公开(公告)号：US09461745B2

公开(公告)日：2016-10-04

申请号：US13427071

申请日：2012-03-22

申请人： Olga Vassilieva ,  Inwoong Kim ,  Motoyoshi Sekiya

发明人： Olga Vassilieva ,  Inwoong Kim ,  Motoyoshi Sekiya

IPC分类号： G06F7/60 ,  H04B10/27

CPC分类号： H04B10/27

摘要： According to an aspect of an embodiment, a method of modeling an optical signal transmission path may include obtaining first transmission characteristics of an optical signal transmission path within an optical network based on a parameter of the optical network and randomly changing states of polarization of an optical signal within the optical signal transmission path. The method may also include obtaining second transmission characteristics of the optical signal transmission path based on the parameter and a first fixed state of polarization of the optical signal. The method may also include correlating the first transmission characteristics with the second transmission characteristics to obtain an effective state of polarization of the optical signal. A simulation of the optical signal transmission path based on the parameter and the effective state of polarization of the optical signal may produce transmission characteristics that may approximate the first transmission characteristics.

摘要翻译： 根据实施例的一个方面，对光信号传输路径进行建模的方法可以包括基于光网络的参数获得光网络内的光信号传输路径的第一传输特性，并随机改变光学器件的偏振态 信号在光信号传输路径内。 该方法还可以包括基于参数和光信号的第一固定偏振状态来获得光信号传输路径的第二传输特性。 该方法还可以包括将第一传输特性与第二传输特性相关联以获得光信号的有效极化状态。 基于参数和光信号的有效极化状态的光信号传输路径的模拟可以产生可以接近第一传输特性的传输特性。

公开(公告)号：US08965198B2

公开(公告)日：2015-02-24

申请号：US13658587

申请日：2012-10-23

申请人： Qiong Zhang ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

发明人： Qiong Zhang ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04J14/0284 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0268

摘要： A method for shared mesh restoration includes configuring a switch to allow sharing of a plurality of backup line cards across a plurality of node degrees associated with a reconfigurable optical add/drop multiplexer (ROADM). The switch is communicatively coupled to the ROADM. The method further includes configuring a number of backup line cards coupled to the switch. The number of backup line cards is based on determining a number of active backup lightpaths for each of a plurality of network failures associated with each of the plurality of node degrees of the ROADM, identifying which node degree and failure has the largest number of active backup lightpaths for all of the plurality of node degrees of the ROADM and for each of the plurality of network failures, and determining the number of backup line cards to configure based on the identified largest number of active backup lightpaths.

摘要翻译： 一种用于共享网格恢复的方法包括配置交换机以允许在与可重配置光分插复用器（ROADM）相关联的多个节点度上共享多个备用线卡。 交换机通信耦合到ROADM。 该方法还包括配置耦合到交换机的多个备用线路卡。 备用线路卡的数量基于确定与ROADM的多个节点度中的每一个相关联的多个网络故障中的每一个的主动备用光路的数量，识别哪个节点度和故障具有最大数量的主动备份 用于ROADM的所有多个节点度数和多个网络故障中的每一个的光路，以及基于所识别的最大数量的主动备用光路确定要配置的备用线路卡的数量。

公开(公告)号：US08942114B2

公开(公告)日：2015-01-27

申请号：US13165352

申请日：2011-06-21

申请人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04L12/26 ,  H04L12/28

CPC分类号： H04L43/0882

摘要： A system and method are provided for monitoring traffic in a network comprising a plurality of links, wherein each of the plurality of links comprises a plurality of neighboring pairs of slots. The system and method may include identifying a first usage status and a second usage status, calculating a utilization entropy value based at least on the difference between the first and second usage status, iteratively calculating a set of utilization entropy values for a portion of the network, and calculating an overall utilization entropy value for the portion of the network under analysis based at least on a statistical analysis of the set of utilization entropy values.

