols selected for use in carrier phase estimation at each of the one or more stages comprises symbols that provide the most phase recovery information for each of the one or more stages.

    Abstract translation: 这里呈现的是子采样载波相位恢复技术。 根据一个示例，获得与所接收的光信号相关联的多个连续符号。 使用一个或多个载波相位估计级来执行光信号的载波相位恢复。 在一个或多个载波相位估计级中的每一个中，选择多个连续符号的子集用于载波相位估计。 被选择用于在一个或多个阶段中的每个阶段的载波相位估计中的符号子集包括为一个或多个阶段中的每一个提供最大相位恢复信息的符号。

    Fiber length measurement system
    5.
    发明授权
    Fiber length measurement system 有权
    光纤长度测量系统

    公开(公告)号：US09379771B2

    公开(公告)日：2016-06-28

    申请号：US13926736

    申请日：2013-06-25

    Applicant: Cisco Technology, Inc.

    Inventor： Chris Fludger

    IPC: H04B3/00 ,  H04B3/46 ,  H04B10/073 ,  G01M11/00

    CPC classification number: H04B3/46 ,  G01M11/31 ,  H04B10/073

    Abstract: A system for measuring a length of one or more spans between a first optical transceiver and a second optical transceiver in a fiber-optic network, which can determine, at a processor associated with the first optical transceiver, a round-trip time of an optical signal communicated from the first optical transceiver to the second optical transceiver and back to the first optical transceiver. The system can also determine, at the processor, a half-round-trip time by dividing the round-trip time by two. The system can also determine, at the processor, a distance between the first and the second optical transceivers by multiplying the speed of light by the half-round-trip time.

    Abstract translation: 一种用于测量光纤网络中的第一光收发器和第二光收发器之间的一个或多个跨度的长度的系统，其可以在与所述第一光收发器相关联的处理器处确定光学器件的往返时间 信号从第一光收发器传送到第二光收发器并返回到第一光收发器。 该系统还可以通过将往返时间除以2来确定在处理器处的半往往时间。 该系统还可以在处理器处通过将光速乘以半往返时间来确定第一和第二光收发器之间的距离。

    Sub-Sampled Carrier Phase Recovery
    6.
    发明申请
    Sub-Sampled Carrier Phase Recovery 有权
    子采样载波相位恢复

    公开(公告)号：US20150200731A1

    公开(公告)日：2015-07-16

    申请号：US14154674

    申请日：2014-01-14

    Applicant: Cisco Technology, Inc.

    Inventor： Andreas Bisplinghoff ,  Chris Fludger

    IPC: H04B10/61 ,  H04L7/04 ,  H04L7/00

    CPC classification number: H04B10/6165 ,  H04L7/0075 ,  H04L7/048 ,  H04L2027/0067

    Abstract: Presented herein are sub-sampled carrier phase recovery techniques. In accordance with one example, a plurality of consecutive symbols associated with a received optical signal is obtained. Carrier phase recovery of the optical signal is performed using one or more carrier phase estimation stages. At each of the one or more carrier phase estimation stages, a subset of the plurality of consecutive symbols is selected for use in carrier phase estimation. The subset of symbols selected for use in carrier phase estimation at each of the one or more stages comprises symbols that provide the most phase recovery information for each of the one or more stages.

    Abstract translation: 这里呈现的是子采样载波相位恢复技术。 根据一个示例，获得与所接收的光信号相关联的多个连续符号。 使用一个或多个载波相位估计级执行光信号的载波相位恢复。 在一个或多个载波相位估计级中的每一个中，选择多个连续符号的子集用于载波相位估计。 被选择用于在一个或多个阶段中的每个阶段的载波相位估计中的符号子集包括为一个或多个阶段中的每一个提供最大相位恢复信息的符号。

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