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    Low cost secure ROADM branching unit with redundancy protection
    191.
    发明授权
    Low cost secure ROADM branching unit with redundancy protection 有权

    公开(公告)号：US09654209B2

    公开(公告)日：2017-05-16

    申请号：US15090642

    申请日：2016-04-05

    Applicant: NEC Laboratories America, Inc.

    Inventor： Philip Nan Ji ,  Ting Wang ,  Ryuji Aida

    IPC: H04B10/00 ,  H04B10/032 ,  H04J14/02 ,  H04B10/25 ,  H04Q11/00

    CPC classification number: H04B10/032 ,  H04B10/2503 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0216 ,  H04J14/0297 ,  H04Q11/0005 ,  H04Q2011/0043

    Abstract: A communication system includes a primary module with: first trunk and branch input and output ports, each coupled to first in/out couplers, the first in/out couplers coupled to first circulators, and the circulators in turn coupled to first central couplers; second trunk branch input and output ports, each coupled to second in/out couplers, each of second in/out couplers coupled to second circulators; and first and second bidirectional wavelength-selective switches (WSSes) coupled to the first central couplers. The system also includes a secondary module with first trunk and branch input and output ports, each coupled to first in/out couplers, the first in/out couplers coupled to third circulators, and the circulators in turn coupled to second central couplers; second trunk branch input and output ports, each coupled to second in/out couplers, each of second in/out couplers coupled to fourth circulators, and third and fourth bidirectional wavelength-selective switches (WSSes) coupled to the second central couplers. The system further includes one or more 2×2 switches coupling the primary module WSS outputs with the secondary module WSS outputs.

    Adding link aggregation group to hitless protection in packet switched networks
    193.
    发明授权
    Adding link aggregation group to hitless protection in packet switched networks 有权
    将分组交换网络中的链路聚合组添加到无中断保护

    公开(公告)号：US09537757B2

    公开(公告)日：2017-01-03

    申请号：US14454957

    申请日：2014-08-08

    Applicant: NEC Laboratories America, Inc.

    Inventor： Junqiang Hu ,  Yoshinobu Ooto ,  Kazuo Takagi ,  Yoshiaki Aono ,  Ting Wang

    IPC: H04L12/707 ,  H04L12/735 ,  H04L12/709 ,  H04L12/703 ,  H04L12/801

    CPC classification number: H04L45/22 ,  H04L45/1283 ,  H04L45/245 ,  H04L45/28 ,  H04L47/34 ,  Y02D50/30

    Abstract: A method is provided for traffic aggregation in a hitless protected packet switched network having source and destination nodes. The method includes enabling a working path and a protecting path between the source and destination nodes. The working path is non-overlapping with respect to the protecting path. The method includes generating, using a processor, internal marker packets at working and protecting input ports of the source nodes. Each market packet represents a respective marker time period. The method includes transmitting the marker packets to working and protecting output ports of the source nodes, by the working and protecting input ports of the source nodes. The method includes selectively aggregating, at each of the working and protecting output ports of the source nodes, hitless traffic sent from different working and protecting inputs ports of the source nodes to provide an aggregated flow there from, responsive to the marker packets.

    Abstract translation: 提供了一种用于具有源和目的地节点的无中继保护分组交换网络中的业务聚合的方法。 该方法包括启用源节点和目的节点之间的工作路径和保护路径。 工作路径与保护路径不重叠。 该方法包括在工作和保护源节点的输入端口时生成使用处理器的内部标记分组。 每个市场包代表相应的标记时间段。 该方法包括通过工作和保护源节点的输入端口，将标记数据包发送到工作和保护源节点的输出端口。 该方法包括在源节点的每个工作和保护输出端口选择性地聚合来自源节点的不同工作和保护输入端口的无中断业务，从而响应于标记分组来提供聚合流。

    Remote Wind Turbulence Sensing
    195.
    发明申请
    Remote Wind Turbulence Sensing 审中-公开
    远程风力湍流感应