摘要翻译： 提供了一种用于监视包括多个链路的网络中的业务的系统和方法，其中所述多个链路中的每一个包括多个相邻的时隙对。 系统和方法可以包括识别第一使用状态和第二使用状态，至少基于第一和第二使用状态之间的差异来计算使用熵值，迭代地计算网络的一部分的一组利用熵值 以及至少基于所述利用熵值集合的统计分析来计算所分析的网络的部分的总利用熵值。

公开(公告)号：US08810782B2

公开(公告)日：2014-08-19

申请号：US13207796

申请日：2011-08-11

申请人： Motoyoshi Sekiya ,  Yusaku Yamamoto

发明人： Motoyoshi Sekiya ,  Yusaku Yamamoto

IPC分类号： G01N21/00 ,  H04B10/077

摘要： A dispersion measurement apparatus includes: a pulse generator to output optical pulses including an optical pulse with a first wavelength and an optical pulse with a second wavelength to an optical transmission path, the second wavelength being different from the first wavelength; a reception pulse analyzer including an optical receiver that receives the optical pulses output by the pulse generator, and an analyzer that performs a wavelet transform on an electrical pulse output through the reception performed by the optical receiver; and a calculator to detect, based on a result of the wavelet transform, a time difference between the optical pulse with the first wavelength and the optical pulse with the second wavelength, and to determine dispersion in the optical transmission path.

公开(公告)号：US08699884B2

公开(公告)日：2014-04-15

申请号：US13137933

申请日：2011-09-21

申请人： Takashi Toyomaki ,  Motoyoshi Sekiya

发明人： Takashi Toyomaki ,  Motoyoshi Sekiya

IPC分类号： H04J14/02

CPC分类号： H04B10/0773 ,  H04B2210/074 ,  H04J14/0212 ,  H04J14/0227 ,  H04J14/0258 ,  H04J14/0276

摘要： An optical transmission system includes a plurality of optical nodes that transmits wavelength multiplexing light including a plurality of signal light components having different wavelengths, wherein each of the optical nodes includes superimposed signal light generation circuit which superimposes a low frequency signal having a common frequency on a corresponding signal light component included in the wavelength multiplexing light; low frequency signal extraction circuit which extracts a low frequency signal having a frequency of a given range from a corresponding signal light component; and pass-through node number measurement circuit which measures, for each of the signal light components, a pass-through node number based on the frequency of the low frequency signal extracted by the low frequency signal extraction circuit, the pass-through node number being the number of optical nodes through which the signal light component has passed before being transmitted to a specific optical node.

摘要翻译： 一种光传输系统包括多个发送包括具有不同波长的多个信号光分量的波分复用光的光节点，其中每个光节点包括叠加信号光生成电路，该电路将具有共同频率的低频信号叠加在 包括在波长复用光中的相应信号光分量; 低频信号提取电路，从对应的信号光分量中提取具有给定范围的频率的低频信号; 以及直通节点号测量电路，对于每个信号光分量，测量基于由低频信号提取电路提取的低频信号的频率的直通节点数，直通节点数为 信号光分量在被传输到特定光节点之前经过的光节点的数量。

公开(公告)号：US20120328286A1

公开(公告)日：2012-12-27

申请号：US13165352

申请日：2011-06-21

申请人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B17/00 ,  H04L12/26

CPC分类号： H04L43/0882

摘要： A system and method are provided for monitoring traffic in a network comprising a plurality of links, wherein each of the plurality of links comprises a plurality of neighboring pairs of slots. The system and method may include identifying a first usage status and a second usage status, calculating a utilization entropy value based at least on the difference between the first and second usage status, iteratively calculating a set of utilization entropy values for a portion of the network, and calculating an overall utilization entropy value for the portion of the network under analysis based at least on a statistical analysis of the set of utilization entropy values.

摘要翻译： 提供了一种用于监视包括多个链路的网络中的业务的系统和方法，其中所述多个链路中的每一个包括多个相邻的时隙对。 系统和方法可以包括识别第一使用状态和第二使用状态，至少基于第一和第二使用状态之间的差异来计算使用熵值，迭代地计算网络的一部分的一组利用熵值 以及至少基于所述利用熵值集合的统计分析来计算所分析的网络的部分的总利用熵值。

公开(公告)号：US20120263455A1

公开(公告)日：2012-10-18

申请号：US13175154

申请日：2011-07-01

申请人： Xi Wang ,  Qiong Zhang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Qiong Zhang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B17/00

CPC分类号： H04J14/026 ,  H04J14/0224 ,  H04J14/0257

摘要： In accordance with embodiments of the present disclosure, a method may include determining individual spectrum requirements for each of a plurality of signals to be communicated in an optical network, wherein a first signal of the plurality of signals has a first spectrum requirement and a second signal of the plurality of signals has a second spectrum requirement. The method may also include calculating a minimum spectrum granularity based on the individual spectrum requirements. The method may further include assigning each particular signal a channel spectrum equal to an integer multiple of the minimum spectrum granularity.

