公开(公告)号：US20050175041A1

公开(公告)日：2005-08-11

申请号：US10888016

申请日：2004-07-12

申请人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

发明人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0216 ,  H04J14/0212 ,  H04J14/0217

摘要： A problem to be solved in an optical communication system for carrying out bidirectional transmission between communication nodes by wavelength-division-multiplexed optical signals is that a plurality of optical add-drop multiplexers installed in the communication nodes are required for each transmission direction, and therefore, the communication cost is increased. An optical circulator or an optical coupler is arranged at an input/output port of the optical add-drop multiplexer and the wavelength-division-multiplexed optical signals are assembled for each transmission direction, whereby optical signals transmitted bidirectionally can be handled by one optical add-drop multiplexer.

摘要翻译： 用于通过波分复用光信号在通信节点之间进行双向传输的光通信系统中要解决的问题在于，每个传输方向都需要安装在通信节点中的多个光分插复用器，因此 通信成本增加。 在光分插复用器的输入/输出端口处设置光环行器或光耦合器，并且为每个传输方向组合波分复用光信号，由此双向传输的光信号可以通过一个光学加法 - 多路复用器

公开(公告)号：US20090092401A1

公开(公告)日：2009-04-09

申请号：US12222574

申请日：2008-08-12

申请人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/12 ,  H04B10/04

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/5053 ,  H04B10/50577 ,  H04B10/50595 ,  H04L27/2071 ,  H04L27/2096

摘要： In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.

摘要翻译： 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在实现第二控制器之后被实现。

公开(公告)号：US20050226621A1

公开(公告)日：2005-10-13

申请号：US10913432

申请日：2004-08-09

申请人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

发明人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

IPC分类号： H04J14/00 ,  G02B6/00 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04J14/02

CPC分类号： H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0227

摘要： It was difficult to detect a wavelength error. Further, a wavelength error of an optical add signal is accompanied by a calculation error of the number of wavelengths of a wavelength division multiplexing signal, which causes a set value of an optical signal level to become abnormal, resulting in the degradation of the optical signal. According to the present invention, part of an inputted optical add signal 118 is reflected by a mirror 117, and is thereby inputted into an optical wavelength multiplexer 105 in the reverse direction so that the optical add signal is returned to paths 115-1 through 115-16 corresponding to wavelengths λ1 through λ16. If the returned optical add signal is an optical add signal having a correct wavelength (in FIG. 1, λ16), the optical signal enters its corresponding backward direction optical detector 113-16. Accordingly, it is possible to check whether or not a wavelength of the optical add signal is correct.

摘要翻译： 很难检测出波长误差。 此外，光添加信号的波长误差伴随着波分复用信号的波长数的计算误差，导致光信号电平的设定值变得异常，导致光信号的劣化 。 根据本发明，输入的光学加法信号118的一部分由反射镜117反射，从而以相反的方向输入到光学波长多路复用器105中，使得光学加法信号返回到路径115-1到115 16对应于波长λ1到λ16。 如果返回的光学加法信号是具有正确波长的光学加法信号（在图1中，λ16），则光信号进入其对应的反向光学检测器113-16。 因此，可以检查光学加法信号的波长是否正确。

公开(公告)号：US08095018B2

公开(公告)日：2012-01-10

申请号：US12222574

申请日：2008-08-12

申请人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/00 ,  H04B10/04 ,  H04J14/00

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/5053 ,  H04B10/50577 ,  H04B10/50595 ,  H04L27/2071 ,  H04L27/2096

摘要： In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.

摘要翻译： 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在第二控制器被实现之后被实现。

公开(公告)号：US07903975B2

公开(公告)日：2011-03-08

申请号：US10888016

申请日：2004-07-12

申请人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

发明人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

IPC分类号： H04J14/02

CPC分类号： H04J14/0216 ,  H04J14/0212 ,  H04J14/0217

摘要： A problem to be solved in an optical communication system for carrying out bidirectional transmission between communication nodes by wavelength-division-multiplexed optical signals is that a plurality of optical add-drop multiplexers installed in the communication nodes are required for each transmission direction, and therefore, the communication cost is increased. An optical circulator or an optical coupler is arranged at an input/output port of the optical add-drop multiplexer and the wavelength-division-multiplexed optical signals are assembled for each transmission direction, whereby optical signals transmitted bidirectionally can be handled by one optical add-drop multiplexer.

摘要翻译： 用于通过波分复用光信号在通信节点之间进行双向传输的光通信系统中要解决的问题在于，每个传输方向都需要安装在通信节点中的多个光分插复用器，因此 通信成本增加。 在光分插复用器的输入/输出端口处设置光环行器或光耦合器，并且为每个传输方向组合波分复用光信号，由此双向传输的光信号可以通过一个光学加法 - 多路复用器

公开(公告)号：US07653311B2

公开(公告)日：2010-01-26

申请号：US10913432

申请日：2004-08-09

申请人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

发明人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

IPC分类号： H04J14/02

CPC分类号： H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0227

摘要： Part of an inputted optical add signal 118 is reflected by a mirror 117, and is thereby inputted into an optical wavelength multiplexer 105 in the reverse direction so that the optical add signal is returned to paths 115-1 through 115-16 corresponding to wavelengths λ1 through λ16. If the returned optical add signal is an optical add signal having a correct wavelength, the optical signal enters its corresponding backward direction optical detector 113-16. Accordingly, it is possible to check whether or not a wavelength of the optical add signal is correct.