    公开(公告)号：US20160202283A1

    公开(公告)日：2016-07-14

    申请号：US14978934

    申请日：2015-12-22

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ting Wang ,  Yi Weng

    IPC: G01P5/26 ,  G01W1/10 ,  B64D45/00

    CPC classification number: G01P5/26 ,  B64D45/00 ,  B64D2045/007 ,  G01S7/4802 ,  G01S7/4814 ,  G01S17/58 ,  G01S17/95 ,  G01W1/10 ,  G01W2001/003 ,  Y02A90/19

    Abstract: Systems and methods for detection of atmospheric conditions using optical orbital angular momentum (OAM)-based spectroscopy include applying OAM states to a light beam to generate an OAM spectrum, transmitting OAM light beams into an atmosphere, and determining degradation of the generated OAM light beams passing through atmospheric turbulence. A rotation rate of aerosols in the atmosphere is determined by analyzing different frequency shifts in OAM states of OAM light beams. A reflected OAM spectrum including a plurality of OAM light beams associated with the aerosols in the atmosphere may be received, and Doppler frequency shifts caused by reflection off the aerosols in the atmosphere may be measured. Laguerre-Gaussian (LG) modes of the received light beams may be detected and sorted based on the OAM states of the LG modes, and wind turbulence values are predicted by analyzing a difference in the Doppler frequency shifts for the received OAM light beams.

    Abstract translation: 使用基于光轨道角动量（OAM）的光谱检测大气条件的系统和方法包括将OAM状态应用于光束以产生OAM光谱，将OAM光束传输到大气中，以及确定所生成的OAM光束的劣化 经过大气湍流。 通过分析OAM光束的OAM状态中的不同频移来确定大气中气溶胶的旋转速率。 可以接收包括与大气中的气溶胶相关联的多个OAM光束的反射OAM光谱，并且可以测量由大气中的气溶胶反射引起的多普勒频移。 可以基于LG模式的OAM状态来检测和分类接收光束的拉格尔 - 高斯（LG）模式，并且通过分析所接收的OAM光束的多普勒频移的差来预测风湍流值。

    DISTRIBUTED MULTI-CHANNEL COHERENT OPTICAL FIBER SENSING SYSTEM
    196.
    发明申请
    DISTRIBUTED MULTI-CHANNEL COHERENT OPTICAL FIBER SENSING SYSTEM 审中-公开
    分布式多通道相干光纤传感系统

    公开(公告)号：US20160202142A1

    公开(公告)日：2016-07-14

    申请号：US14975062

    申请日：2015-12-18

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ting Wang ,  Yi Weng

    IPC: G01M11/00 ,  G02B6/14

    CPC classification number: G01M11/3181 ,  G01M11/3109 ,  G01M11/3172 ,  G02B6/14

    Abstract: A method and system are provided. The method includes converting, using a spatial mode converter, an input signal into a plurality of spatial modes and performing polarization multiplexing and mode multiplexing, using a polarization multiplexer and a mode multiplexer, respectively, on the input signal. The method further includes injecting the input signal into a fiber optic medium. The method additionally includes applying, using at least one spatial filter in each of a forward and a backward direction within the fiber optic medium, the plurality of spatial modes within the fiber optic medium to transmit the input signal and perform distributed fault sensing on the input signal simultaneously

    Abstract translation: 提供了一种方法和系统。 该方法包括使用空间模式转换器将输入信号转换为多个空间模式，并且对输入信号分别使用偏振复用器和模式多路复用器来执行偏振复用和模式复用。 该方法还包括将输入信号注入到光纤介质中。 该方法还包括在光纤介质内使用至少一个在前向和后向方向中的每一个中的空间滤波器来应用光纤介质内的多个空间模式来传输输入信号并对输入进行分布式故障检测 信号同时

