公开(公告)号：US08244138B2

公开(公告)日：2012-08-14

申请号：US12071984

申请日：2008-02-28

申请人： Takeshi Hoshida ,  Jens Rasmussen

发明人： Takeshi Hoshida ,  Jens Rasmussen

IPC分类号： H04B10/00

CPC分类号： H04J14/06 ,  H04B10/532

摘要： By using low-frequency signals, an optical transmitting unit modulates one of a wavelength, a transmission timing, and an intensity of light as a carrier wave. A polarization multiplexer synthesizes the output light signals, modulated by the optical transmitting unit, in polarization states orthogonal to each other and generates polarization-multiplexing signals. A polarization splitter splits by extracting two orthogonal polarization components from the polarization-multiplexing signals. The polarization states of the polarization-multiplexing signals are controlled by a polarization controller in an optical receiving unit. A band-pass filter extracts components transmitting through passbands from output signals of the optical receiving unit and outputs an intensity of the components. Based on the intensity output from the filter, a controlling circuit generates feedback control signals for maximizing a ratio of the components of the low-frequency signals and by using the feedback control signals, the polarization controller controls the polarization states of the optical multiplexing signals.

摘要翻译： 通过使用低频信号，光发送单元调制作为载波的波长，发送定时和光强度中的一个。 偏振复用器以由彼此正交的极化状态合成由光发射单元调制的输出光信号，并产生偏振复用信号。 偏振分离器通过从偏振复用信号中提取两个正交偏振分量来分离。 偏振复用信号的偏振状态由光接收单元中的偏振控制器控制。 带通滤波器提取从光接收单元的输出信号通过通带传输的分量，并输出分量的强度。 基于来自滤波器的强度输出，控制电路产生用于使低频信号的分量的比率最大化的反馈控制信号，并且通过使用反馈控制信号，偏振控制器控制光复用信号的偏振状态。

公开(公告)号：US08249464B2

公开(公告)日：2012-08-21

申请号：US12719258

申请日：2010-03-08

申请人： Shoichiro Oda ,  Takeshi Hoshida ,  Hisao Nakashima ,  Takahito Tanimura ,  Yuichi Akiyama

发明人： Shoichiro Oda ,  Takeshi Hoshida ,  Hisao Nakashima ,  Takahito Tanimura ,  Yuichi Akiyama

IPC分类号： H04B10/00 ,  H04B10/06 ,  H04J14/02

CPC分类号： H04B10/614 ,  H04B10/60 ,  H04B10/63

摘要： In-phase signal light and quadrature-phase signal light obtained by mixing input light and local light with each other are converted into digital signals. The quality of a signal to be received is monitored with reference to information obtained through digital signal processing, and the power ratio between the input signal light and the local light that are to be mixed with each other are controlled on the basis of the result of the monitoring.

摘要翻译： 通过将输入光和局部光彼此混合而获得的同相信号光和正交相位信号光被转换为数字信号。 参照通过数字信号处理获得的信息来监视要接收的信号的质量，并且基于将要混合的输入信号光和本地光之间的功率比来控制 监控。

公开(公告)号：US07773283B2

公开(公告)日：2010-08-10

申请号：US12058406

申请日：2008-03-28

申请人： Toshiki Tanaka ,  Hideyuki Miyata ,  Yuichi Akiyama ,  Takeshi Hoshida

发明人： Toshiki Tanaka ,  Hideyuki Miyata ,  Yuichi Akiyama ,  Takeshi Hoshida

IPC分类号： G02B26/00

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5162 ,  H04B10/5167 ,  H04B10/5561

摘要： According to an aspect of an embodiment, an optical modulation device includes a Mach-Zehnder modulator and a controller. The Mach-Zehnder modulator is supplied a drive signal and a bias voltage. The Mach-Zehnder modulator modulates inputted light on the bases of the drive signal and the bias voltage. The drive signal selectively is superimposes a predetermined frequency signal. The bias voltage selectively is superimposes the predetermined frequency signal. The controller selects a superimposing target which is the drive signal or the bias voltage so as to change modulation formats.

摘要翻译： 根据实施例的一个方面，光调制装置包括马赫 - 曾德调制器和控制器。 马赫曾德尔调制器提供驱动信号和偏置电压。 Mach-Zehnder调制器根据驱动信号和偏置电压调制输入的光。 驱动信号选择性地叠加预定的频率信号。 选择性地将偏置电压叠加在预定频率信号上。 控制器选择作为驱动信号或偏置电压的叠加目标，以便改变调制格式。

公开(公告)号：US07505414B2

公开(公告)日：2009-03-17

申请号：US10992829

申请日：2004-11-22

申请人： Hisao Nakashima ,  Takeshi Hoshida ,  Yuichi Akiyama ,  Takafumi Terahara

发明人： Hisao Nakashima ,  Takeshi Hoshida ,  Yuichi Akiyama ,  Takafumi Terahara

IPC分类号： H04L12/28

CPC分类号： H04L41/145

摘要： Linear networks are divided into a plurality of regeneration repeating sections which have nodes having regeneration repeaters arranged therein at both ends, devices such as linear repeaters or OADMs are arranged at the nodes positioned in the regeneration repeating sections, a plurality of assumed paths assumed as a result of arranging the devices are extracted in the regeneration repeating sections, and transmission permission/inhibition is determined transmission permission/inhibition is displayed to allow a user to perform settings again.

