公开(公告)号：US5870213A

公开(公告)日：1999-02-09

申请号：US10519

申请日：1998-01-21

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

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

IPC: 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

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US5805321A

公开(公告)日：1998-09-08

申请号：US712375

申请日：1996-09-11

Applicant: Hiroki Ooi ,  George Ishikawa ,  Hiroshi Nishimoto

Inventor： Hiroki Ooi ,  George Ishikawa ,  Hiroshi Nishimoto

IPC: G02F1/03 ,  G02F1/01 ,  G02F1/225 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/2513 ,  H04B10/516 ,  H04B10/524 ,  H04B10/54 ,  H04B10/556 ,  H04B10/564 ,  H04B10/58 ,  H04B10/61 ,  H04J14/02 ,  H04J14/08

CPC classification number: G02F1/0123 ,  G02F1/225 ,  G02F2203/25 ,  H04J14/02 ,  H04J14/08

Abstract: A control unit for controlling an optically modulating apparatus in an optical transmitter, including plural optical modulators producing an optical output signal consisting of a series of optical pulses for transmitting data under OTDM or WDM, so that pre-chirping magnitudes of the modulators are changed together with drift compensation, for preventing waveform deterioration due to an optical transmission line from occurring. The pre-chirping magnitudes are changed by shifting operating points of modulators only concerning pre-chirping, without affecting other transmitting characteristics of the optical output signal.

Abstract translation: 一种用于控制光发射机中的光调制装置的控制单元，包括产生由用于在OTDM或WDM下传输数据的一系列光脉冲组成的光输出信号的多个光调制器，使得调制器的预啁啾幅度一起改变 具有漂移补偿，用于防止由于光传输线引起的波形恶化。 预啁啾幅度通过仅调制调制器的操作点而改变，而不影响光输出信号的其他发送特性。

公开(公告)号：US08625996B2

公开(公告)日：2014-01-07

申请号：US11939646

申请日：2007-11-14

Applicant: Toshiki Tanaka ,  Hisao Nakashima ,  Takeshi Hoshida ,  Toru Katagiri ,  Hiroki Ooi ,  Akira Miura

Inventor： Toshiki Tanaka ,  Hisao Nakashima ,  Takeshi Hoshida ,  Toru Katagiri ,  Hiroki Ooi ,  Akira Miura

IPC: H04B10/00

CPC classification number: H04J14/0286 ,  H04B10/2557 ,  H04B10/516 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0283

Abstract: An optical transmitter is provided for transmitting a wavelength multiplexed signal comprising an intensity modulation optical signal and a phase modulation optical signal through a transmission line. The optical transmitter includes a bit time difference given signal generator for generating at least two optical signals having a bit time difference therebetween, from the wavelength multiplexed signal. The optical transmitter further includes a wavelength multiplexed signal output unit to which at least two optical signals are input from the bit time difference given signal generator, and which generates and outputs a wavelength multiplexed signal in which the bit time difference was given between the phase modulation optical signal and the phase modulation optical signal.

Abstract translation: 提供了一种用于通过传输线传输包括强度调制光信号和相位调制光信号的波分复用信号的光发射机。 所述光发射机包括位时间差给定信号发生器，用于从所述波长复用信号产生具有位时间差的至少两个光信号。 光发射机还包括波长多路复用信号输出单元，至少两个光信号从比特时间差给定信号发生器输入到该波长多路复用信号输出单元，并且其生成并输出波长多路复用信号，其中在强度调制 光信号和相位调制光信号。

公开(公告)号：US08306430B2

公开(公告)日：2012-11-06

申请号：US12292956

申请日：2008-12-01

Applicant: Akira Miura ,  Hiroki Ooi ,  Kiyotoshi Noheji

Inventor： Akira Miura ,  Hiroki Ooi ,  Kiyotoshi Noheji

IPC: H04B10/00

CPC classification number: G02B6/29394 ,  G02B6/29358

Abstract: In a dispersion compensating apparatus, a reference identifying unit identifies a reference (X dB down) that makes a penalty lower than a predetermined value in accordance with optical signal information and a reference identifying table, and a VIPA plate temperature adjusting unit adjusts a refractive index of a VIPA plate by modifying a temperature of the VIPA plate so that a transmission center wavelength derived from the reference matches the wavelength defined by an ITU-T Grid. If a dispersion compensation value setting unit performs an optimal residual dispersion value search, the VIPA plate temperature adjusting unit determines if a filtering penalty is lower than a predetermined value in accordance with a penalty management table. If the filtering penalty is lower than the predetermined value, temperature adjustment of the VIPA plate is not performed.

