公开(公告)号：US07848659B2

公开(公告)日：2010-12-07

申请号：US11298892

申请日：2005-12-12

申请人： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

发明人： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

IPC分类号： H04B10/04

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50597 ,  H04B10/58

摘要： A data modulator unit generates a DQPSK optical signal in accordance with a data signal. A phase shift unit provides a phase difference of π/2 between a pair of arms. A photodetector converts an output signal of the data modulator unit into an electrical signal. A filter is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector. A monitor unit detects power of an output signal of the filter. A phase difference control unit adjusts the amount of phase shift in the phase shift unit so as to minimize power of an output signal of the filter.

摘要翻译： 数据调制器单元根据数据信号产生DQPSK光信号。 相移单元在一对臂之间提供＆pgr / / 2的相位差。 光电检测器将数据调制器单元的输出信号转换为电信号。 滤波器是具有低于符号频率的截止频率的低通滤波器，并对光电检测器的输出信号进行滤波。 监视器单元检测滤波器的输出信号的功率。 相位差控制单元调整相移单元中的相移量，以使滤波器的输出信号的功率最小化。

公开(公告)号：US20070065161A1

公开(公告)日：2007-03-22

申请号：US11298892

申请日：2005-12-12

申请人： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

发明人： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

IPC分类号： H04B10/04

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50597 ,  H04B10/58

摘要： A data modulator unit generates a DQPSK optical signal in accordance with a data signal. A phase shift unit provides a phase difference of π/2 between a pair of arms. A photodetector converts an output signal of the data modulator unit into an electrical signal. A filter is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector. A monitor unit detects power of an output signal of the filter. A phase difference control unit adjusts the amount of phase shift in the phase shift unit so as to minimize power of an output signal of the filter.

摘要翻译： 数据调制器单元根据数据信号产生DQPSK光信号。 相移单元提供一对臂之间的π/ 2的相位差。 光电检测器将数据调制器单元的输出信号转换为电信号。 滤波器是具有低于符号频率的截止频率的低通滤波器，并对光电检测器的输出信号进行滤波。 监视器单元检测滤波器的输出信号的功率。 相位差控制单元调整相移单元中的相移量，以使滤波器的输出信号的功率最小化。

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：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：US07603007B2

公开(公告)日：2009-10-13

申请号：US12234931

申请日：2008-09-22

申请人： Takafumi Terahara ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura

发明人： Takafumi Terahara ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura

IPC分类号： G02B6/28

CPC分类号： H04B10/5053 ,  G02F1/0121 ,  G02F2001/212 ,  G02F2201/58 ,  G02F2203/21 ,  H04B10/505 ,  H04B10/50577 ,  H04B10/5561

摘要： The improved quadrature phase shift keying modulator has a structure such that the average light output power of phase-shift keying modulation light output from the combining unit is changed according to the phase difference between the first and the second optical signal after being combined by means of applying driving signals different in eye crossing percentage by the first modulator and the second modulator, respectively, and has a power monitor monitoring the average light output power of quadrature phase-shift keying modulated light and a phase shift controlling unit which performs feedback control of the phase shift amount in the phase shifting unit based on the average light output power monitored by the power monitor.

摘要翻译： 改进的正交相移键控调制器具有这样的结构，使得从组合单元输出的相移键控调制光的平均光输出功率根据第一和第二光信号之间的相位差在通过 通过第一调制器和第二调制器分别施加与眼睛交叉百分比不同的驱动信号，并且具有监视正交相移键控调制光的平均光输出功率的功率监视器和执行正交相移键控调制光的相位偏移控制单元的反相控制 基于由功率监视器监视的平均光输出功率，移相单元中的相移量。

公开(公告)号：US20090047028A1

公开(公告)日：2009-02-19

申请号：US12234931

申请日：2008-09-22

申请人： Takafumi TERAHARA ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura

发明人： Takafumi TERAHARA ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura

IPC分类号： H04B10/04

CPC分类号： H04B10/5053 ,  G02F1/0121 ,  G02F2001/212 ,  G02F2201/58 ,  G02F2203/21 ,  H04B10/505 ,  H04B10/50577 ,  H04B10/5561

摘要： The improved quadrature phase shift keying modulator has a structure such that the average light output power of phase-shift keying modulation light output from the combining unit is changed according to the phase difference between the first and the second optical signal after being combined by means of applying driving signals different in eye crossing percentage by the first modulator and the second modulator, respectively, and has a power monitor monitoring the average light output power of quadrature phase-shift keying modulated light and a phase shift controlling unit which performs feedback control of the phase shift amount in the phase shifting unit based on the average light output power monitored by the power monitor.

