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    Virtual networking embedding procedure in an optical wavelength division multiplexing (WDM) network
    22.
    发明授权
    Virtual networking embedding procedure in an optical wavelength division multiplexing (WDM) network 有权
    虚拟网络嵌入过程在光波分复用（WDM）网络中

    公开(公告)号：US09160477B2

    公开(公告)日：2015-10-13

    申请号：US14177667

    申请日：2014-02-11

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ankitkumar Patel ,  Philip Nan Ji

    IPC: H04J14/00 ,  H04J14/02 ,  H04L12/721

    CPC classification number: H04J14/021 ,  H04J14/0224 ,  H04J14/0257 ,  H04L45/12

    Abstract: A method implemented in a network apparatus used in a wavelength division multiplexing (WDM) optical network is disclosed. The method includes (a) selecting unconsidered virtual link (VL) (i,j) with a maximum cost, a cost being requested line rate rij on VL(i,j)×shortest distance between nodes i and j, (b) selecting unconsidered route k out of K-shortest routes between nodes i and j of VL(i,j), (c) determining a bit map of unconsidered route k, (d) finding a modulation format that supports requested line rate rij with minimum spectrum ⌈ r ij s z ⌉ , where Sz is spectral efficiency with which the modulation format transmits a channel, (e) finding ⌈ r ij s z ⌉ consecutive spectrum slots at M lowest wavelengths in the bit map of selected route k, and (f) determining fragmentation factor Fkm after provisioning a channel at each wavelength m on selected route k, where 1≦m≦M. Other apparatuses, systems, and methods also are disclosed.

    Abstract translation: 公开了一种在波分多路复用（WDM）光网络中使用的网络装置中实现的方法。 该方法包括（a）以最大成本选择未考虑的虚拟链路（VL）（i，j），在VL（i，j）上请求线路速率rij的成本×节点i和j之间的最短距离，（b）选择 在VL（i，j）的节点i和j之间的k个最短路由中未考虑路由k，（c）确定未考虑路由k的位图，（d）找到支持所需线路速率rij的调制格式，具有最小频谱 ⌈r ij sz⌉，其中Sz是调制格式发送信道的频谱效率，（e）在所选路由k的位图中的M个最低波长处找到⌈r ij sz⌉个连续频谱，，以及（f）确定 在选择的路由k上为每个波长m提供信道之后的分段因子Fkm，其中1＆nlE; m＆nlE; M。 还公开了其他装置，系统和方法。

    Adaptive Optical Amplifier for WDM Systems
    24.
    发明申请
    Adaptive Optical Amplifier for WDM Systems 有权
    用于WDM系统的自适应光放大器

    公开(公告)号：US20140334814A1

    公开(公告)日：2014-11-13

    申请号：US14271539

    申请日：2014-05-07

    Applicant: NEC Laboratories America, Inc.

    Inventor： Philip Nan Ji ,  Junqiang Hu ,  Ting Wang

    IPC: H04J14/02 ,  H04B10/079

    CPC classification number: H04J14/0221 ,  H04B10/07953 ,  H04B10/07955 ,  H04B10/0797 ,  H04B10/296

    Abstract: An optical amplifier that uses software-defined optical networking (SDON) technology, with a centralized controller and flexible physical hardware (the adaptive amplifier here) to optimize the power distribution among different WDM channels in the amplifier. It considers the detailed information for each channel through the information from centralized controller. It is suitable for both single line rate and mixed line rate system, and is suitable for a wavelength division multiplexing WDM system with the same signal type or different signal types.

    Abstract translation: 一种使用软件定义光网络（SDON）技术的光放大器，具有集中控制器和灵活的物理硬件（这里的自适应放大器），以优化放大器中不同WDM通道之间的功率分配。 它通过集中控制器的信息来考虑每个通道的详细信息。 适用于单线速率和混合线速系统，适用于具有相同信号类型或不同信号类型的波分复用WDM系统。

    Power Efficient Multi-Degree ROADM Using Variable Optical Splitter
    27.
    发明申请
    Power Efficient Multi-Degree ROADM Using Variable Optical Splitter 审中-公开
    使用可变光分路器的高效多级ROADM

    公开(公告)号：US20160301495A1

    公开(公告)日：2016-10-13

    申请号：US15089699

    申请日：2016-04-04

    Applicant: NEC Laboratories America, Inc.

