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：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：US20060263098A1

公开(公告)日：2006-11-23

申请号：US11275420

申请日：2005-12-30

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（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：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：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：US20070248361A1

公开(公告)日：2007-10-25

申请号：US11517392

申请日：2006-09-08

申请人： Kentaro Nakamura ,  Masahiro Yuki ,  Takeshi Hoshida ,  George Ishikawa

发明人： Kentaro Nakamura ,  Masahiro Yuki ,  Takeshi Hoshida ,  George Ishikawa

IPC分类号： H04B10/00

CPC分类号： H04J14/0212 ,  H04B10/2569 ,  H04B10/532 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/028 ,  H04J14/0283

摘要： A polarization scrambler has a polarization state rotating unit rotating the polarization state of a signal light, and a rotation speed controlling unit controlling the rotation speed of the polarization state in the polarization state rotating unit on the basis of the speed and scheme of modulation of the signal light, and the value of polarization mode dispersion of a transmission path on which the signal light is to be transmitted. Degradation of the transmission quality due to PMD is more mitigated than the known techniques.

摘要翻译： 偏振加扰器具有旋转信号光的偏振状态的偏振状态旋转单元，以及基于偏振状态旋转单元的调制速度和调制方式来控制偏振状态旋转单元中的偏振状态的旋转速度的旋转速度控制单元 信号光，以及发射信号光的传输路径的偏振模色散值。 由PMD导致的传输质量的降低比已知技术更为缓和。

公开(公告)号：US07583895B2

公开(公告)日：2009-09-01

申请号：US11517392

申请日：2006-09-08

申请人： Kentaro Nakamura ,  Masahiro Yuki ,  Takeshi Hoshida ,  George Ishikawa

发明人： Kentaro Nakamura ,  Masahiro Yuki ,  Takeshi Hoshida ,  George Ishikawa

IPC分类号： H04B10/00 ,  H04B10/12 ,  H04J14/06

CPC分类号： H04J14/0212 ,  H04B10/2569 ,  H04B10/532 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/028 ,  H04J14/0283

摘要： A polarization scrambler has a polarization state rotating unit rotating the polarization state of a signal light, and a rotation speed controlling unit controlling the rotation speed of the polarization state in the polarization state rotating unit on the basis of the speed and scheme of modulation of the signal light, and the value of polarization mode dispersion of a transmission path on which the signal light is to be transmitted. Degradation of the transmission quality due to PMD is more mitigated than the known techniques.

摘要翻译： 偏振加扰器具有旋转信号光的偏振状态的偏振状态旋转单元，以及基于偏振状态旋转单元的调制速度和调制方式来控制偏振状态旋转单元中的偏振状态的旋转速度的旋转速度控制单元 信号光，以及发射信号光的传输路径的偏振模色散值。 由PMD导致的传输质量的降低比已知技术更为缓和。

公开(公告)号：US20070264028A1

公开(公告)日：2007-11-15

申请号：US11599277

申请日：2006-11-15

申请人： Masahiro Yuki ,  Kentaro Nakamura ,  Hiroki Ooi ,  Masato Nishihara

发明人： Masahiro Yuki ,  Kentaro Nakamura ,  Hiroki Ooi ,  Masato Nishihara

IPC分类号： H04B10/04

CPC分类号： H04B10/5051 ,  H04B10/5057 ,  H04B10/50577 ,  H04B10/58

摘要： In an optical transmitter of the invention, continuous light from a light source is a (CS)RZ-D(Q)PSK modulated by two optical modulators connected in series, and a part of the optical signal output from a post-stage optical modulator is branched by an output monitor section, and the power of a preset frequency component, excluding a frequency component corresponding to a baud rate, included in an electrical spectrum acquired by photoelectrically converting the branched beams is measured. The relative phase of drive signals applied to the optical modulators is then feed-back controlled so that the power becomes a minimum. As a result, a delay shift due to a temperature change or the like between drive signals applied to respective optical modulators, can be reliably compensated.

摘要翻译： 在本发明的光发射机中，来自光源的连续光是由串联连接的两个光调制器调制的（CS）RZ-D（Q）PSK，并且从后级光调制器输出的一部分光信号 由输出监视部分支，并且测量包括在通过光电转换分支光束获得的电谱中的除波特率对应的频率分量之外的预设频率分量的功率。 然后反馈控制施加到光学调制器的驱动信号的相对相位，使得功率变得最小。 结果，可以可靠地补偿由于施加到各个光学调制器的驱动信号之间的温度变化等引起的延迟偏移。

公开(公告)号：US07778553B2

公开(公告)日：2010-08-17

申请号：US11599277

申请日：2006-11-15

申请人： Masahiro Yuki ,  Kentaro Nakamura ,  Hiroki Ooi ,  Masato Nishihara

发明人： Masahiro Yuki ,  Kentaro Nakamura ,  Hiroki Ooi ,  Masato Nishihara

IPC分类号： H04B10/04

CPC分类号： H04B10/5051 ,  H04B10/5057 ,  H04B10/50577 ,  H04B10/58

摘要： In an optical transmitter of the invention, continuous light from a light source is a (CS)RZ-D(Q)PSK modulated by two optical modulators connected in series, and a part of the optical signal output from a post-stage optical modulator is branched by an output monitor section, and the power of a preset frequency component, excluding a frequency component corresponding to a baud rate, included in an electrical spectrum acquired by photoelectrically converting the branched beams is measured. The relative phase of drive signals applied to the optical modulators is then feed-back controlled so that the power becomes a minimum. As a result, a delay shift due to a temperature change or the like between drive signals applied to respective optical modulators, can be reliably compensated.

摘要翻译： 在本发明的光发射机中，来自光源的连续光是由串联连接的两个光调制器调制的（CS）RZ-D（Q）PSK，并且从后级光调制器输出的一部分光信号 由输出监视部分支，并且测量包括在通过光电转换分支光束获得的电谱中的除波特率对应的频率分量之外的预设频率分量的功率。 然后反馈控制施加到光学调制器的驱动信号的相对相位，使得功率变得最小。 结果，可以可靠地补偿由于施加到各个光学调制器的驱动信号之间的温度变化等引起的延迟偏移。