公开(公告)号：US09014569B2

公开(公告)日：2015-04-21

申请号：US13252201

申请日：2011-10-04

申请人： Koji Biwa ,  Kosuke Komaki

发明人： Koji Biwa ,  Kosuke Komaki

IPC分类号： H04J14/02 ,  H04B10/077

CPC分类号： H04J14/0221 ,  H04B10/0773 ,  H04J14/0276

摘要： In an optical node, a transmitter produces an optical supervisory signal for supervising an optical network, a processor is operative to control a power level of the optical supervisory signal according to a per-wavelength power level of an optical communication signal when the optical node has no post amplifiers, and a multiplexer combines the controlled optical supervisory signal with the optical communication signal to be transmitted to another optical node located downstream.

摘要翻译： 在光节点中，发射机产生用于监视光网络的光监控信号，当光节点具有光通信信号时，处理器可操作以根据光通信信号的每波长功率电平来控制光监控信号的功率电平 没有后置放大器，并且多路复用器将受控光监控信号与要发送到位于下游的另一光节点的光通信信号组合。

公开(公告)号：US08989602B2

公开(公告)日：2015-03-24

申请号：US13283214

申请日：2011-10-27

申请人： Kosuke Komaki ,  Osamu Takeuchi

发明人： Kosuke Komaki ,  Osamu Takeuchi

IPC分类号： H04B10/06 ,  H04L25/03 ,  H04B10/61

CPC分类号： H04L25/03019 ,  H04B10/611 ,  H04B10/6166 ,  H04L2025/0363

摘要： A digital coherent optical receiver includes a processor that is operative to separate electric signals obtained by converting an optical signal into a horizontal signal component and a vertical signal component; to generate a histogram of the horizontal signal component and the vertical signal component as outputs of the equalizing filter; and to determine a presence/absence of local convergence based on distribution of the histogram of the horizontal signal component and the histogram of the vertical signal component.

摘要翻译： 一种数字相干光接收机包括：处理器，用于将通过将光信号转换成水平信号分量和垂直信号分量获得的电信号分离; 以产生水平信号分量和垂直信号分量的直方图作为均衡滤波器的输出; 并且基于水平信号分量的直方图和垂直信号分量的直方图的分布来确定局部收敛的存在/不存在。

公开(公告)号：US08655185B2

公开(公告)日：2014-02-18

申请号：US13004532

申请日：2011-01-11

申请人： Takeshi Sakamoto ,  Katsumi Fukumitsu ,  Kosuke Komaki

发明人： Takeshi Sakamoto ,  Katsumi Fukumitsu ,  Kosuke Komaki

IPC分类号： H04B10/00

CPC分类号： H04B10/0775 ,  H04B2210/074 ,  H04B2210/078

摘要： An optical node disposed along a transmission line that uses optical fiber. The optical node includes a first signal generator and a monitor. The first signal generator generates a first measurement signal for measuring polarization mode dispersion values and transmits the first measurement signal along the transmission line. The monitor detects a second measurement signal from the transmission line and measures polarization mode dispersion values by performing signal processing with respect to the second measurement signal.

摘要翻译： 沿着使用光纤的传输线设置的光学节点。 光节点包括第一信号发生器和监视器。 第一信号发生器产生用于测量偏振模色散值的第一测量信号，并沿传输线发送第一测量信号。 监视器从传输线检测第二测量信号，并通过对第二测量信号执行信号处理来测量偏振模色散值。

公开(公告)号：US08358939B2

公开(公告)日：2013-01-22

申请号：US12845291

申请日：2010-07-28

申请人： Kosuke Komaki

发明人： Kosuke Komaki

IPC分类号： H04B10/06 ,  H04K9/00 ,  H04L27/00 ,  H04L7/02

CPC分类号： H04B10/611 ,  H04B10/60 ,  H04B10/616

摘要： An optical communication device using a digital coherent reception system includes a phase detector configured to generate, based on a signal obtained in a course of digital signal processing, a phase signal indicating a displacement of a sampling of a reception signal, a clock switch-determiner configured to switch from an reference clock to a clock of transferred data when a value of an amplitude of the phase signal exceeds a given threshold value, and a selector configured to synchronize the sampling of the reception signal and an internal clock of the digital signal processing with the reference clock at start time or signal loss time, and synchronize the sampling of the reception signal and the internal clock with the line clock of the reception signal except for the start time and the signal loss time.

