公开(公告)号：US07212285B2

公开(公告)日：2007-05-01

申请号：US10992014

申请日：2004-11-19

申请人： Ryosuke Goto ,  Motoyoshi Sekiya

发明人： Ryosuke Goto ,  Motoyoshi Sekiya

IPC分类号： G01J3/28

CPC分类号： G01J3/18 ,  G01J3/027 ,  G01J3/04 ,  G01J3/1895 ,  G01J3/453

摘要： An optical measurement device capable of improving optical spectrum measurement accuracy without the need to structurally decrease a slit width. A diffraction grating for dispersing measurement light into respective different wavelengths is rotated in a given direction to produce diffracted light of selected wavelengths. A focusing lens converges the diffracted light to produce a converged beam. A slit control section varies the slit width at a constant scan speed to open or close the slit, thereby varying the passing bandwidth for the converged beam. A light receiving/measuring section receives the light passed through the slit, obtains a level function indicative of the power level of the received light that varies with change in optical frequency, and differentiates the level function by the scan speed to reproduce the spectrum profile of the measurement light.

摘要翻译： 一种能够提高光谱测量精度而不需要在结构上减小狭缝宽度的光学测量装置。 用于将测量光分散到各个不同波长的衍射光栅在给定方向上旋转以产生所选波长的衍射光。 聚焦透镜会聚衍射光以产生会聚光束。 狭缝控制部分以恒定的扫描速度改变狭缝宽度以打开或关闭狭缝，从而改变会聚束的通过带宽。 光接收/测量部分接收通过狭缝的光，获得指示随着光频率的变化而变化的接收光的功率电平的电平函数，并且将电平函数除以扫描速度，以再现频谱分布 测量灯。

公开(公告)号：US20060127101A1

公开(公告)日：2006-06-15

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入引脚的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US20050219682A1

公开(公告)日：2005-10-06

申请号：US10945272

申请日：2004-09-21

申请人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

发明人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

IPC分类号： G02F1/35 ,  G02F1/365 ,  H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13 ,  H01S3/16 ,  H01S3/30 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02

CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/1608 ,  H01S2301/04 ,  H04B10/2941 ,  H04B2210/003

摘要： The present invention relates to an optical amplifier and, in particular, it relates to multistage optical amplification having a feature for compensating for the tilt that is generated when a signal having a plurality of optical wavelengths and the like according to a wavelength division multiplexing (WDM) method is amplified in a wide bandwidth. The multistage optical amplifier comprises: a plurality of optical amplifiers that are connected in a multistage manner; and a common control section for commonly controlling pumping light powers of said plurality of optical amplifiers, wherein said common control section includes: tilt detection means for detecting amounts of tilt of each of said plurality of optical amplifiers; and tilt cancellation means for controlling the pumping light powers of said plurality of optical amplifiers so that the amounts of tilt of each of the optical amplifiers detected by said tilt detection means cancel each other.

摘要翻译： 光放大器技术领域本发明涉及一种光放大器，特别涉及具有补偿根据波分多路复用（WDM）具有多个光波长等的信号时产生的倾斜的特征的多级光放大 ）方法在宽带宽中被放大。 多级光放大器包括：以多级方式连接的多个光放大器; 以及用于共同控制所述多个光放大器的泵浦光功率的公共控制部分，其中所述公共控制部分包括：倾斜检测装置，用于检测所述多个光放大器中的每一个的倾斜量; 以及用于控制所述多个光放大器的泵浦光功率的倾斜消除装置，使得由所述倾斜检测装置检测的每个光放大器的倾斜量相互抵消。

公开(公告)号：US06930824B1

公开(公告)日：2005-08-16

申请号：US09080909

申请日：1998-05-19

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： G02B6/34 ,  H04B10/18 ,  H04J14/02 ,  H04B10/17 ,  H01S3/30

CPC分类号： H04J14/0224 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength λ0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用并传输具有不同波长的多个信道的光信号时，包括预定带宽的四波混频抑制保护带包括零色散波长λ<0> 设置光纤，并且多路复用的多个信道的信号光波被布置在保护带外部的短波长侧和较长波长侧中的一个上。

公开(公告)号：US06243176B1

公开(公告)日：2001-06-05

申请号：US08917292

申请日：1997-08-25

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： H04J1402

CPC分类号： G02B6/29377 ,  G02B6/4215 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02 ,  H04J14/0224

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength &lgr;&thgr; of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用和发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长的预定带宽的四波混频抑制保护带，并且信号光 要复用的多个信道的波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。

公开(公告)号：US5696614A

公开(公告)日：1997-12-09

申请号：US781137

申请日：1997-01-09

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： H04J14/00 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/299 ,  H04J14/02 ,  H04B10/00

CPC分类号： G02B6/29377 ,  G02B6/4215 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04J14/0224 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength .lambda..sub.0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用并发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长λ0的预定带宽的四波混频抑制保护带，并且信号 要复用的多个信道的光波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。

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.