    Inventor： Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

    IPC: H04J14/02

    CPC classification number: H04J14/021 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0217

    Abstract: A reconfigurable optical add/drop multiplexer (ROADM) system includes a transponder aggregator section with one or more transponder aggregators; N input ports and N output ports, each coupled to the transponder aggregators and to a cross-connect module having a variable optical splitter or variable optical coupler (VOS/VOC); and a controller to set the VOS/VOC into one of a Multicast & Select configuration and a Route & Combine configuration.

    Abstract translation: 可重新配置的光分插复用器（ROADM）系统包括具有一个或多个转发器聚合器的转发器聚合器部分; N个输入端口和N个输出端口，每个输出端口耦合到应答器聚合器和具有可变分光器或可变光耦合器（VOS / VOC）的交叉连接模块; 以及将VOS / VOC设置为组播＆选择配置和路由和组合配置之一的控制器。

    Low Cost Secure ROADM Branching Unit With Redundancy Protection
    28.
    发明申请
    Low Cost Secure ROADM Branching Unit With Redundancy Protection 有权
    低成本安全ROADM分支单元具有冗余保护

    公开(公告)号：US20160301467A1

    公开(公告)日：2016-10-13

    申请号：US15090642

    申请日：2016-04-05

    Applicant: NEC Laboratories America, Inc.

    Inventor： Philip Nan Ji ,  Ting Wang ,  Ryuji Aida

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

    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.

    Abstract translation: 通信系统包括主模块，其具有：第一中继线和分支输入和输出端口，每个耦合到第一进/出耦合器，耦合到第一循环器的第一输入/输出耦合器，并且循环器又耦合到第一中心耦合器; 第二中继线分支输入和输出端口，每个耦合到第二输入/输出耦合器，每个第二输入/输出耦合器耦合到第二循环器; 以及耦合到第一中心耦合器的第一和第二双向波长选择开关（WSS）。 该系统还包括具有第一干线和分支输入和输出端口的二次模块，每个耦合到第一进/出耦合器，耦合到第三循环器的第一输入/输出耦合器，并且循环器又耦合到第二中心耦合器; 第二中继分支输入和输出端口，每个耦合到第二输入/输出耦合器，耦合到第四循环器的每个第二输入/输出耦合器，以及耦合到第二中心耦合器的第三和第四双向波长选择开关（WSS）。 该系统还包括一个或多个将主模块WSS输出与次模块WSS输出耦合的2×2开关。

    Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networks
    29.
    发明授权
    Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networks 有权
    光网络中的动态波长虚拟化和/或按需流量配置

    公开(公告)号：US09420359B2

    公开(公告)日：2016-08-16

    申请号：US14184787

    申请日：2014-02-20

    Applicant: NEC Laboratories America, Inc.

    Inventor： Neda Cvijetic ,  Philip Nan Ji ,  Ting Wang ,  Akihiro Tanaka

    IPC: H04Q11/00 ,  H04J14/02

    CPC classification number: H04Q11/0067 ,  H04J14/0224 ,  H04J14/0267 ,  H04Q2011/0086

    Abstract: A network apparatus used in an optical network is disclosed. The network apparatus includes one or more first tunable and temperature controlled (TTC) lasers, one or more transmitters each of which is connected to one of said one or more TTC lasers, one or more second TTC lasers, one or more digital signal processing (DSP) transponders (TPNDs) each of which is connected to one of said one or more second TTC lasers, one or more receivers, and a controller to control said one or more transmitters and said one or more DSP TPNDs, wherein said one or more transmitters defragment an optical access spectrum, and said one or more DSP TPNDs exploit a newly available spectrum. Other apparatuses, systems, and methods also are disclosed.

    Abstract translation: 公开了一种在光网络中使用的网络设备。 网络设备包括一个或多个第一可调谐和温度控制（TTC）激光器，一个或多个发射器，每个发射器连接到所述一个或多个TTC激光器之一，一个或多个第二TTC激光器，一个或多个数字信号处理 DSP）转发器（TPND），每个转发器（TPND）连接到所述一个或多个第二TTC激光器之一，一个或多个接收器，以及控制器，用于控制所述一个或多个发射机和所述一个或多个DSP TPND，其中所述一个或多个 发射机对光接入频谱进行碎片整理，并且所述一个或多个DSP TPND利用新可用频谱。 还公开了其他装置，系统和方法。

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