Abstract translation: 在色散补偿装置中，基准识别单元根据光信号信息和基准识别表来识别使罚分低于预定值的参考（X dB down），VIPA板温度调节单元调节折射率 的VIPA板，通过改变VIPA板的温度，使得从基准导出的透射中心波长与ITU-T网格定义的波长匹配。 如果色散补偿值设定单元执行最佳残余色散值搜索，则VIPA板温度调节单元根据惩罚管理表确定过滤罚分是否低于预定值。 如果过滤罚分低于预定值，则不执行VIPA板的温度调节。

公开(公告)号：US20120082465A1

公开(公告)日：2012-04-05

申请号：US12879820

申请日：2010-09-10

Applicant: Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Yutaka Kai ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

Inventor： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Yutaka Kai ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

IPC: H04B10/06 ,  H04B10/00

CPC classification number: G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/5561 ,  H04B10/66 ,  H04B10/677

Abstract: A phase shift unit provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.

Abstract translation: 相移单元在经由构成数据调制单元的一对臂发送的一对光信号之间提供规定的相位差（＆pgr / / 2）。 低频信号f0叠加在一个光信号上。 将相位从低频信号f0移位了＆pgr / / 2的信号叠加在另一个光信号上。 一对光信号被耦合，其一部分由光电二极管转换成电信号。 提取包含在电信号中的2f0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f0分量成为最小值。

公开(公告)号：US07933519B2

公开(公告)日：2011-04-26

申请号：US11984534

申请日：2007-11-19

Applicant: Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi

Inventor： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi

IPC: H04J14/00

CPC classification number: H04Q11/0005 ,  G02B6/3512 ,  G02B6/3542 ,  G02B6/356 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/003 ,  H04Q2011/0052

Abstract: An optimally-sized optical cross-connect that switches optical signal paths with a minimum number of wavelength selective switches and their interconnections. To switch optical signals of N routes (N=1, 2, . . . ), an optical cross-connect includes a 2×N (2-input, N-output) wavelength selective switch for each of N input routes and a N×2 (N-input, 2-output) wavelength selective switch for each of N output routes. One input port of each 2×N wavelength selective switch receives an optical signal from a corresponding input route, while the other input port of the same receives an optical add signal from a corresponding add route. One output port of each N×2 wavelength selective switch outputs an optical signal to a corresponding output route, while the other output port outputs an optical drop signal to a corresponding drop route.

Abstract translation: 最小尺寸的光交叉连接，可以用最少数量的波长选择开关及其互连来切换光信号路径。 为了切换N个路由（N = 1,2，...）的光信号，光交叉连接包括N个输入路由中的每一个的2×N（2输入，N输出）波长选择开关，N ×2（N输入，2输出）波长选择开关。 每个2×N波长选择开关的一个输入端口从相应的输入路由接收光信号，而其它输入端口从相应的添加路由接收光信号。 每个N×2波长选择开关的一个输出端口将光信号输出到相应的输出路径，而另一个输出端口将光信号输出到相应的丢弃路由。

公开(公告)号：US20110058820A1

公开(公告)日：2011-03-10

申请号：US12923080

申请日：2010-08-31

Applicant: Hiroki Ooi

Inventor： Hiroki Ooi

IPC: H04B10/12

CPC classification number: H04B10/2513 ,  H04B2210/003 ,  H04B2210/258

Abstract: An optical transmission system includes an optical transmission equipment and an optical receiving device. The optical transmission equipment transmits an optical signal from a first adjacent node to a second adjacent node, and includes an optical multiplexing and demultiplexing unit that demultiplexes the optical signal from the first adjacent node into an optical transmission signal to be transmitted to the second adjacent node and an optical demultiplexed signal, and a compensating unit that partially compensates chromatic dispersion in the optical demultiplexed signal. The optical receiving device receives the optical signal from the optical transmission equipment, and includes a converting unit that converts the optical demultiplexed signal the chromatic dispersion of which is partially compensated by the compensating unit into an electric digital signal, and a digital processing unit that compensates chromatic dispersion remaining in the electric digital signal.

