公开(公告)号：US20080170864A1

公开(公告)日：2008-07-17

申请号：US12013708

申请日：2008-01-14

申请人： Masato NISHIHARA ,  Tomoo Takahara ,  Yuichi Akiyama ,  Masahiro Yuki

发明人： Masato NISHIHARA ,  Tomoo Takahara ,  Yuichi Akiyama ,  Masahiro Yuki

IPC分类号： H04B10/04

CPC分类号： H04B10/548 ,  H04B10/5162

摘要： The disclosed device and method include varying phases of two data signals at a first predetermined frequency, performing multi-level phase modulation of a light based on the two data signals whose phases are varied at the first predetermined frequency, extracting a component having the first predetermined frequency from an optical signal subjected to the phase modulation, and controlling the phases of the two data signals based on the component extracted from the optical signal.

摘要翻译： 所公开的设备和方法包括以第一预定频率改变两个数据信号的相位，基于相位以第一预定频率变化的两个数据信号执行光的多电平相位调制，提取具有第一预定频率的分量 来自经过相位调制的光信号的频率，并且基于从光信号提取的分量来控制两个数据信号的相位。

公开(公告)号：US08582980B2

公开(公告)日：2013-11-12

申请号：US12013708

申请日：2008-01-14

申请人： Masato Nishihara ,  Tomoo Takahara ,  Yuichi Akiyama ,  Masahiro Yuki

发明人： Masato Nishihara ,  Tomoo Takahara ,  Yuichi Akiyama ,  Masahiro Yuki

IPC分类号： H04B10/04

CPC分类号： H04B10/548 ,  H04B10/5162

摘要： The disclosed device and method include varying phases of two data signals at a first predetermined frequency, performing multi-level phase modulation of a light based on the two data signals whose phases are varied at the first predetermined frequency, extracting a component having the first predetermined frequency from an optical signal subjected to the phase modulation, and controlling the phases of the two data signals based on the component extracted from the optical signal.

摘要翻译： 所公开的设备和方法包括以第一预定频率改变两个数据信号的相位，基于相位以第一预定频率变化的两个数据信号执行光的多电平相位调制，提取具有第一预定频率的分量 来自经过相位调制的光信号的频率，并且基于从光信号提取的分量来控制两个数据信号的相位。

公开(公告)号：US20120082465A1

公开(公告)日：2012-04-05

申请号：US12879820

申请日：2010-09-10

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

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

IPC分类号： H04B10/06 ,  H04B10/00

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US07817923B2

公开(公告)日：2010-10-19

申请号：US11275420

申请日：2005-12-30

申请人： Yuichi Akiyama ,  Takeshi Hoshida ,  Yutaka Kai ,  Hiroki Ooi ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

发明人： Yuichi Akiyama ,  Takeshi Hoshida ,  Yutaka Kai ,  Hiroki Ooi ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

IPC分类号： H04B10/04

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US08867927B2

公开(公告)日：2014-10-21

申请号：US12879820

申请日：2010-09-10

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

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

IPC分类号： H04B10/04

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US20090116844A1

公开(公告)日：2009-05-07

申请号：US12230247

申请日：2008-08-26

申请人： Toshiki Tanaka ,  Yuichi Akiyama ,  Tomoo Takahara

发明人： Toshiki Tanaka ,  Yuichi Akiyama ,  Tomoo Takahara

IPC分类号： H04B10/00

CPC分类号： H04B10/6971 ,  H04B10/677

摘要： An optical receiving apparatus branches an optical signal, photo-electric-converts the branched signals, and compensates dispersion in each of the converted electrical signals. Electrical-dispersion compensators respectively compensate the dispersion in the electrical signals using a transversal filter having plural taps. A dispersion control unit controls the dispersion compensation amount for each of the electrical signals by adjusting tap coefficients of the transversal filter. A delay control unit controls the difference in the delay time of the electrical signals by adjusting the tap coefficients adjusted by the dispersion control unit. An identifying circuit identifies data in the optical signal based on each of the electrical signals that have been subjected to dispersion compensation by each of the electrical-dispersion compensators.

摘要翻译： 光接收装置分支光信号，对分支信号进行光电转换，并补偿每个转换的电信号中的色散。 电色散补偿器使用具有多个抽头的横向滤波器分别补偿电信号中的色散。 色散控制单元通过调整横向滤波器的抽头系数来控制每个电信号的色散补偿量。 延迟控制单元通过调整由色散控制单元调节的抽头系数来控制电信号的延迟时间的差异。 识别电路基于通过每个电色散补偿器进行色散补偿的每个电信号来识别光信号中的数据。

