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1. 发明授权

US08655185B2 Optical node, optical network system, and method for measuring polarization mode dispersion 有权
标题翻译：光节点，光网络系统和偏振模色散测量方法
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。

2. 发明授权

US08478137B2 Optical receiver 有权
标题翻译：光接收机
公开(公告)号：US08478137B2
公开(公告)日：2013-07-02
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。

3. 发明申请

US20120051754A1 OPTICAL RECEIVER, METHOD FOR RECEIVING OPTICAL SIGNAL, AND OPTICAL TRANSMISSION SYSTEM 有权
标题翻译：光接收机，接收光信号的方法和光传输系统
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。

4. 发明授权

US07756422B2 Method for measuring optical characteristics and system thereof 有权
标题翻译：测量光学特性的方法及其系统
公开(公告)号：US07756422B2
公开(公告)日：2010-07-13
申请号：US11502535
申请日：2006-08-11
申请人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
发明人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
IPC分类号： H04B10/00
CPC分类号： H04B10/07
摘要： During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light. During normal operation of the optical communication system, a span loss is calculated using the OSC light, and an amount of change in the span loss representing a difference between the span loss and the OSC reference span loss is calculated. A current span loss between a transmitting station and a receiving station is calculated by adding the amount of change in the span loss to the ASE reference span loss.
摘要翻译：在光通信系统的初始启动期间，基于由光放大器产生的ASE光的发射功率和接收功率来计算ASE参考跨度损耗，并且基于发射功率和接收到的功率来计算OSC参考跨度损耗 OSC灯的功率。在光通信系统的正常工作期间，使用OSC灯计算跨度损耗，并且计算表示跨度损耗与OSC参考跨度损耗之间的差异的跨度损耗的变化量。通过将跨度损耗的变化量与ASE参考跨度损耗相加来计算发送站和接收站之间的电流跨度损耗。

5. 发明申请

US20070217794A1 Method for measuring optical characteristics and system thereof 有权
标题翻译：测量光学特性的方法及其系统
公开(公告)号：US20070217794A1
公开(公告)日：2007-09-20
申请号：US11502535
申请日：2006-08-11
申请人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
发明人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
IPC分类号： H04B10/00
CPC分类号： H04B10/07
摘要： During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light. During normal operation of the optical communication system, a span loss is calculated using the OSC light, and an amount of change in the span loss representing a difference between the span loss and the OSC reference span loss is calculated. A current span loss between a transmitting station and a receiving station is calculated by adding the amount of change in the span loss to the ASE reference span loss.
摘要翻译：在光通信系统的初始启动期间，基于由光放大器产生的ASE光的发射功率和接收功率来计算ASE参考跨度损耗，并且基于发射功率和接收到的功率来计算OSC参考跨度损耗 OSC灯的功率。在光通信系统的正常工作期间，使用OSC灯计算跨度损耗，并且计算表示跨度损耗与OSC参考跨度损耗之间的差异的跨度损耗的变化量。通过将跨度损耗的变化量与ASE参考跨度损耗相加来计算发送站和接收站之间的电流跨度损耗。

6. 发明授权

US08824902B2 Optical receiver, method for receiving optical signal, and optical transmission system 有权
标题翻译：光接收机，光信号接收方法及光传输系统
公开(公告)号：US08824902B2
公开(公告)日：2014-09-02
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 , H04B17/00 , H04B10/079 , H04B10/032 , H04B10/61
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。

7. 发明授权

US08670678B2 Digital coherent receiver and digital coherent reception method 有权
标题翻译：数字相干接收机和数字相干接收方式
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。

8. 发明授权

US07899331B2 WDM optical transmission system and optical amplifying apparatus 有权
标题翻译： WDM光传输系统和光放大装置
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。

9. 发明申请

US20080080867A1 WDM optical transimission system and optical amplifying apparatus 有权
标题翻译： WDM光传输系统和光放大装置
公开(公告)号：US20080080867A1
公开(公告)日：2008-04-03
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。

10. 发明授权

US09014569B2 Optical node and optical communication method 有权
标题翻译：光节点和光通信方法
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。

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