公开(公告)号：US07274878B2

公开(公告)日：2007-09-25

申请号：US10404045

申请日：2003-04-02

申请人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

发明人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

IPC分类号： H04B10/00 ,  H04B10/12 ,  H04J14/02

CPC分类号： H04B10/25253 ,  H04B2210/256 ,  H04J14/0206 ,  H04J14/0213

摘要： Dispersion compensation values are set so as to be transmittable to any path groups in a WDM optical communication system having OADM nodes, which includes transmitting-end and receiving-end terminal nodes; a WDM optical communication transmission line including a plurality of spans each having an optical fiber, the plurality of spans joining the transmitting-end and receiving-end terminal nodes; and a plurality of add drop multiplexing (OADM) nodes disposed on the optical communication transmission line; wherein when taking as the reference a residual dispersion target value of between the transmitting-end terminal and receiving-end terminal nodes, a residual dispersion target value for a node segment between one of the terminal nodes and one of the add drop multiplexing (OADM) nodes and a residual dispersion target value for a node-to-node segment between two of the add drop multiplexing (OADM) nodes are set so as to be proportional to ratios of the span counts in the node segment and in the node-to-node segment, respectively, to the total span count between the transmitting-end and receiving-end terminal nodes.

摘要翻译： 色散补偿值被设置为可以发送到具有包括发送端和接收端终端节点的OADM节点的WDM光通信系统中的任何路径组; WDM光通信传输线，其包括多个具有光纤的跨度，所述多个跨接器连接所述发送端和接收端终端节点; 以及设置在所述光通信传输线上的多个添加分集复用（OADM）节点; 其中，当以发送端终端和接收端终端节点之间的残留分散目标值作为参考时，在一个终端节点之间的节点的剩余分散目标值与加法分集复用（OADM）之一之间， 节点和两个添加分集复用（OADM）节点之间的节点到节点分段的残余分散目标值被设置成与节点分段和节点到节点中的跨度计数的比率成比例， 节点段分别为发送端和接收端终端之间的总宽度计数。

公开(公告)号：US07248804B2

公开(公告)日：2007-07-24

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： H04B10/16

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Pin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：US07133610B1

公开(公告)日：2006-11-07

申请号：US09168688

申请日：1998-10-09

申请人： Yoshitaka Shimura ,  Motoyoshi Sekiya ,  Keisuke Imai

发明人： Yoshitaka Shimura ,  Motoyoshi Sekiya ,  Keisuke Imai

IPC分类号： H04B10/08 ,  H04B10/04 ,  H04J14/02

CPC分类号： H04B10/50575 ,  H04B10/07957 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572 ,  H04B10/588

摘要： The present invention relates to an optical sender applicable to WDM (wavelength division multiplexing), and a primary object of the present invention is to prevent interchannel crosstalk in WDM. The optical sender includes a light source for outputting a light beam, an optical modulator for modulating the light beam in accordance with a main signal to output an optical signal, and a unit for shutting down the optical signal when receiving at least one of a power alarm relating to on/off of power supply and a wavelength alarm relating to the wavelength of the light beam.

摘要翻译： 本发明涉及适用于WDM（波分复用）​​的光学发送机，本发明的主要目的是防止WDM中的信道间串扰。 光发送器包括用于输出光束的光源，用于根据主信号调制光束以输出光信号的光调制器，以及用于在接收至少一个功率时关闭光信号的单元 关于电源的开/关的报警和与光束的波长有关的波长警报。

公开(公告)号：US20060013589A1

公开(公告)日：2006-01-19

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： 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。

公开(公告)号：US20050265725A1

公开(公告)日：2005-12-01

申请号：US10954310

申请日：2004-10-01

申请人： Satoru Okano ,  Motoyoshi Sekiya ,  Kaori Odate ,  Tatsuru Iwaoka

发明人： Satoru Okano ,  Motoyoshi Sekiya ,  Kaori Odate ,  Tatsuru Iwaoka

IPC分类号： H04B10/2507 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  H04B10/12

CPC分类号： H04B10/572 ,  H04B10/25133

摘要： In a long-distance and large-capacity optical transmission system, a dispersion compensating device showing a wavelength-dependency of dispersion characteristic is provided in a transmission line which makes a connection between a transmission terminal node and a reception terminal node. The reception terminal node acquires a dispersion quantity relative to single-wavelength light outputted from a wavelength-variable transmitter which is provided in the transmission terminal node for outputting single-wavelength light, and transmits wavelength control information corresponding to the acquired dispersion quantity to the transmission terminal node. The transmission terminal node varies the wavelength of the transmitter on the basis of the transmitted wavelength control information. This enables acquiring an optimum dispersion compensation quantity with a simple configuration and optimizing a dispersion compensation quantity for each channel at the transmission of wavelength-multiplexed light.

摘要翻译： 在长距离和大容量光传输系统中，在发送终端节点和接收终端节点之间的连接的传输线路中提供表示色散特性的波长依赖性的色散补偿装置。 接收终端节点获取相对于设置在用于输出单波长光的发送终端节点中的波长可变发射机输出的单波长光的色散量，并将与获取的色散量对应的波长控制信息发送到发送 终端节点。 发送终端节点根据发送的波长控制信息改变发送机的波长。 这使得能够以简单的配置获得最佳色散补偿量，并且在波分复用光的传输时优化每个通道的色散补偿量。

公开(公告)号：US06417945B2

公开(公告)日：2002-07-09

申请号：US09799639

申请日：2001-03-07

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

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

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： An optical transmission system in which a wavelength-division-multplexed (WDM) optical signal including a plurality of optical signals having different wavelengths is demultiplexed into first optical signals and second optical signals. The second optical signals have wavelengths longer than wavelengths of the first optical signals. A first dispersion compensator compensates dispersion of the first optical signals. A second dispersion compensator compensates dispersion of the second optical signals. The dispersion compensated first and second optical signals are then multiplexed together.

