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31. 发明授权

US06606424B2 Apparatus and method for optical modulation and demodulation 有权
标题翻译：光调制解调装置及方法
公开(公告)号：US06606424B2
公开(公告)日：2003-08-12
申请号：US09516588
申请日：2000-03-01
申请人： Hiroki Ooi , Minoru Seino , George Ishikawa
发明人： Hiroki Ooi , Minoru Seino , George Ishikawa
IPC分类号： G02F1035
CPC分类号： G02F1/0356 , G02F1/2255
摘要： In the case in which independent driving voltages are applied to electrodes that are provided in waveguides #1 and #2 of a Mach-Zehnder optical modulator, light passing through the waveguide #1 and light passing through the waveguide #2 undergo the same amount of phase modulation of opposite signs (positive and negative) while a driving voltage E1 is applied. Similarly, the Mach-Zehnder optical modulator is configured so that when a driving voltage E2 is applied, phase modulation provided to the light passing through the waveguide #1 and phase modulation provided to the light passing through the waveguide #2 are offset after these lights are coupled. With this configuration, the amount of phase modulation provided by the Mach-Zehnder optical modulator is always kept at “0”, resulting in that chirping, which is defined as the differentiation of a phase modulation amount with respect to time, does not occur. Therefore, deterioration caused by chirping in a waveform can be prevented.
摘要翻译：在马赫 - 策德尔光调制器的波导＃1和＃2中设置的电极上施加独立的驱动电压的情况下，通过波导＃1的光和穿过波导＃2的光经受相同量的同时施加驱动电压E1时的相反符号（正和负）的相位调制。类似地，马赫曾德尔光调制器被配置为使得当施加驱动电压E2时，提供给通过波导＃1的光的相位调制和提供给穿过波导＃2的光的相位调制在这些光之后被偏移被耦合。利用这种配置，由Mach-Zehnder光调制器提供的相位调制量总是保持在“0”，从而不会发生定义为相位调制量相对于时间的微分的啁啾。因此，可以防止由波形中的啁啾引起的劣化。

32. 发明授权

US06411416B1 Method and apparatus for minimizing the intensity of a specific frequency component of an optical signal travelling through an optical fiber transmission line to thereby minimize the total dispersion 失效
标题翻译：用于最小化穿过光纤传输线的光信号的特定频率分量的强度从而使总色散最小化的方法和装置
公开(公告)号：US06411416B1
公开(公告)日：2002-06-25
申请号：US09044130
申请日：1998-03-19
申请人： Hiroki Ooi , George Ishikawa
发明人： Hiroki Ooi , George Ishikawa
IPC分类号： H04B1018
CPC分类号： H04B10/2519 , H04B2210/252 , H04B2210/254
摘要： A method and apparatus for minimizing the intensity of a specific frequency component of an optical signal travelling through an optical fiber transmission line, to thereby minimize the total dispersion in the transmission line. More specifically, the intensity of a specific frequency component of an optical signal transmitted through the transmission line is detected. The optical signal has an intensity v. total dispersion characteristic curve with a corresponding eye opening. The total dispersion is controlled to minimize the intensity of the specific frequency component in the eye opening, thereby minimizing the total dispersion.
摘要翻译：一种用于最小化通过光纤传输线行进的光信号的特定频率分量的强度的方法和装置，从而使传输线中的总色散最小化。更具体地，检测通过传输线传输的光信号的特定频率分量的强度。光信号具有对应的眼睛开口的强度v总色散特性曲线。控制总色散以最小化眼睛开口中特定频率分量的强度，从而使总色散最小化。

33. 发明授权

US5760937A Optical demultiplexer 失效
标题翻译：光解复用器
公开(公告)号：US5760937A
公开(公告)日：1998-06-02
申请号：US784441
申请日：1997-01-16
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
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： An optical demultiplexer comprises a clock regenerating circuit for regenerating a clock signal for each optical signal channel from an optical multiplexed signal. An optical switch separates each optical signal channel from the optical multiplexed signal in accordance with the clock signal regenerated by the clock regenerating circuit. An identification information extraction circuit extracts identification information contained in each optical signal channel separated by the optical switch. A control circuit changes output destinations so that each optical signal channel is output to a designated destination in accordance with the identification information extracted by the identification information extraction circuit. The identification information is appended as identification data to a data signal represented by the optical signal, and the identification information extraction circuit extracts the identification data contained in the data signal reconstructed from each optical signal channel. A signal switching circuit is provided between outputs of the optical switch and output destinations, wherein the control circuit changes output destinations by changing connection relationships in the signal switching circuit between the outputs of the optical switch and the output destinations, for example, by changing the phase of the clock signal supplied to the optical switch.
摘要翻译：光解复用器包括时钟再生电路，用于从光复用信号再生每个光信号通道的时钟信号。根据由时钟再生电路再生的时钟信号，光开关将光信号通道与光复用信号分开。识别信息提取电路提取由光开关分离的每个光信号通道中包含的识别信息。控制电路改变输出目的地，使得根据由识别信息提取电路提取的识别信息将每个光信号信道输出到指定的目的地。识别信息作为识别数据附加到由光信号表示的数据信号，并且识别信息提取电路提取包含在从每个光信号信道重建的数据信号中的识别数据。信号切换电路设置在光开关和输出目的地的输出之间，其中控制电路通过改变光开关输出与输出目的地之间的信号切换电路中的连接关系来改变输出目的地，例如通过改变提供给光开关的时钟信号的相位。