公开(公告)号：US08145071B2

公开(公告)日：2012-03-27

申请号：US12230247

申请日：2008-08-26

申请人： Toshiki Tanaka ,  Yuichi Akiyama ,  Tomoo Takahara

发明人： Toshiki Tanaka ,  Yuichi Akiyama ,  Tomoo Takahara

IPC分类号： H04B10/06 ,  H04B10/18

CPC分类号： H04B10/6971 ,  H04B10/677

摘要： An optical receiving apparatus branches an optical signal, photo-electric-converts the branched signals, and compensates dispersion in each of the converted electrical signals. Electrical-dispersion compensators respectively compensate the dispersion in the electrical signals using a transversal filter having plural taps. A dispersion control unit controls the dispersion compensation amount for each of the electrical signals by adjusting tap coefficients of the transversal filter. A delay control unit controls the difference in the delay time of the electrical signals by adjusting the tap coefficients adjusted by the dispersion control unit. An identifying circuit identifies data in the optical signal based on each of the electrical signals that have been subjected to dispersion compensation by each of the electrical-dispersion compensators.

摘要翻译： 光接收装置分支光信号，对分支信号进行光电转换，并补偿每个转换的电信号中的色散。 电色散补偿器使用具有多个抽头的横向滤波器分别补偿电信号中的色散。 色散控制单元通过调整横向滤波器的抽头系数来控制每个电信号的色散补偿量。 延迟控制单元通过调整由色散控制单元调节的抽头系数来控制电信号的延迟时间的差异。 识别电路基于通过每个电色散补偿器进行色散补偿的每个电信号来识别光信号中的数据。

公开(公告)号：US20060263097A1

公开(公告)日：2006-11-23

申请号：US11256128

申请日：2005-10-24

申请人： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara

发明人： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara

IPC分类号： H04B10/04

CPC分类号： H04B10/5561 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165

摘要： 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.

摘要翻译： 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（pi / 2）。 在其中一个光信号上叠加低频信号f 0 0。 将相位从低频信号f 0 0 <0>移位π/ 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2f 0 0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f 0 0分量成为最小。

公开(公告)号：US08565616B2

公开(公告)日：2013-10-22

申请号：US13028677

申请日：2011-02-16

申请人： Toshiki Tanaka ,  Yuichi Akiyama ,  Masato Nishihara

发明人： Toshiki Tanaka ,  Yuichi Akiyama ,  Masato Nishihara

IPC分类号： H04B10/04

CPC分类号： H04B10/50575 ,  H04B10/564 ,  H04J14/06

摘要： A polarized-wave-multiplexing optical transmitter including: an optical combiner generating a polarized-wave-multiplexed optical signal by polarized-wave-multiplexing a first optical modulation signal and a second optical modulation signal; an optical power fluctuation portion fluctuating optical power of the first optical modulation signal and the second optical modulation signal periodically; a total-optical-power detection portion detecting fluctuation amount of total optical power of the polarized-wave-multiplexed optical signal; and an optical power controller reducing an optical power difference between the first optical modulation signal and the second optical modulation signal based on detection result of the total-optical-power detection portion.

摘要翻译： 一种偏振波复用光发送器，包括：光合成器，通过对第一光调制信号和第二光调制信号进行极化波多路复用产生偏振波复用光信号; 光功率波动部分周期性地波动第一光调制信号和第二光调制信号的光功率; 总光功率检测部分，检测偏振波复用光信号的总光功率的波动量; 以及光功率控制器，其基于所述总光功率检测部的检测结果，降低所述第一光调制信号与所述第二光调制信号之间的光功率差。

公开(公告)号：US08582981B2

公开(公告)日：2013-11-12

申请号：US12013857

申请日：2008-01-14

申请人： Yuichi Akiyama ,  Hideyuki Miyata ,  Toshiki Tanaka ,  Masato Nishihara

发明人： Yuichi Akiyama ,  Hideyuki Miyata ,  Toshiki Tanaka ,  Masato Nishihara

IPC分类号： H04B10/00

CPC分类号： H04B10/5053 ,  H04B10/50 ,  H04B10/50575

摘要： The disclosed optical transmitter and control method include performing phase modulation of a light propagating through a corresponding optical path in accordance with a data signal, supplying bias voltages for regulating an operating point of each of phase modulation performed, imparting a predetermined phase difference, supplying bias voltages for phase difference regulation and coupling lights output from the corresponding optical paths. The optical transmitter includes superimposing a pilot signal on either one of bias voltages where the pilot signal has a frequency lower than a frequency of a bit rate of the data signal, and performing a feedback control in accordance with a result of monitoring.

摘要翻译： 所公开的光发射机和控制方法包括根据数据信号执行通过对应的光路传播的光的相位调制，提供用于调节执行的每个相位调制的工作点的偏置电压，赋予预定的相位差，提供偏置 用于从相应光路输出的相位差调节和耦合光的电压。 光发射机包括将导频信号叠加在导频信号的频率低于数据信号的比特率的频率的偏置电压中的任一个上，并且根据监视的结果进行反馈控制。