摘要翻译： 根据本公开的实施例，一种方法可以包括确定要在光网络中传送的多个信号中的每个信号的各个频谱要求，其中多个信号中的第一信号具有第一频谱要求和第二信号 的多个信号具有第二频谱要求。 该方法还可以包括基于各个频谱要求来计算最小频谱粒度。 该方法还可以包括将每个特定信号分配为等于最小频谱粒度的整数倍的信道频谱。

公开(公告)号：US07742702B2

公开(公告)日：2010-06-22

申请号：US11360386

申请日：2006-02-24

申请人： Motoyoshi Sekiya

发明人： Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04B10/25137 ,  H04B10/505

摘要： A chirp switching circuit comprises a Mach-Zehnder modulator having a Y-branched part for branching an incoming optical signal into first and second optical signals and an X-branched part merging the first and second optical signals with each other, the Mach-Zehnder modulator causing phase modulation in the first and second optical signals by a modulation signal, and a directional coupling optical switch that switches first and second optical output signals output from the X-branched part of the Mach-Zehnder modulator by merging the first and second output optical signals in response to a chirp switching control signal.

摘要翻译： 啁啾开关电路包括具有Y分支部分的马赫 - 曾德调制器，用于将入射光信号分支为第一和第二光信号，以及将第一和第二光信号彼此合并的X分支部分，马赫 - 曾德调制器 通过调制信号引起第一和第二光信号中的相位调制，以及定向耦合光开关，其通过合并第一和第二输出光学器件来切换从马赫 - 曾德调制器的X分支部分输出的第一和第二光输出信号 响应啁啾开关控制信号的信号。

公开(公告)号：US07474854B2

公开(公告)日：2009-01-06

申请号：US10731266

申请日：2003-12-09

申请人： Motoyoshi Sekiya ,  Ryosuke Goto

发明人： Motoyoshi Sekiya ,  Ryosuke Goto

IPC分类号： H04J14/02

CPC分类号： H04B10/25073

摘要： In an optical transmission system which can keep a flat pass characteristic within an optical signal modulation band, a spectrum of a dropped optical signal within a modulation band per channel is monitored, and non-flatness for the optical signal is compensated by detecting the non-flatness of a pass characteristic of a transmission line from the spectrum.

摘要翻译： 在能够在光信号调制带内保持平坦通过特性的光传输系统中，监视每个通道的调制频带内的丢弃光信号的频谱，通过检测非信道光信号来补偿光信号的非平坦度， 来自频谱的传输线的通过特性的平坦度。

公开(公告)号：US07460789B2

公开(公告)日：2008-12-02

申请号：US11019420

申请日：2004-12-23

申请人： Kaori Odate ,  Motoyoshi Sekiya ,  Takuya Miyashita

发明人： Kaori Odate ,  Motoyoshi Sekiya ,  Takuya Miyashita

IPC分类号： H04J14/02 ,  H04B10/12

CPC分类号： H04B10/564 ,  H04B10/255

摘要： A control method, which is applicable to a variety of network configurations, controls an optical transmission system to determine optimum optical input power to a transmission path for increased optical transmission quality. The optical transmission system has terminal stations, repeaters, dispersion compensation modules, and a dispersion compensation controller. The terminal stations transmit and receive an optical signal through an optical fiber transmission path. The repeaters are disposed in the optical fiber transmission path for amplifying the optical signal. The dispersion compensation modules are disposed in the terminal stations and the repeaters for compensating for dispersion of the optical signal. The dispersion compensation controller determines a target value for a nonlinear phase shift, which is an indication of a self-phase modulation caused by a transmission medium of the optical fiber transmission path, to have a maximum residual dispersion tolerance, and adjusts at least one of the input powers applied to transmission paths connected to the terminal stations or the repeaters and the input powers applied to the dispersion compensation modules to equalize the nonlinear phase shifts of paths in the optical transmission system to the target value.

摘要翻译： 适用于各种网络配置的控制方法控制光传输系统以确定用于提高光传输质量的传输路径的最佳光输入功率。 光传输系统具有终端站，中继器，色散补偿模块和色散补偿控制器。 终端站通过光纤传输路径发送和接收光信号。 中继器设置在用于放大光信号的光纤传输路径中。 色散补偿模块设置在终端站和中继器中，用于补偿光信号的色散。 色散补偿控制器确定作为由光纤传输路径的传输介质引起的自相位调制的指示的非线性相移的目标值具有最大残余色散容限，并且调整至少一个 施加到连接到终端站或中继器的传输路径的输入功率和施加到色散补偿模块的输入功率，以将光传输系统中路径的非线性相移均衡到目标值。