公开(公告)号：US20080056733A1

公开(公告)日：2008-03-06

申请号：US11605370

申请日：2006-11-29

申请人： Akihiko Isomura ,  Jens C. Rasmussen ,  Zhenning Tao ,  Noriaki Mizuguchi ,  Kenichi Kaburagi

发明人： Akihiko Isomura ,  Jens C. Rasmussen ,  Zhenning Tao ,  Noriaki Mizuguchi ,  Kenichi Kaburagi

IPC分类号： H04B10/06

CPC分类号： H04B10/677

摘要： Branches are grouped into a group 1 including first and second branches, and a group 2 including third and fourth branches. The signal after being passed through a dual pin photodiode in one branch included in the group 1 and being at the earlier stage of a CDR circuit is obtained. Also, from the later stage of the CDR circuit in the other branch in the group 1 is obtained. The obtained signals are passed through low pass filters, and an average value over a plurality of symbols is obtained. The signal from the earlier stage of the CDR circuit is multiplied by the signal from the later stage, and they are averaged. The obtained value reflects the phase difference of the two delay interferometers in the group 1. The group 2 is monitored by using the same method.

摘要翻译： 分支被分组成包括第一和第二分支的组1，以及包括第三和第四分支的组2。 获得包含在组1中并处于CDR电路的较早阶段的一个分支中的双引脚光电二极管的信号。 此外，从组1中的另一个分支中的CDR电路的后期获得。 所获得的信号通过低通滤波器，并获得多个符号的平均值。 来自CDR电路的较早阶段的信号乘以来自后期的信号，并将它们进行平均。 所获得的值反映了组1中的两个延迟干涉仪的相位差。 通过使用相同的方法监视组2。

公开(公告)号：US07877025B2

公开(公告)日：2011-01-25

申请号：US11994649

申请日：2006-07-07

申请人： Zhenning Tao ,  Jens C. Rasmussen ,  Akihiko Isomura

发明人： Zhenning Tao ,  Jens C. Rasmussen ,  Akihiko Isomura

IPC分类号： H04B10/06 ,  H04B10/04

CPC分类号： H04B10/69 ,  H04B10/677

摘要： I branch is provided with a first interferometer, a first balanced optical detector, and a first data recovery circuit. Q branch is provided with a second interferometer, a second balanced optical detector and a second data recovery circuit. In I branch, a mixer multiples input signal of the first data recovery circuit with output signal of the second recovery circuit. An averaging circuit averages output signal of the mixer. In Q branch, a mixer multiples input signal of the second data recovery circuit with output signal of the first recovery circuit. An averaging circuit averages output signal of the mixer. A first phase control apparatus controls the phase of a phase shifter comprised in the first interferometer based on the output signal of the averaging circuit. A second phase control apparatus, in the same manner, controls the phase of a phase shifter comprised in the second interferometer.

摘要翻译： I分支设置有第一干涉仪，第一平衡光学检测器和第一数据恢复电路。 Q分支设置有第二干涉仪，第二平衡光学检测器和第二数据恢复电路。 在I分支中，混频器将第一数据恢复电路的输入信号与第二恢复电路的输出信号相乘。 平均电路对混频器的输出信号进行平均。 在Q分支中，混频器将第二数据恢复电路的输入信号与第一恢复电路的输出信号相乘。 平均电路对混频器的输出信号进行平均。 第一相位控制装置基于平均电路的输出信号来控制包括在第一干涉仪中的移相器的相位。 以相同的方式，第二相位控制装置控制包括在第二干涉仪中的移相器的相位。

公开(公告)号：US07676162B2

公开(公告)日：2010-03-09

申请号：US11605370

申请日：2006-11-29

申请人： Akihiko Isomura ,  Jens C. Rasmussen ,  Zhenning Tao ,  Noriaki Mizuguchi ,  Kenichi Kaburagi

发明人： Akihiko Isomura ,  Jens C. Rasmussen ,  Zhenning Tao ,  Noriaki Mizuguchi ,  Kenichi Kaburagi

IPC分类号： H04B10/06 ,  H04B10/12

CPC分类号： H04B10/677

摘要： Branches are grouped into a group 1 including first and second branches, and a group 2 including third and fourth branches. The signal after being passed through a dual pin photodiode in one branch included in the group 1 and being at the earlier stage of a CDR circuit is obtained. Also, from the later stage of the CDR circuit in the other branch in the group 1 is obtained. The obtained signals are passed through low pass filters, and an average value over a plurality of symbols is obtained. The signal from the earlier stage of the CDR circuit is multiplied by the signal from the later stage, and they are averaged. The obtained value reflects the phase difference of the two delay interferometers in the group 1. The group 2 is monitored by using the same method.

