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：US07711270B2

公开(公告)日：2010-05-04

申请号：US11316941

申请日：2005-12-27

申请人： Hiroki Ooi ,  Takafumi Terahara ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura ,  Yuichi Akiyama

发明人： Hiroki Ooi ,  Takafumi Terahara ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura ,  Yuichi Akiyama

IPC分类号： H04B10/02 ,  H04J14/02

CPC分类号： H04J14/0294 ,  H04B10/032 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/022 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286 ,  H04J14/0295

摘要： The optical node connects N networks to each other (where N is an integer larger than one). Each of the N networks respectively includes a first transmission path and a second transmission path. The optical node includes a switching unit that connects the first transmission path of one network of the N networks to other (N−1) networks; a failure detector that detects failure in the first transmission path of the network; and a control unit that causes the switching unit to connect the second transmission path of the network to the other (N−1) networks when the failure is detected.

摘要翻译： 光节点将N个网络相互连接（其中N是大于1的整数）。 N个网络中的每一个分别包括第一传输路径和第二传输路径。 光节点包括将N个网络的一个网络的第一传输路径连接到其他（N-1）个网络的交换单元; 检测网络的第一传输路径中的故障的故障检测器; 以及控制单元，当检测到故障时，使得切换单元将网络的第二传输路径连接到另一（N-1）网络。

公开(公告)号：US07792428B2

公开(公告)日：2010-09-07

申请号：US11204184

申请日：2005-08-16

申请人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura

发明人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura

IPC分类号： H04B10/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/0075 ,  H04Q2011/0083

摘要： A core unit arranged in a transmission path includes a through path for causing an input signal to an input port to pass through to an output port, a drop-side port 25a that drops the input signal having a predetermined wavelength, and an add-side port 25b that adds channel having a predetermined wavelength to the input light.

摘要翻译： 布置在传输路径中的核心单元包括用于使输入信号到输入端口通过输出端口的通路，将具有预定波长的输入信号丢弃的下降侧端口25a和相加侧 端口25b，其向输入光添加具有预定波长的信道。

公开(公告)号：US08131152B2

公开(公告)日：2012-03-06

申请号：US12910497

申请日：2010-10-22

申请人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura

发明人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura

IPC分类号： H04B10/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/0075 ,  H04Q2011/0083

摘要： An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one input port receiving the outputted optical signal from the first optical coupler and a plurality of output ports, demultiplexing a plurality of arbitrarily selected multiplexed wavelengths from the received optical signal, a second wavelength selective switch, having a plurality of input ports, each input port receiving a different optical signal and one output port, multiplexing a plurality of arbitrarily selected wavelength signals on the plurality of input ports, and a second optical coupler receiving the optical signal output from the wavelength blocker and multiplexed wavelength signal from the second wavelength selective switch.

摘要翻译： 光分插复用器包括接收包括多个复用波长的光信号的第一光耦合器，接收来自第一光耦合器的光信号的波长阻挡器，以及阻挡多个复用波长的至少一个波长;第一 波长选择开关，具有从所述第一光耦合器接收输出的光信号的一个输入端口和多个输出端口，从所接收的光信号中解复用多个任意选择的复用波长;第二波长选择开关，具有多个输入 端口，每个输入端口接收不同的光信号和一个输出端口，在多个输入端口上复用多个任意选择的波长信号，以及接收从波长阻挡器输出的光信号的第二光耦合器和来自 第二波长选择开关。

公开(公告)号：US07853148B2

公开(公告)日：2010-12-14

申请号：US12371278

申请日：2009-02-13

申请人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura

发明人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi ,  Jens C. Rasmussen ,  Akira Miura ,  Akihiko Isomura

IPC分类号： H04B10/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/0075 ,  H04Q2011/0083

摘要： An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one input port receiving the outputted optical signal from the first optical coupler and a plurality of output ports, demultiplexing a plurality of arbitrarily selected multiplexed wavelengths from the received optical signal, a second wavelength selective switch, having a plurality of input ports, each input port receiving a different optical signal and one output port, multiplexing a plurality of arbitrarily selected wavelength signals on the plurality of input ports, and a second optical coupler receiving the optical signal output from the wavelength blocker and multiplexed wavelength signal from the second wavelength selective switch.

摘要翻译： 光分插复用器包括接收包括多个复用波长的光信号的第一光耦合器，接收来自第一光耦合器的光信号的波长阻挡器，以及阻挡多个复用波长的至少一个波长;第一 波长选择开关，具有从所述第一光耦合器接收输出的光信号的一个输入端口和多个输出端口，从所接收的光信号中解复用多个任意选择的复用波长;第二波长选择开关，具有多个输入 端口，每个输入端口接收不同的光信号和一个输出端口，在多个输入端口上复用多个任意选择的波长信号，以及接收从波长阻挡器输出的光信号的第二光耦合器和来自 第二波长选择开关。

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：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：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。