    Rate adaptive irregular QC-LDPC codes from pairwise balanced designs for ultra-high-speed optical transports
    199.
    发明授权
    Rate adaptive irregular QC-LDPC codes from pairwise balanced designs for ultra-high-speed optical transports 有权
    为超高速光传输的成对平衡设计率自适应不规则QC-LDPC码

    公开(公告)号：US09367387B2

    公开(公告)日：2016-06-14

    申请号：US14162951

    申请日：2014-01-24

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. Djordjevic ,  Ting Wang

    IPC: H03M13/00 ,  G06F11/10 ,  H03M13/25 ,  H03M13/11 ,  H03M13/03

    CPC classification number: G06F11/10 ,  H03M13/033 ,  H03M13/112 ,  H03M13/116 ,  H03M13/1171 ,  H03M13/1177 ,  H03M13/255 ,  H04L1/0009

    Abstract: Systems and methods for data transport include encoding one or more streams of input data using one or more Quasi-Cyclic Low Density Parity Check (QC-LDPC) encoders; controlling irregularity of the QC-LDPC encoded data while preserving the quasi-cyclic nature of the LDPC encoded data and eliminating the error floor phenomenon. A parity-check matrix may be partially reconfigured to adapt one or more code rates; and one or more signals are generated using a mapper, wherein the output of the mapper is modulated onto a transmission medium. One or more streams of input data are received, and the streams are decoded using one or more QC-LDPC decoders.

    Abstract translation: 用于数据传输的系统和方法包括使用一个或多个准循环低密度奇偶校验（QC-LDPC）编码器来编码一个或多个输入数据流; 控制QC-LDPC编码数据的不规则性，同时保留LDPC编码数据的准循环性质并消除错误出现现象。 可以部分地重新配置奇偶校验矩阵以适应一个或多个码率; 并且使用映射器生成一个或多个信号，其中映射器的输出被调制到传输介质上。 接收一个或多个输入数据流，并且使用一个或多个QC-LDPC解码器解码流。

    Low Cost Secure Submarine ROADM Branching Unit Using Bidirectional Wavelength-Selective Switch
    200.
    发明申请
    Low Cost Secure Submarine ROADM Branching Unit Using Bidirectional Wavelength-Selective Switch 有权
    低成本安全潜艇ROADM分支单元使用双向波长选择开关

    公开(公告)号：US20160149663A1

    公开(公告)日：2016-05-26

    申请号：US14938771

    申请日：2015-11-11

    Applicant: NEC Laboratories America, Inc.

    Inventor： Philip Nan Ji ,  Ryuji Aida ,  Ting Wang

    IPC: H04J14/02 ,  H04Q11/00 ,  H04B10/80

    CPC classification number: H04J14/0212 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0216 ,  H04J14/0221

    Abstract: A reconfigurable optical add/drop multiplexer (ROADM) unit includes a first optical circulator coupled to a first terminal; a second optical circulator coupled to a second terminal; a third optical circulator coupled to a third terminal; a fourth optical circulator coupled to a fourth terminal; a first wavelength-selective switch (WSS), coupled to the first, second, and third optical circulators; a second WSS coupled to the first, second, and fourth optical circulators, wherein the first and second WSSes are bidirectional operated; a first 1:2 coupler positioned between the first circulator and the first and second WSSes; a second 1:2 coupler positioned between the second circulator and the first and second WSSes.

    Abstract translation: 可重新配置的光分插复用器（ROADM）单元包括耦合到第一终端的第一光循环器; 耦合到第二端子的第二光循环器; 耦合到第三端子的第三光循环器; 耦合到第四端子的第四光循环器; 耦合到第一，第二和第三光学循环器的第一波长选择开关（WSS）; 耦合到所述第一，第二和第四光学循环器的第二WSS，其中所述第一和第二WSS是双向操作的; 位于第一循环器和第一和第二WSS之间的第一1:2耦合器; 位于第二循环器和第一和第二WSS之间的第二1：2耦合器。

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