摘要翻译： 分支被分组成包括第一和第二分支的组1，以及包括第三和第四分支的组2。 获得包含在组1中并处于CDR电路的较早阶段的一个分支中的双引脚光电二极管的信号。 此外，从组1中的另一个分支中的CDR电路的后期获得。 所获得的信号通过低通滤波器，并获得多个符号的平均值。 来自CDR电路的较早阶段的信号乘以来自后期的信号，并将它们进行平均。 所获得的值反映了组1中的两个延迟干涉仪的相位差。通过使用相同的方法来监视组2。

公开(公告)号：US20090034967A1

公开(公告)日：2009-02-05

申请号：US11994649

申请日：2006-07-07

申请人： Zhenning Tao ,  Jens C. Rasmussen ,  Akihiko Isomura

发明人： Zhenning Tao ,  Jens C. Rasmussen ,  Akihiko Isomura

IPC分类号： H04B10/08

CPC分类号： H04B10/69 ,  H04B10/677

摘要： I branch is provided with a first interferometer, a first balanced optical detector, and a first data recovery circuit. Q branch is provided with a second interferometer, a second balanced optical detector and a second data recovery circuit. In I branch, a mixer multiples input signal of the first data recovery circuit with output signal of the second recovery circuit. An averaging circuit averages output signal of the mixer. In Q branch, a mixer multiples input signal of the second data recovery circuit with output signal of the first recovery circuit. An averaging circuit averages output signal of the mixer. A first phase control apparatus controls the phase of a phase shifter comprised in the first interferometer based on the output signal of the averaging circuit. A second phase control apparatus, in the same manner, controls the phase of a phase shifter comprised in the second interferometer.

摘要翻译： I分支设置有第一干涉仪，第一平衡光学检测器和第一数据恢复电路。 Q分支设置有第二干涉仪，第二平衡光学检测器和第二数据恢复电路。 在I分支中，混频器将第一数据恢复电路的输入信号与第二恢复电路的输出信号相乘。 平均电路对混频器的输出信号进行平均。 在Q分支中，混频器将第二数据恢复电路的输入信号与第一恢复电路的输出信号相乘。 平均电路对混频器的输出信号进行平均。 第一相位控制装置基于平均电路的输出信号来控制包括在第一干涉仪中的移相器的相位。 以相同的方式，第二相位控制装置控制包括在第二干涉仪中的移相器的相位。

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：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：US07616900B2

公开(公告)日：2009-11-10

申请号：US10898286

申请日：2004-07-26

申请人： Akihiko Isomura ,  Jens C. Rasmussen ,  George Ishikawa

发明人： Akihiko Isomura ,  Jens C. Rasmussen ,  George Ishikawa

IPC分类号： H04B10/00

CPC分类号： H04B10/2569 ,  H04J14/0221 ,  H04J14/06

摘要： By comprising a unit 2 making the adjustment related to degradation compensation of a plurality of signals with each wavelength made after multiplexing the signals, a unit 3 multiplexing the outputs of a plurality of units 2, a unit 4 compensating for the waveform degradation of the output of the unit 3, a unit 5 selecting a component with one of a plurality of wavelengths from a part of the output of the unit 4 and a unit 6 detecting the degree of signal degradation from the output of the unit 5 and controlling the adjustment by the unit 2 corresponding to the selected frequency so as to reduce the degree, components disposed for each wavelength in an optical transmission system adopting a wavelength-division multiplexing method can be shared, and the size and cost of an compensator can be reduced.

摘要翻译： 通过包括进行与多路复用信号之后的每个波长的多个信号的劣化补偿相关的调整的单元2，多路复用多个单元2的输出的单元3，补偿输出的波形劣化的单元4 单元3，单元5从单元4的输出的一部分中选择具有多个波长中的一个的分量，以及单元6，其检测来自单元5的输出的信号劣化程度，并且通过 可以共用对应于所选频率的单元2以减少采用波分复用方法的光传输系统中为每个波长分配的分量，并且可以减小补偿器的尺寸和成本。

公开(公告)号：US20090148166A1

公开(公告)日：2009-06-11

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： H04J14/02

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：US20100278528A1

公开(公告)日：2010-11-04

申请号：US12662660

申请日：2010-04-27

申请人： Akihiko Isomura ,  Jens C. Rasmussen

发明人： Akihiko Isomura ,  Jens C. Rasmussen

IPC分类号： H04B10/08

CPC分类号： H04B10/6165 ,  H04B10/61 ,  H04B10/611 ,  H04L25/03038 ,  H04L27/223 ,  H04L2025/03477

摘要： A coherent optical receiver includes; a multiplexing section that multiplexes local oscillation light and received signal light, and outputs two pairs of lights with optical phases different to each other, a photoelectric converting section that executes differential photoelectric converting to convert the output lights from the multiplexing section into electric signals, an AD converting section that converts the respective electric signals output from the photoelectric converting section into digital signals, a digital signal processing section that compensates wavelength dispersion by subjecting the digital signals converted by the AD converting section to arithmetic processing using a digital filter, and then executes reception processing of data included in the received signal light, a monitoring section that monitors an intensity component in a predetermined band of the electric signals output from the photoelectric converting section, and a tap coefficient adjusting section that determines a tap coefficient of the digital filter according to a monitoring result obtained by the monitoring section.

摘要翻译： 相干光接收机包括： 多路复用局部振荡光和接收信号光，并输出具有彼此不同的光学相位的两对光;光电转换部，执行差分光电转换，将来自复用部的输出光转换为电信号; AD转换部分，其将从光电转换部分输出的各个电信号转换为数字信号;数字信号处理部分，其通过使用数字滤波器对由AD转换部分转换的数字信号进行算术处理来补偿波长色散，然后执行 接收处理包含在接收信号光中的数据的监视部分，监视从光电转换部分输出的电信号的预定频带中的强度分量的监视部分和确定d的抽头系数的抽头系数调整部分 根据监测部分得到的监测结果，进行数字滤波。