摘要翻译： 输入的光学加法信号118的一部分由反射镜117反射，从而以相反方向输入到光学波长多路复用器105中，使得光学加法信号返回到对应于波长λ1的路径115-1至115-16 通过lambda16。 如果返回的光学加法信号是具有正确波长的光学加法信号，则光信号进入其对应的反向光学检测器113-16。 因此，可以检查光学加法信号的波长是否正确。

公开(公告)号：US08090269B2

公开(公告)日：2012-01-03

申请号：US12007846

申请日：2008-01-16

申请人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

发明人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

IPC分类号： H04B10/04

CPC分类号： H04B10/5561 ,  H04B10/5055 ,  H04B10/677

摘要： A data transmission system comprising a transmitter and a receiver. The transmitter comprises a phase encoder for partitioning consecutive bit data to be input in data in units of X bits; and converting a 2x value indicated by the data of X bits in unique association with an (N/2−1)Y value of a Y symbol, and for confining use of signal points, from among the signal points of N-ary phase, only to a signal point P1 (at a phase angle 0) and N/2−2 signal points P(2n+2) (where 1≦n

摘要翻译： 一种包括发射机和接收机的数据传输系统。 发射机包括相位编码器，用于分割以X位为单位输入数据的连续位数据; 并且将由X位的数据指示的2x值与Y符号的（N / 2-1）Y值唯一相关联，并且为了限制使用信号点，从N阶相位的信号点中， 只有信号点P1（相位角0）和N / 2-2信号点P（2n + 2）（其中1＆nlE; n

公开(公告)号：US20080240729A1

公开(公告)日：2008-10-02

申请号：US12007846

申请日：2008-01-16

申请人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

发明人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

IPC分类号： H04B10/00

CPC分类号： H04B10/5561 ,  H04B10/5055 ,  H04B10/677

摘要： A data transmission system comprising a transmitter and a receiver. The transmitter comprises a phase encoder for partitioning consecutive bit data to be input in data in units of X bits; and converting a 2x value indicated by the data of X bits in unique association with an (N/2-1)Y value of a Y symbol, and for confining use of signal points, from among the signal points of N-ary phase, only to a signal point P1 (at a phase angle 0) and N/2-2 signal points P(2n+2) (where 1≦n

摘要翻译： 一种数据传输系统，包括发射机和接收机。 发射机包括相位编码器，用于分割以X位为单位输入数据的连续位数据; 并且将由X位的数据指示的2×SUP值转换为与Y符号的（N / 2-1）“Y”值唯一关联，并限制使用 的信号点从N相相位的信号点仅到信号点P 1（相位角0）和N / 2-2信号点P（2n + 2）（其中1 <= n < N / 2-2）。 接收机包括相位解码器，用于当接收到不同于允许使用的信号点的信号点时通知错误检测，并且通过将信号点改变为具有较小汉明距离的信号点来进行纠错。

公开(公告)号：US20110229153A1

公开(公告)日：2011-09-22

申请号：US13121341

申请日：2009-10-05

申请人： Kenro Sekine

发明人： Kenro Sekine

IPC分类号： H04B10/18 ,  H04B10/06

CPC分类号： H04B10/672 ,  H04B10/25133 ,  H04B2210/252

摘要： In an optical receiver of a long-haul high-speed WDM/OADM system, a control technique is provided that can accurately control a variable dispersion compensator with an inexpensive configuration even under strict SNR conditions. Signal reception characteristic data (a bit error rate, a clock extraction result, and a frame synchronization result) is obtained and an optimum dispersion compensation amount of the dispersion compensator is calculated. The signal reception characteristic data is saturated by a high SNR. In the case where desired dispersion control accuracy cannot be obtained, an input level of a photodiode is reduced by controlling an output level of an amplifier or a variable optical attenuator. Further, in a state in which a received SNR is deteriorated, the signal reception characteristic data is obtained and the optimum dispersion compensation amount of the dispersion compensator is calculated again.

摘要翻译： 在长距离高速WDM / OADM系统的光接收机中，提供了即使在严格的SNR条件下也能以廉价的配置精确地控制可变色散补偿器的控制技术。 获得信号接收特性数据（误码率，时钟提取结果和帧同步结果），并计算色散补偿器的最佳色散补偿量。 信号接收特性数据被高SNR饱和。 在不能获得期望的色散控制精度的情况下，通过控制放大器或可变光衰减器的输出电平来降低光电二极管的输入电平。 此外，在接收到的SNR恶化的状态下，获得信号接收特性数据，并且再次计算色散补偿器的最佳色散补偿量。

公开(公告)号：US07526199B2

公开(公告)日：2009-04-28

申请号：US11184996

申请日：2005-07-20

申请人： Kenro Sekine ,  Junya Kosaka ,  Tadashi Matsuoka

发明人： Kenro Sekine ,  Junya Kosaka ,  Tadashi Matsuoka

IPC分类号： H04B10/00 ,  H04B10/02 ,  H04B10/08 ,  H04J14/02

CPC分类号： H04J14/0289 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

摘要： An optical transmission apparatus includes a demultiplexer for separating wavelength-division multiplexing light received from a first optical transmission line into signals of different wavelengths to transmit the signals to an outside and a multiplexer for multiplexing signals of different wavelengths received from the outside to transmit multiplexed signals to a second optical transmission line. An input check unit is provided for monitoring a power level of a signal separated by the demultiplexer and for providing an output indicative thereof. An output adjuster is provided for intercepting a signal from the outside so as to inhibit receipt of the signal from the outside by the multiplexer depending on the output of the input check unit.

摘要翻译： 一种光传输装置，包括：解复用器，用于将从第一光传输线接收的波分复用光分离成不同波长的信号以将信号发送到外部;多路复用器，用于复用从外部接收的不同波长的信号，以发送多路复用信号 到第二光传输线。 提供输入检查单元，用于监视由解复用器分离的信号的功率电平并提供指示其的输出。 提供输出调节器，用于截取来自外部的信号，以便根据输入检查单元的输出，禁止多路复用器从外部接收信号。