34. 发明授权

US07885545B2 Dispersion compensation method and compensation node 有权
标题翻译：色散补偿方法和补偿节点
公开(公告)号：US07885545B2
公开(公告)日：2011-02-08
申请号：US10971735
申请日：2004-10-25
申请人： Hiroki Ooi , Akira Miura , Kentaro Nakamura , George Ishikawa
发明人： Hiroki Ooi , Akira Miura , Kentaro Nakamura , George Ishikawa
IPC分类号： H04J14/02 , H04B10/12
CPC分类号： H04B10/25133
摘要： 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.
摘要翻译：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。

35. 发明申请

US20090238571A1 OPTICAL TRANSMISSION SYSTEM AND METHOD FOR CHROMATIC DISPERSION COMPENSATION 有权
标题翻译：用于色散补偿的光传输系统和方法
公开(公告)号：US20090238571A1
公开(公告)日：2009-09-24
申请号：US12405582
申请日：2009-03-17
申请人： Kentaro NAKAMURA , Hiroki OOI , George Ishikawa
发明人： Kentaro NAKAMURA , Hiroki OOI , George Ishikawa
IPC分类号： H04J14/02
CPC分类号： H04B10/25133 , H04B10/07951 , H04J14/021 , H04J14/0227 , H04J14/0246 , H04J14/0256 , H04J14/026 , H04J14/0279
摘要： An optical transmission system including an optical transmission path for transmitting WDM signals multiplexed different wavelength optical signals, the WDM signals including different bit rate optical signals or different modulation format optical signals; a repeater arranged in the optical transmission path, the repeater including a chromatic dispersion compensation unit for compensating chromatic dispersion compensation for the WDM signals; and a network management system including processes of determining a dispersion compensation ratio indicating the ratio with respect to the dispersion compensation amount at which the residual dispersion of the WDM signals are zero after transmission via the optical transmission path, on the bases of the mixture ratio of different optical signals included in the WDM signals, and variably setting the dispersion compensation amount for the in-line repeater according to the dispersion compensation ratio.
摘要翻译：一种光传输系统，包括用于传输复用的不同波长光信号的WDM信号的光传输路径，所述WDM信号包括不同的比特率光信号或不同调制格式的光信号; 布置在所述光传输路径中的中继器，所述中继器包括用于补偿所述WDM信号的色散补偿的色散补偿单元; 以及网络管理系统，其包括以下步骤的处理：基于所述混合比率，确定相对于所述WDM信号的残留色散为零的色散补偿量的比率的色散补偿比，包括在WDM信号中的不同的光信号，并且根据色散补偿比可变地设置用于同时中继器的色散补偿量。

36. 发明授权

US07433599B2 Automatic dispersion compensation device and compensation method 失效
标题翻译：自动色散补偿装置及补偿方法
公开(公告)号：US07433599B2
公开(公告)日：2008-10-07
申请号：US10446694
申请日：2003-05-29
申请人： Tomoo Takahara , Hiroki Ooi , George Ishikawa
发明人： Tomoo Takahara , Hiroki Ooi , George Ishikawa
IPC分类号： H04J14/02
CPC分类号： H04B10/25133 , H04B10/2572
摘要： The automatic dispersion compensation device of the present invention comprises a unit measuring the transmission quality of incoming optical signals for one or more channels input from a transmission line and a unit separating and detecting the transmission quality degradation due to chromatic dispersion, in the measurement result of the unit from degradation due to other factors and controlling a variable chromatic dispersion compensator (VDC) in such a way as to compensate for that degradation.
摘要翻译：本发明的自动色散补偿装置包括测量从传输线输入的一个或多个信道的输入光信号的传输质量的单元和在色散的测量结果中分离和检测由于色散导致的传输质量劣化的单元该单元由于其它因素而劣化并且以这样的方式控制可变色散补偿器（VDC），以补偿该劣化。

