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51. 发明申请

US20060245763A1 Optical transmitter 失效
标题翻译：光发射机
公开(公告)号：US20060245763A1
公开(公告)日：2006-11-02
申请号：US10562147
申请日：2003-08-27
申请人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
发明人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/508 , H04B10/5162 , H04B10/5561
摘要： A differential encoder generates a differentially encoded signal based on a data signal. An RZ (return to zero) encoder generates an electric RZ differential signal as an RZ signal in an electric area based on the differentially encoded signal. A Mach-Zehnder interferometer type intensity modulator generates an optical RZ-DSPK (differential phase shift keying) signal as an RZ signal in an optical area based on the electric RZ differential signal.
摘要翻译：差分编码器基于数据信号产生差分编码信号。 RZ（返回零）编码器基于差分编码信号在电区域中产生作为RZ信号的电RZ差分信号。马赫曾德干涉仪型强度调制器基于电RZ差分信号在光学区域中产生作为RZ信号的光学RZ-DSPK（差分相移键控）信号。

52. 发明授权

US07110681B1 Method and apparatus for optical transmission 有权
标题翻译：光传输方法及装置
公开(公告)号：US07110681B1
公开(公告)日：2006-09-19
申请号：US10129971
申请日：2000-10-13
申请人： Takashi Mizuochi
发明人： Takashi Mizuochi
IPC分类号： H04B10/04
CPC分类号： H04L25/4917 , H04B10/505 , H04B10/5055 , H04B10/508 , H04B10/5162 , H04B10/541 , H04B10/6932 , H04L25/06
摘要： Binary information is subjected to RZ encoding and multi-level encoding, and the encoded signal is optically modulated.
摘要翻译：对二进制信息进行RZ编码和多级编码，并对编码信号进行光学调制。

53. 发明授权

US06826325B2 Optical signal switching unit 失效
标题翻译：光信号切换单元
公开(公告)号：US06826325B2
公开(公告)日：2004-11-30
申请号：US10190725
申请日：2002-07-09
申请人： Seiichiro Tabata , Takashi Mizuochi
发明人： Seiichiro Tabata , Takashi Mizuochi
IPC分类号： G02B626
CPC分类号： G02B6/3502 , G02B6/3546 , G02B6/3578
摘要： An optical signal switching unit causing no instantaneous cutoff in switching without a latency time. The optical signal switching unit has input waveguides and output waveguides, optical switches for switching the course of each optical signal, located at intersections between the waveguides and outputting the optical signal to the output waveguides. This optical signal switching unit includes optical switches and a switch state control part controlling the states of the optical switches, thereby controlling formation of the output optical signal. The optical switches take binary states including a first route state providing the optical signal with a first course and a second course state providing the optical signal with a second course, and an intermediate state including part of both of the first and second course states.
摘要翻译：光信号切换单元在没有延迟时间的情况下不进行切换的瞬时切断。光信号切换单元具有输入波导和输出波导，用于切换位于波导之间的交叉处的每个光信号的路线的光开关，并将光信号输出到输出波导。该光信号切换单元包括光开关和控制光开关状态的开关状态控制部，由此控制输出光信号的形成。光开关采取二进制状态，包括提供具有第一进程的光信号的第一路由状态和向第一进程提供光信号的第二进程状态，以及包括第一和第二进程状态两者的一部分的中间状态。