摘要翻译： 改进的正交相移键控调制器具有这样的结构，使得从组合单元输出的相移键控调制光的平均光输出功率根据第一和第二光信号之间的相位差在通过 通过第一调制器和第二调制器分别施加与眼睛交叉百分比不同的驱动信号，并且具有监视正交相移键控调制光的平均光输出功率的功率监视器和执行正交相移键控调制光的相位偏移控制单元的反相控制 基于由功率监视器监视的平均光输出功率，移相单元中的相移量。

公开(公告)号：US07860408B2

公开(公告)日：2010-12-28

申请号：US11651591

申请日：2007-01-10

申请人： Akihiko Isomura ,  Jens Rasmussen ,  Takafumi Terahara ,  Kentaro Nakamura ,  Takeshi Hoshida ,  George Ishikawa ,  Hiroshi Onaka ,  Morio Wada ,  Hiroyuki Matsuura ,  Akira Miura ,  Yasuyuki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

发明人： Akihiko Isomura ,  Jens Rasmussen ,  Takafumi Terahara ,  Kentaro Nakamura ,  Takeshi Hoshida ,  George Ishikawa ,  Hiroshi Onaka ,  Morio Wada ,  Hiroyuki Matsuura ,  Akira Miura ,  Yasuyuki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

IPC分类号： H04B10/06

CPC分类号： G02F1/225 ,  G02F2203/21 ,  H04L1/0047 ,  H04L27/223

摘要： An interferometer for demodulating a differential M-phase shift keying signal includes a PLC type interferometer main body, a heating portion that heats the PLC type interferometer main body, and an intermediate member having a higher stiffness than that of the PLC type interferometer main body, for bonding the PLC type interferometer main body and the heating portion with each other while being sandwiched therebetween. A linear expansion coefficient difference between the PLC type interferometer main body and the intermediate member is equal to or smaller than 4.5×10−6/° C., and a thermal conductivity difference between the PLC type interferometer main body and the intermediate member is equal to or larger than 10 W/mK. A phase of an optical signal flowing through the interferometer is adjusted by using the heating portion and a second heating portion.

摘要翻译： 用于解调差分M相移键控信号的干涉仪包括PLC型干涉仪主体，加热PLC型干涉仪主体的加热部分和具有比PLC型干涉仪主体更高刚度的中间部件， 用于将PLC型干涉仪主体和加热部分夹在两者之间彼此粘合。 PLC型干涉仪主体与中间构件之间的线膨胀系数差等于或小于4.5×10-6 /℃，PLC型干涉仪主体与中间构件之间的热导率差相等 至10W / mK以上。 通过使用加热部和第二加热部来调节流过干涉仪的光信号的相位。

公开(公告)号：US20070177151A1

公开(公告)日：2007-08-02

申请号：US11651591

申请日：2007-01-10

申请人： Akihiko Isomura ,  Jens Rasmussen ,  Takafumi Terahara ,  Kentaro Nakamura ,  Takeshi Hoshida ,  George Ishikawa ,  Hiroshi Onaka ,  Morio Wada ,  Hiroyuki Matsuura ,  Akira Miura ,  Yasuyyki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

发明人： Akihiko Isomura ,  Jens Rasmussen ,  Takafumi Terahara ,  Kentaro Nakamura ,  Takeshi Hoshida ,  George Ishikawa ,  Hiroshi Onaka ,  Morio Wada ,  Hiroyuki Matsuura ,  Akira Miura ,  Yasuyyki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

IPC分类号： G01B9/02

CPC分类号： G02F1/225 ,  G02F2203/21 ,  H04L1/0047 ,  H04L27/223

摘要： An interferometer for demodulating a differential M-phase shift keying signal includes a PLC type interferometer main body, a heating portion that heats the PLC type interferometer main body, and an intermediate member having a higher stiffness than that of the PLC type interferometer main body, for bonding the PLC type interferometer main body and the heating portion with each other while being sandwiched therebetween. A linear expansion coefficient difference between the PLC type interferometer main body and the intermediate member is equal to or smaller than 4.5×10−6/° C., and a thermal conductivity difference between the PLC type interferometer main body and the intermediate member is equal to or larger than 10 W/mK. A phase of an optical signal flowing through the interferometer is adjusted by using the heating portion and a second heating portion.

摘要翻译： 用于解调差分M相移键控信号的干涉仪包括PLC型干涉仪主体，加热PLC型干涉仪主体的加热部分和具有比PLC型干涉仪主体更高刚度的中间部件， 用于将PLC型干涉仪主体和加热部分夹在两者之间彼此粘合。 PLC型干涉仪主体与中间部件之间的线膨胀系数差等于或小于4.5×10 -6 /℃，PLC型干涉仪主体之间的热导率差 中间部件为10W / m·K以上。 通过使用加热部和第二加热部来调节流过干涉仪的光信号的相位。