Abstract translation: 光传输系统包括光传输设备和光接收设备。 光传输设备将光信号从第一相邻节点发射到第二相邻节点，并且包括光复用和解复用单元，其将来自第一相邻节点的光信号解复用为要传输到第二相邻节点的光传输信号 以及光解复用信号，以及补偿单元，其部分地补偿光解复用信号中的色散。 光接收装置接收来自光传输设备的光信号，并且包括转换单元，其将其色散部分被补偿单元补偿的光解复用信号转换为电数字信号，以及数字处理单元， 剩余在电数字信号中的色散。

公开(公告)号：US20110038636A1

公开(公告)日：2011-02-17

申请号：US12910497

申请日：2010-10-22

Applicant: Yuichi AKIYAMA ,  Takafumi TERAHARA ,  Hiroki OOI ,  Jens C. RASMUSSEN ,  Akira MIURA ,  Akihiko ISOMURA

Inventor： Yuichi AKIYAMA ,  Takafumi TERAHARA ,  Hiroki OOI ,  Jens C. RASMUSSEN ,  Akira MIURA ,  Akihiko ISOMURA

IPC: H04J14/02

CPC classification number: H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/0075 ,  H04Q2011/0083

Abstract: An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one input port receiving the outputted optical signal from the first optical coupler and a plurality of output ports, demultiplexing a plurality of arbitrarily selected multiplexed wavelengths from the received optical signal, a second wavelength selective switch, having a plurality of input ports, each input port receiving a different optical signal and one output port, multiplexing a plurality of arbitrarily selected wavelength signals on the plurality of input ports, and a second optical coupler receiving the optical signal output from the wavelength blocker and multiplexed wavelength signal from the second wavelength selective switch.

Abstract translation: 光分插复用器包括接收包括多个复用波长的光信号的第一光耦合器，接收来自第一光耦合器的光信号的波长阻挡器，以及阻挡多个复用波长的至少一个波长;第一 波长选择开关，具有从所述第一光耦合器接收输出的光信号的一个输入端口和多个输出端口，从所接收的光信号中解复用多个任意选择的复用波长;第二波长选择开关，具有多个输入 端口，每个输入端口接收不同的光信号和一个输出端口，在多个输入端口上复用多个任意选择的波长信号，以及接收从波长阻挡器输出的光信号的第二光耦合器和来自 第二波长选择开关。

公开(公告)号：US07885545B2

公开(公告)日：2011-02-08

申请号：US10971735

申请日：2004-10-25

Applicant: Hiroki Ooi ,  Akira Miura ,  Kentaro Nakamura ,  George Ishikawa

Inventor： Hiroki Ooi ,  Akira Miura ,  Kentaro Nakamura ,  George Ishikawa

IPC: H04J14/02 ,  H04B10/12

CPC classification number: H04B10/25133

Abstract: A dispersion compensation method comprising the steps of: a) providing a compensation node for each predetermined number of in-line repeaters; b) carrying out dispersion compensation for the in-line repeaters with the different bit rates in common; c) carrying out wavelength demultiplexing on the optical signal for each of the different bit rates in the compensation node; and d) setting an optimum dispersion compensation amount for the optical signal of each bit rate.

Abstract translation: 一种色散补偿方法，包括以下步骤：a）为每个预定数量的串联中继器提供补偿节点; b）以不同比特率共同对串联中继器进行色散补偿; c）对补偿节点中的每个不同比特率的光信号执行波长解复用; 以及d）为每个比特率的光信号设置最佳色散补偿量。

公开(公告)号：US07848659B2

公开(公告)日：2010-12-07

申请号：US11298892

申请日：2005-12-12

Applicant: Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

Inventor： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

IPC: H04B10/04

CPC classification number: G02F1/0123 ,  G02F1/2255 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50597 ,  H04B10/58

Abstract: A data modulator unit generates a DQPSK optical signal in accordance with a data signal. A phase shift unit provides a phase difference of π/2 between a pair of arms. A photodetector converts an output signal of the data modulator unit into an electrical signal. A filter is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector. A monitor unit detects power of an output signal of the filter. A phase difference control unit adjusts the amount of phase shift in the phase shift unit so as to minimize power of an output signal of the filter.

Abstract translation: 数据调制器单元根据数据信号产生DQPSK光信号。 相移单元在一对臂之间提供＆pgr / / 2的相位差。 光电检测器将数据调制器单元的输出信号转换为电信号。 滤波器是具有低于符号频率的截止频率的低通滤波器，并对光电检测器的输出信号进行滤波。 监视器单元检测滤波器的输出信号的功率。 相位差控制单元调整相移单元中的相移量，以使滤波器的输出信号的功率最小化。