54. 发明授权

US09036995B2 Optical communication system 有权
标题翻译：光通信系统
公开(公告)号：US09036995B2
公开(公告)日：2015-05-19
申请号：US13814513
申请日：2010-09-03
申请人： Toshiyuki Tokura , Kazuyuki Ishida , Takashi Mizuochi
发明人： Toshiyuki Tokura , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04J14/02 , H04B10/077 , H04B10/29 , H04B10/291
CPC分类号： H04J14/02 , H04B10/0777 , H04B10/29 , H04B10/2916 , H04B2210/074 , H04J14/0276
摘要： An optical communication system includes an optical-signal transmission unit transmitting an existing optical signal and a low-rate-signal superimposition unit superimposing a low-rate signal on the existing optical signal by intensity modulation. It further includes: a low-rate-signal extraction unit that extracts the low-rate signal from the existing optical signal on which the low-rate signal is superimposed and converts the extracted low-rate signal into a low-rate electric signal; an add-on optical-signal transmission unit that transmits an add-on optical signal; a low-rate-signal superimposition unit that superimposes a low-rate signal on the add-on optical signal by the intensity modulation based on the low-rate electric signal; and a repeater that repeats the add-on optical signal on which the low-rate signal is superimposed, to a transmission destination.
摘要翻译：光通信系统包括光信号传输单元，其通过强度调制将现有光信号和低速信号叠加单元传输到现有光信号上。其还包括：低速率信号提取单元，从叠加了低速率信号的现有光信号中提取低速信号，并将提取的低速信号转换为低速电信号; 发送附加光信号的附加光信号传输单元; 低速率信号叠加单元，其通过基于低速率电信号的强度调制将低速率信号叠加在附加光信号上; 以及将重叠了低速率信号的附加光信号重复到发送目的地的中继器。

55. 发明授权

US08693864B2 Optical network system, optical redundant switching apparatus, and WDM apparatus 有权
标题翻译：光网络系统，光冗余交换设备和WDM设备
公开(公告)号：US08693864B2
公开(公告)日：2014-04-08
申请号：US13060332
申请日：2008-10-15
申请人： Kazuo Kubo , Takashi Mizuochi , Yuji Akiyama
发明人： Kazuo Kubo , Takashi Mizuochi , Yuji Akiyama
IPC分类号： H04J14/02
CPC分类号： H04J3/1652 , H04B1/74 , H04J3/14 , H04J14/0295 , H04J14/0297
摘要： An optical network system includes a first node that converts input signals of n systems into optical signals having wavelengths different for each of the systems and wavelength-multiplexes and transmits the optical signals and a second node that selects signals of n systems from the wavelength-multiplexed signals and outputs the signals. The first node includes an optical coupler that divides the input signals into operating system signals and redundant signals, TPNDs that convert the operating systems into optical signals, an optical switch that selects standby system signals from the redundant signals, and a TPND that converts the standby system signals into optical signals in a storage mode corresponding to a type of the standby system signals. The second node includes TPNDs that convert the optical signals converted from the operating system signals into signals of a type corresponding to the input signals, a TPND that converts the optical signals of the standby system signals into signals of the type of the input signals in a storage mode corresponding to the standby system signals, and an optical switch that selects an output destination of the signals output from the TPND.
摘要翻译：光网络系统包括将n个系统的输入信号转换成具有对于每个系统和波长复用的波长不同的波长的第一节点，并且发送光信号，以及从波长多路复用器件中选择n个系统的信号的第二节点信号并输出信号。第一个节点包括将输入信号分为操作系统信号和冗余信号的光耦合器，将操作系统转换为光信号的TPND，从冗余信号中选择待机系统信号的光开关，以及转换待机状态的TPND 系统以对应于备用系统信号的类型的存储模式将信号转换成光信号。第二节点包括将从操作系统信号转换的光信号转换为与输入信号相对应的类型的信号的TPND，将待机系统信号的光信号转换为输入信号类型的信号的TPND 对应于备用系统信号的存储模式，以及选择从TPND输出的信号的输出目的地的光开关。