摘要翻译： 使用数字相干接收系统的光通信装置包括相位检测器，被配置为基于在数字信号处理过程中获得的信号产生指示接收信号的采样位移的相位信号，时钟切换确定器 被配置为当所述相位信号的振幅值超过给定阈值时从参考时钟切换到传送数据的时钟;以及选择器，被配置为使所述接收信号的采样与所述数字信号处理的内部时钟同步 与参考时钟在起始时间或信号丢失时间，并且接收信号和内部时钟的采样与除了开始时间和信号丢失时间之外的接收信号的行时钟同步。

公开(公告)号：US20110026940A1

公开(公告)日：2011-02-03

申请号：US12845291

申请日：2010-07-28

申请人： Kosuke KOMAKI

发明人： Kosuke KOMAKI

IPC分类号： H04B10/06

CPC分类号： H04B10/611 ,  H04B10/60 ,  H04B10/616

摘要： An optical communication device using a digital coherent reception system includes a phase detector configured to generate, based on a signal obtained in a course of digital signal processing, a phase signal indicating a displacement of a sampling of a reception signal, a clock switch-determiner configured to switch from an reference clock to a clock of transferred data when a value of an amplitude of the phase signal exceeds a given threshold value, and a selector configured to synchronize the sampling of the reception signal and an internal clock of the digital signal processing with the reference clock at start time or signal loss time, and synchronize the sampling of the reception signal and the internal clock with the line clock of the reception signal except for the start time and the signal loss time.

摘要翻译： 使用数字相干接收系统的光通信装置包括相位检测器，被配置为基于在数字信号处理过程中获得的信号产生指示接收信号的采样位移的相位信号，时钟切换确定器 被配置为当所述相位信号的振幅值超过给定阈值时从参考时钟切换到传送数据的时钟;以及选择器，被配置为使所述接收信号的采样与所述数字信号处理的内部时钟同步 与参考时钟在起始时间或信号丢失时间，并且接收信号和内部时钟的采样与除了开始时间和信号丢失时间之外的接收信号的行时钟同步。

公开(公告)号：US08670678B2

公开(公告)日：2014-03-11

申请号：US13034082

申请日：2011-02-24

申请人： Yuichirou Sakamoto ,  Kosuke Komaki

发明人： Yuichirou Sakamoto ,  Kosuke Komaki

IPC分类号： H04B10/06

CPC分类号： H04B10/611 ,  H04B10/60 ,  H04B10/6165

摘要： A digital coherent receiver converts signals and local light respectively detected, as detection results, in signal light from an optical transmission line, into digital signals and that further applies digital processing to the digital signals. The receiver includes a skew detecting unit that detects skew between the digital signals; a skew control unit controls the skew of each of the signals so that the skew to be detected by the skew detecting unit will be reduced; and a demodulating unit that demodulates each signal controlled for skew by the skew control unit.

摘要翻译： 数字相干接收机将来自光传输线的信号光中的检测结果分别检测的信号和局部光转换为数字信号，并进一步对数字信号进行数字处理。 接收机包括检测数字信号之间的偏斜的偏斜检测单元; 偏斜控制单元控制每个信号的偏斜，从而减少由偏斜检测单元检测的偏斜; 以及解调单元，其对由偏斜控制单元控制的偏斜信号进行解调。

公开(公告)号：US20120308227A1

公开(公告)日：2012-12-06

申请号：US13446177

申请日：2012-04-13

申请人： Kosuke KOMAKI ,  Hisao Nakashima

发明人： Kosuke KOMAKI ,  Hisao Nakashima

IPC分类号： H04B10/08

CPC分类号： H04B10/25073 ,  H04B10/2569 ,  H04B10/6971 ,  H04L7/0087 ,  H04L7/0335

摘要： A digital coherent receiver includes a sampling phase detector to detect a phase of a sampled digital signal, and a phase adjustor to adjust the sampling phase of the digital signal based upon the detected phase. The phase detector includes filters to equalize the digital signal with different equalization characteristics; sensitivity monitoring phase detectors, each connected to one of the filters and outputting a phase detection signal representing the phase of the output signal from the associated filter together with a sensitivity monitoring signal representing the sensitivity of the phase detection; sensitivity correction coefficient generators, each generating a sensitivity correction coefficient for correcting the associated phase detection signal using a square sum of the sensitivity monitoring signals; and an adder to add the phase detection signals that have been corrected by the sensitivity correction coefficients, and output a phase signal.

摘要翻译： 数字相干接收机包括：采样相位检测器，用于检测采样数字信号的相位;以及相位调节器，用于根据检测到的相位调整数字信号的采样相位。 相位检测器包括滤波器，以均衡具有不同均衡特性的数字信号; 灵敏度监视相位检测器，每个检测器连接到滤波器之一并输出表示来自相关滤波器的输出信号的相位的相位检测信号以及表示相位检测的灵敏度的灵敏度监视信号; 灵敏度校正系数发生器，每个灵敏度校正系数发生器使用平方和的灵敏度监视信号产生用于校正相关联的相位检测信号的灵敏度校正系数; 以及加法器，将通过灵敏度校正系数校正的相位检测信号相加，并输出相位信号。

公开(公告)号：US20120051754A1

公开(公告)日：2012-03-01

申请号：US13177644

申请日：2011-07-07

申请人： Takeshi SAKAMOTO ,  Kosuke Komaki

发明人： Takeshi SAKAMOTO ,  Kosuke Komaki

IPC分类号： H04B10/06 ,  H04B10/00

CPC分类号： H04B10/032 ,  H04B10/07951 ,  H04B10/07953 ,  H04B10/616

摘要： An optical receiver includes: an optical to electric converter that converts a received optical signal into an analog electric signal; an analog to digital converter that converts the analog electric signal obtained by the optical to electric converter into a digital signal; a digital signal processor that performs wave shaping on the digital signal; an information extract circuit that extracts information related to loss or deterioration of the optical signal from a signal propagating from the analog to digital converter to the digital signal processor or a signal in the digital signal processor; and a judging circuit that judges, based on the information extracted by the information extract circuit, whether the optical signal is lost or deteriorates.