37. 发明授权

US07389049B2 Chromatic dispersion compensation controlling system 失效
标题翻译：色散补偿控制系统
公开(公告)号：US07389049B2
公开(公告)日：2008-06-17
申请号：US10784989
申请日：2004-02-25
申请人： Tomoo Takahara , Hiroki Ooi , George Ishikawa
发明人： Tomoo Takahara , Hiroki Ooi , George Ishikawa
IPC分类号： H04J14/02
CPC分类号： H04B10/2513
摘要： The dispersion monitoring device of the present invention detects a change in dispersion caused in a system by performing the decision process of a received signal using a data flip-flop in which required decision phase and decision threshold are set, averaging the output signal of the data flip-flop using an integration circuit and determining a received waveform, based on a change in a level of an output signal from the integration circuit. In another preferred embodiment, a signal is inputted to a chromatic dispersion change sign monitor. If a chirping parameter is correctly set, residual chromatic dispersion shifts in the negative direction when the peak value of a received signal is large, and it shifts in the positive direction when the peak value of a received signal is small. Using this fact, optimum dispersion compensation is conducted.
摘要翻译：本发明的色散监视装置通过使用其中设置了所需判定相位和判定阈值的数据触发器执行接收信号的判定处理来检测系统中引起的色散变化，对数据的输出信号进行平均基于来自积分电路的输出信号的电平的变化，使用积分电路的触发器和确定接收的波形。在另一个优选实施例中，信号被输入到色散改变符号监视器。如果正确设定了啁啾参数，则当接收信号的峰值较大时，残留色散沿负方向偏移，并且当接收信号的峰值较小时，其向正方向偏移。使用这个事实，进行最佳色散补偿。

38. 发明申请

US20070212079A1 Optical transmission apparatus 有权
标题翻译：光传输装置
公开(公告)号：US20070212079A1
公开(公告)日：2007-09-13
申请号：US11606390
申请日：2006-11-30
申请人： Hiroki Ooi , George Ishikawa , Daisuke Tanimura , Hirotoshi Kodaka
发明人： Hiroki Ooi , George Ishikawa , Daisuke Tanimura , Hirotoshi Kodaka
IPC分类号： H04B10/04
CPC分类号： H04B10/5051 , H04B10/505 , H04B10/5053
摘要： An optical transmission apparatus according to the present invention comprises: a plurality of optical modulating sections serially connected to each other via optical fibers; driving sections corresponding to the optical modulating sections; delay amount varying sections that provide variable delay amounts for modulating signals to be input to the driving sections, to adjust timing between drive signals to be provided for the optical modulating sections; temperature monitoring sections that monitor the temperature of each of the optical fibers and the like; and a delay amount control section that controls the delay amount in each of the delay amount varying sections based on the monitored temperatures.
摘要翻译：根据本发明的光传输装置包括：通过光纤串联连接的多个光调制部分; 对应于光调制部分的驱动部分; 延迟量变化部分，其提供用于调制要被输入到驱动部分的信号的可变延迟量，以调整要为光调制部分提供的驱动信号之间的定时; 温度监视部分，其监测每个光纤等的温度; 以及延迟量控制部分，其基于所监视的温度来控制每个延迟量变化部分中的延迟量。

39. 发明授权

US07030973B2 Polarization mode dispersion compensator based on degree of polarization 有权
标题翻译：基于极化度的极化模式色散补偿器
公开(公告)号：US07030973B2
公开(公告)日：2006-04-18
申请号：US10736514
申请日：2003-12-17
申请人： Jens C. Rasmussen , George Ishikawa , Takafumi Terahara , Hiroki Ooi
发明人： Jens C. Rasmussen , George Ishikawa , Takafumi Terahara , Hiroki Ooi
IPC分类号： G01N21/00
CPC分类号： G01J4/00 , G01J4/04 , H04B10/2569
摘要： The degree of polarization of an optical signal is measured by a polarimeter and used for providing a feedback signal to adjust adaptive optics of a polarization mode dispersion compensator. The polarization properties of the polarimeter are determined with high accuracy to match the polarimeter through calibration and used to produce the feedback signal.
摘要翻译：光信号的偏振度由偏振计测量，用于提供反馈信号以调整偏振模色散补偿器的自适应光学元件。以高精度确定偏光仪的偏振特性，以通过校准匹配偏光计，并用于产生反馈信号。

40. 发明授权

US07006770B2 Optical receiving station, optical communication system, and dispersion controlling method 失效
公开(公告)号：US07006770B2
公开(公告)日：2006-02-28
申请号：US09790695
申请日：2001-02-23
申请人： Yuichi Akiyama , Hiroki Ooi , George Ishikawa
发明人： Yuichi Akiyama , Hiroki Ooi , George Ishikawa
IPC分类号： H04B10/18
CPC分类号： H04B10/25133 , H04B10/25137 , H04B10/66 , H04B2210/252
摘要： The invention relates to an optical receiving station, an optical communication system, and a dispersion controlling method for precisely controlling chromatic dispersion in an optical transmission line or chromatic dispersion in an optical transmission line that varies with time. An optical receiving station is provided with a dispersion compensating section for receiving, via an optical transmission line, an optical signal modulated according to an optical duo-binary modulation method and for changing a dispersion value to be used for compensating for chromatic dispersion in an optical transmission line, an intensity detecting section for detecting the intensity of a specific frequency component of the optical signal output from the dispersion compensating section, and a controlling section for adjusting the dispersion value of the dispersion compensating section so that the output of the intensity detecting section has a predetermined extreme value.

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