56. 发明申请

US20130136451A1 OPTICAL TRANSFER SYSTEM, OPTICAL TRANSMISSION DEVICE, AND OPTICAL RECEPTION DEVICE 有权
标题翻译：光传输系统，光传输设备和光接收设备
公开(公告)号：US20130136451A1
公开(公告)日：2013-05-30
申请号：US13814617
申请日：2011-09-30
申请人： Tsuyoshi Yoshida , Takashi Sugihara , Kazuyuki Ishida , Takashi Mizuochi
发明人： Tsuyoshi Yoshida , Takashi Sugihara , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04J14/06
CPC分类号： H04J14/06 , H04B10/5053 , H04B10/532 , H04B10/616 , H04J14/002
摘要： In an optical transfer system, an optical transmission unit generates an optical signal in which respective polarization components are alternately present on a time axis, a time period during which the respective polarization components are simultaneously present on the time axis is substantially zero, and a symbol repetition cycle of optical signals of the respective polarization components becomes Ts, an optical reception unit causes an interference between local oscillation light and a received optical signal and converts an interfered optical signal to an electric signal, and a received electric-signal processing unit performs analog-digital conversion of an electric signal, elimination of a delay difference of Ts/2 between the respective polarized signal components, and adaptive equalization of a distortion other than the delay difference.
摘要翻译：在光传输系统中，光传输单元产生在时间轴上交替存在各偏振分量的光信号，时间轴上同时存在各偏振分量的时间段基本上为零，以及符号各个偏振分量的光信号的重复周期变为Ts，光接收单元引起局部振荡光和接收到的光信号之间的干扰，并将干扰的光信号转换为电信号，并且接收的电信号处理单元执行模拟电信号的数字转换，消除各极化信号分量之间的Ts / 2的延迟差，以及除了延迟差之外的失真的自适应均衡。

57. 发明申请

US20120246537A1 ERROR CORRECTION METHOD AND DEVICE 审中-公开
标题翻译：错误校正方法和设备
公开(公告)号：US20120246537A1
公开(公告)日：2012-09-27
申请号：US13513411
申请日：2010-11-19
申请人： Kazuo Kubo , Takashi Mizuochi
发明人： Kazuo Kubo , Takashi Mizuochi
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/2909 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/2945 , H03M13/6519 , H04L1/0057 , H04L1/0083
摘要： Provided is an error correction method for an optical communication system that transmits a transmission frame formed of information data added with an overhead and an error correction code, the error correction method including adjusting a size of an FEC redundant area of an FEC frame for storing client signals of different signal types in accordance with the client signals so that transmission rates of the FEC frame for the respective client signals have an approximately N-multiple relationship (N is a positive natural number). With this, it is possible to obtain an error correction method and device capable of providing a high-quality and high-speed optical communication system without performance degradation caused by jitter or the like and with the common use of circuits having a reduced circuit scale.
摘要翻译：提供了一种用于发送由添加有开销的信息数据和纠错码构成的传输帧的光通信系统的纠错方法，所述纠错方法包括：调整用于存储客户端的FEC帧的FEC冗余区域的大小根据客户端信号的不同信号类型的信号，使得各个客户端信号的FEC帧的传输速率具有大约N倍的关系（N是正的自然数）。由此，可以获得能够提供高质量和高速光通信系统的纠错方法和装置，而不会由抖动等引起的性能下降，并且通常使用具有减小的电路规模的电路。

58. 发明申请

US20120183303A1 MULTILEVEL MODULATED OPTICAL TRANSCEIVER AND MULTILEVEL MODULATED OPTICAL TRANSMITTING/RECEIVING METHOD 审中-公开
标题翻译：多路调制光收发器和多路调制光传输/接收方法
公开(公告)号：US20120183303A1
公开(公告)日：2012-07-19
申请号：US13499067
申请日：2010-09-27
申请人： Kiyoshi Onohara , Kazuo Kubo , Takashi Mizuochi
发明人： Kiyoshi Onohara , Kazuo Kubo , Takashi Mizuochi
IPC分类号： H04B10/02
CPC分类号： H04B10/613 , H04B10/40 , H04B10/614 , H04J3/1652 , H04J14/06 , H04L27/0012 , H04L27/18 , H04L27/34
摘要： A digital signal processing optical transceiver includes: a reception front end for separating an optical reception signal from a communication path into a total of four channels including an I-channel and a Q-channel of an X-polarized wave component and an I-channel and a Q-channel of a Y-polarized wave component; and a digital signal processing unit for: performing signal point determination with respect to signals of the four channels; when there are only two signal points, selecting two channels including an I-channel component of an X-polarized wave and an I-channel component of a Y-polarized wave and performing signal processing thereon; and when there are four signal points, selecting the four channels including the I-channel component and a Q-channel component of the X-polarized wave and the I-channel component and a Q-channel component of the Y-polarized wave and performing the signal processing thereon.
摘要翻译：数字信号处理光收发器包括：接收前端，用于将光接收信号从通信路径分离成总共四个信道，包括X极化波分量的I信道和Q信道，以及I信道和Y偏振波分量的Q通道; 以及数字信号处理单元，用于：针对四个通道的信号执行信号点确定; 当仅有两个信号点时，选择包括X偏振波的I信道分量和Y偏振波的I信道分量的两个信道并在其上执行信号处理; 并且当有四个信号点时，选择包括X极化波的I信道分量和Q信道分量以及Y波分量的Q信道分量和Y偏振波的Q信道分量的四个信道，并执行对其进行信号处理。