摘要翻译： 一种光接收机包括：光接收电转换器，将接收到的光信号转换为模拟电信号; 将由光电转换器获得的模拟电信号转换为数字信号的模数转换器; 数字信号处理器，对数字信号进行波形整形; 信息提取电路，从从模数转换器传播到数字信号处理器的信号或数字信号处理器中的信号中提取与光信号的丢失或劣化有关的信息; 以及判断电路，其基于由信息提取电路提取的信息判断光信号是丢失还是劣化。

公开(公告)号：US20110200339A1

公开(公告)日：2011-08-18

申请号：US13017874

申请日：2011-01-31

申请人： Kosuke KOMAKI ,  Masahiro Shioda ,  Katsumi Fukumitsu ,  Osamu Takeuchi

发明人： Kosuke KOMAKI ,  Masahiro Shioda ,  Katsumi Fukumitsu ,  Osamu Takeuchi

IPC分类号： H04B10/06

CPC分类号： H04B10/6971 ,  H04B10/61 ,  H04B10/611 ,  H04B10/613 ,  H04B10/6151 ,  H04B10/6161 ,  H04B10/6165 ,  H04L7/0004 ,  H04L7/0335 ,  H04L27/223 ,  H04L27/227

摘要： An optical receiver includes: a waveform distortion compensator to perform an operation on digital signal representing an optical signal generated by an A/D converter to compensate for waveform distortion of the optical signal; a phase detector to generate phase information representing sampling phase of the A/D converter; a phase adjuster to generate digital signal representing an optical signal in which the sampling phase of the A/D converter is adjusted from an output signal of the waveform distortion compensator using the phase information; a demodulator to generate a demodulated signal from the output signal of the phase adjuster; a phase controller to control the sampling phase of the A/D converter; a peak detector to detect a peak value of the phase information while the sampling phase of the A/D converter is controlled by the phase controller; and a compensation controller to control the waveform distortion compensator using the peak value.

摘要翻译： 光接收器包括：波形失真补偿器，用于对表示由A / D转换器产生的光信号的数字信号进行操作以补偿光信号的波形失真; 相位检测器，用于产生表示A / D转换器的采样相位的相位信息; 相位调节器，用于产生代表使用相位信息的波形失真补偿器的输出信号调整A / D转换器的采样相位的光信号的数字信号; 解调器，用于从所述相位调节器的输出信号产生解调信号; 控制A / D转换器采样相位的相位控制器; 峰值检测器，用于在由相位控制器控制A / D转换器的采样相位时检测相位信息的峰值; 以及使用峰值来控制波形失真补偿器的补偿控制器。

公开(公告)号：US07899331B2

公开(公告)日：2011-03-01

申请号：US11882094

申请日：2007-07-30

申请人： Hiroyuki Itoh ,  Kosuke Komaki

发明人： Hiroyuki Itoh ,  Kosuke Komaki

IPC分类号： H04J14/02

CPC分类号： H04J14/0221

摘要： According to a WDM optical transmission system of the present invention, wavelength numbers information of a WDM signal light output from an upstream side optical amplifying unit to a transmission path fiber, and signal output level information thereof are transmitted to a downstream side optical amplifying unit utilizing a supervisory control light. In the downstream side optical amplifying unit, a loss (span loss) in the transmission path fiber is computed using the upstream side signal output level information and downstream side signal input level information, so that a gain to be set for a downstream side optical amplifier is calculated based on the computed loss, and also, the gain is corrected based on a difference between a target value of the signal output level computed using the wavelength numbers information and an actual measurement value thereof, so that the optical amplifier is controlled in accordance with the post-corrected gain. As a result, it becomes possible to reduce an influence by a measurement error of the span loss, to thereby control the optical amplifier at a high-speed and with high precision.

摘要翻译： 根据本发明的WDM光传输系统，将从上游侧光放大单元输出到传输路径光纤的WDM信号光的波长数信息及其信号输出电平信息发送到下游侧光放大单元，利用 监控灯。 在下游侧光放大单元中，使用上游侧信号输出电平信息和下行侧信号输入电平信息计算传输路径光纤中的损耗（跨度损耗），使得对下游侧光放大器设定的增益 是基于计算出的损耗计算的，并且还基于使用波长数信息计算的信号输出电平的目标值与其实际测量值之间的差来校正增益，使得光放大器按照 与修正后的收益。 结果，可以减小跨度损失的测量误差的影响，从而以高速和高精度控制光放大器。