摘要翻译： 一种光传输系统，其中包括具有不同波长的多个光信号的波分复用（WDM）光信号被解复用为第一光信号和第二光信号。 第二光信号具有比第一光信号的波长长的波长。 第一色散补偿器补偿第一光信号的色散。 第二色散补偿器补偿第二光信号的色散。 然后将色散补偿的第一和第二光信号复用在一起。

公开(公告)号：US5991477A

公开(公告)日：1999-11-23

申请号：US010518

申请日：1998-01-21

申请人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

发明人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

IPC分类号： H04B10/2507 ,  H04B10/071 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2537 ,  H04B10/2563 ,  H04J14/02 ,  H04J14/08 ,  H04L7/00 ,  H04L7/027 ,  H04L7/033 ,  H04L7/06 ,  H04Q11/00 ,  H04Q11/04 ,  H04B1/06

CPC分类号： H04B10/25133 ,  H04B10/0795 ,  H04B10/07957 ,  H04B10/0797 ,  H04B10/0799 ,  H04B10/25137 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/66 ,  H04B10/67 ,  H04B10/675 ,  H04J14/086 ,  H04L7/0037 ,  H04L7/0075 ,  H04Q11/0001 ,  G02F2203/21 ,  H04B2210/252 ,  H04B2210/254 ,  H04J14/02 ,  H04J14/0298 ,  H04J14/08 ,  H04L7/027 ,  H04L7/06

摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section, and control of signal light wavelength in a tunable light source, control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral technique, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.

摘要翻译： 本发明提供了一种优化传输条件以实现大容量传输的技术，并且还提供了使得大容量传输成为可能的光复用的实际实现的外围技术。 在透射特性测量部分中测量传输特性，并且执行可调谐光源中的信号光波长的控制，预激励量的控制，色散补偿量的控制和/或光功率的控制，以实现 传输特性最好。 波长色散由色散补偿器故意引入，以减少非线性效应。 可调激光器用于优化每个光放大中继器部分的信号光波长。 提供了诸如漂移补偿，时钟提取，光信号通道识别，时钟相位稳定等的外围技术用于实现光学复用。

公开(公告)号：US5896217A

公开(公告)日：1999-04-20

申请号：US782971

申请日：1997-01-14

申请人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

发明人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

IPC分类号： H04B10/2507 ,  H04B10/071 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2537 ,  H04B10/2563 ,  H04J14/02 ,  H04J14/08 ,  H04L7/00 ,  H04L7/027 ,  H04L7/033 ,  H04L7/06 ,  H04Q11/00 ,  H04Q11/04 ,  H04B10/06

CPC分类号： H04B10/25133 ,  H04B10/0795 ,  H04B10/07957 ,  H04B10/0797 ,  H04B10/0799 ,  H04B10/25137 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/66 ,  H04B10/67 ,  H04B10/675 ,  H04J14/086 ,  H04L7/0037 ,  H04L7/0075 ,  H04Q11/0001 ,  G02F2203/21 ,  H04B2210/252 ,  H04B2210/254 ,  H04J14/02 ,  H04J14/0298 ,  H04J14/08 ,  H04L7/027 ,  H04L7/06

摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section, and control of signal light wavelength in a tunable light source, control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral techniques, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.

公开(公告)号：US5815294A

公开(公告)日：1998-09-29

申请号：US778544

申请日：1997-01-03

申请人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

发明人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

IPC分类号： H04B10/2507 ,  H04B10/071 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2537 ,  H04B10/2563 ,  H04J14/02 ,  H04J14/08 ,  H04L7/00 ,  H04L7/027 ,  H04L7/033 ,  H04L7/06 ,  H04Q11/00 ,  H04Q11/04 ,  H04B10/08 ,  H04B10/00

CPC分类号： H04B10/25133 ,  H04B10/0795 ,  H04B10/07957 ,  H04B10/0797 ,  H04B10/0799 ,  H04B10/25137 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/66 ,  H04B10/67 ,  H04B10/675 ,  H04J14/086 ,  H04L7/0037 ,  H04L7/0075 ,  H04Q11/0001 ,  G02F2203/21 ,  H04B2210/252 ,  H04B2210/254 ,  H04J14/02 ,  H04J14/0298 ,  H04J14/08 ,  H04L7/027 ,  H04L7/06

摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section, and control of signal light wavelength in a tunable light source, control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral techniques, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.

摘要翻译： 本发明提供了一种优化传输条件以实现大容量传输的技术，并且还提供了使得大容量传输成为可能的光复用的实际实现的外围技术。 在透射特性测量部分中测量传输特性，并且执行可调谐光源中的信号光波长的控制，预激励量的控制，色散补偿量的控制和/或光功率的控制，以实现 传输特性最好。 波长色散由色散补偿器故意引入，以减少非线性效应。 可调激光器用于优化每个光放大中继器部分的信号光波长。 提供了诸如漂移补偿，时钟提取，光信号通道识别，时钟相位稳定等的外围技术，用于实施光学多路复用。

公开(公告)号：US5636046A

公开(公告)日：1997-06-03

申请号：US425616

申请日：1995-04-20

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。