59. 发明申请

US20110255876A1 OPTICAL TRANSMITTER 有权
标题翻译：光学发射器
公开(公告)号：US20110255876A1
公开(公告)日：2011-10-20
申请号：US13140955
申请日：2010-01-13
申请人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi , Yoshiaki Konishi
发明人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi , Yoshiaki Konishi
IPC分类号： H04B10/04
CPC分类号： H04L27/36 , H04B10/5053 , H04B10/5055 , H04B10/516
摘要： An optical transmitter for converting an input data series into an optical multi-level signal and for outputting the same, includes an LUT in which data for executing optical multi-level modulation is stored and from which first modulation data and second modulation data are output based on the input data series. A DAC converts the first modulation data by D/A conversion to generate a first multi-level signal. A DAC converts the second modulation data by D/A conversion to generate a second multi-level signal. A dual-electrode MZ modulator includes a first phase modulator for modulating light from a light source in accordance with the first multi-level signal and a second phase modulator for modulating light from the light source in accordance with the second multi-level signal, and combines an optical signal from the first phase modulator and an optical signal from the second phase modulator to output the optical multi-level signal.
摘要翻译：用于将输入数据序列转换为光学多级信号并用于输出的光发送器包括：LUT，其中存储用于执行光学多电平调制的数据，并从其输出第一调制数据和第二调制数据在输入数据系列上。 DAC通过D / A转换来转换第一调制数据以产生第一多电平信号。 DAC通过D / A转换来转换第二调制数据以产生第二多电平信号。双电极MZ调制器包括用于根据第一多电平信号调制来自光源的光的第一相位调制器和用于根据第二多电平信号调制来自光源的光的第二相位调制器，以及组合来自第一相位调制器的光信号和来自第二相位调制器的光信号以输出光多电平信号。

60. 发明申请

US20110002693A1 DIGITAL SIGNAL PROCESSING OPTICAL TRANSMISSION APPARATUS 有权
标题翻译：数字信号处理光传输装置
公开(公告)号：US20110002693A1
公开(公告)日：2011-01-06
申请号：US12920851
申请日：2008-03-31
申请人： Takashi Mizuochi , Yoshiaki Konishi , Tatsuya Kobayashi
发明人： Takashi Mizuochi , Yoshiaki Konishi , Tatsuya Kobayashi
IPC分类号： H04B10/00
CPC分类号： H04B10/5059 , H04B10/548 , H04B10/564
摘要： In a digital signal processing optical transmission apparatus such as a predistortion or OFDM type one, optical transmission at a stable S/N ratio is intended to be able to be made by controlling an output of an optical transmission signal with fixed average power, even if a peak to average power ratio of the optical transmission signal changes. The apparatus is provided with an average power calculation unit (30) that calculates the average power of a digital signal outputted from a digital signal processing circuit (2), and an optical power variable unit (31) that serves to make constant the average power of an optical transmission signal outputted from an optical vector modulator (5).
摘要翻译：在诸如预失真或OFDM类型的数字信号处理光传输装置中，以稳定的S / N比的光传输旨在通过控制具有固定平均功率的光传输信号的输出来进行，即使光传输信号的峰值与平均功率比发生变化。该装置设置有计算从数字信号处理电路（2）输出的数字信号的平均功率的平均功率计算单元（30）和用于使平均功率恒定的光功率可变单元（31）从光矢量调制器（5）输出的光传输信号。

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