摘要翻译： 线性网络被分成多个再生重复部分，其具有在其两端布置有再生中继器的节点，诸如线性中继器或OADM的设备被布置在位于再生重复部分中的节点处，多个假定路径被假定为 在再生重复部分中抽出装置的结果，对每个假设路径确定发送允许/禁止，然后显示所确定的发送允许/禁止以允许用户再次执行设置。

公开(公告)号：US20060193638A1

公开(公告)日：2006-08-31

申请号：US11316961

申请日：2005-12-27

申请人： Yuichi Akiyama ,  Takafumi Terahara ,  Takeshi Hoshida ,  Hisao Nakashima

发明人： Yuichi Akiyama ,  Takafumi Terahara ,  Takeshi Hoshida ,  Hisao Nakashima

IPC分类号： H04B10/12

CPC分类号： H04B10/2513

摘要： The present invention discloses a design method of wavelength dispersion compensation of a desired link that is extracted from an optical network, the link including two or more spans, and two or more nodes (N1, N4) that are equipped with an add/drop function, as shown in FIG. 2. All residual dispersion ranges of paths that reach corresponding nodes are adjusted to fall within predetermined tolerable residual dispersion ranges that are set up for all the paths of the link by adjusting wavelength dispersion compensators provided to each of the spans.

摘要翻译： 本发明公开了一种从光网络提取的期望链路的波长色散补偿的设计方法，包括两个或多个跨度的链路，以及两个或更多个节点（N 1，N 4），其配备有添加/ drop功能，如图3所示。 通过调整提供给每个跨度的波长色散补偿器，到达对应节点的路径的所有残余色散范围被调整为落在通过链路的所有路径设置的预定的可容忍残余色散范围内。

公开(公告)号：US07684713B2

公开(公告)日：2010-03-23

申请号：US11593591

申请日：2006-11-07

申请人： Yoshikazu Terayama ,  Noriaki Mizuguchi ,  Eiji Ishikawa ,  Takashi Toyomaki ,  Kenichi Kaburagi ,  Takeshi Hoshida ,  Jens Rasmussen ,  Akihiko Isomura

发明人： Yoshikazu Terayama ,  Noriaki Mizuguchi ,  Eiji Ishikawa ,  Takashi Toyomaki ,  Kenichi Kaburagi ,  Takeshi Hoshida ,  Jens Rasmussen ,  Akihiko Isomura

IPC分类号： H04B10/00

CPC分类号： H04B10/66

摘要： A calculation processing unit controls temperature of a Peltier device based on a slope of a waveform obtained by subtracting a waveform of a B-arm monitoring signal from a waveform of an A-arm monitoring signal and a value obtained by subtracting a value B of the B-arm monitoring signal from a value A of the A-arm monitoring signal. Similarly, the calculation processing unit controls a phase of the A-arm and a phase of the B-arm. An A-arm side micro-controller controls temperature of an A-arm side heater 22 based on the value of the A-arm monitoring signal, and controls the phase of the A-arm. A B-arm side micro-controller controls temperature of a B-arm side heater based on the value B of the B-arm monitoring signal, and controls the phase of the B-arm.

摘要翻译： 计算处理单元基于通过从A臂监视信号的波形中减去B臂监视信号的波形而获得的波形的斜率，以及通过从A臂监视信号的波形中减去B的值得到的值来控制珀耳帖装置的温度 B臂监控信号从A臂A值监控信号。 类似地，计算处理单元控制A臂的相位和B臂的相位。 A臂侧微型控制器基于A臂监视信号的值来控制A臂侧加热器22的温度，并且控制A臂的相位。 B臂侧微控制器基于B臂监控信号的值B控制B臂侧加热器的温度，并控制B臂的相位。

公开(公告)号：US20080232816A1

公开(公告)日：2008-09-25

申请号：US12071984

申请日：2008-02-28

申请人： Takeshi Hoshida ,  Jens Rasmussen

发明人： Takeshi Hoshida ,  Jens Rasmussen

IPC分类号： H04B10/00 ,  H04B10/04 ,  H04B10/06

CPC分类号： H04J14/06 ,  H04B10/532

摘要： By using low-frequency signals, an optical transmitting unit modulates one of a wavelength, a transmission timing, and an intensity of light as a carrier wave. A polarization multiplexer synthesizes the output light signals, modulated by the optical transmitting unit, in polarization states orthogonal to each other and generates polarization-multiplexing signals. A polarization splitter splits by extracting two orthogonal polarization components from the polarization-multiplexing signals. The polarization states of the polarization-multiplexing signals are controlled by a polarization controller in an optical receiving unit. A band-pass filter extracts components transmitting through passbands from output signals of the optical receiving unit and outputs an intensity of the components. Based on the intensity output from the filter, a controlling circuit generates feedback control signals for maximizing a ratio of the components of the low-frequency signals and by using the feedback control signals, the polarization controller controls the polarization states of the optical multiplexing signals.

摘要翻译： 通过使用低频信号，光发送单元调制作为载波的波长，发送定时和光强度中的一个。 偏振复用器以由彼此正交的极化状态合成由光发射单元调制的输出光信号，并产生偏振复用信号。 偏振分离器通过从偏振复用信号中提取两个正交偏振分量来分离。 偏振复用信号的偏振状态由光接收单元中的偏振控制器控制。 带通滤波器提取从光接收单元的输出信号通过通带传输的分量，并输出分量的强度。 基于来自滤波器的强度输出，控制电路产生用于使低频信号的分量的比率最大化的反馈控制信号，并且通过使用反馈控制信号，偏振控制器控制光复用信号的偏振状态。

公开(公告)号：US07907324B2

公开(公告)日：2011-03-15

申请号：US12292471

申请日：2008-11-19

申请人： Takeshi Hoshida ,  Yuichi Akiyama

发明人： Takeshi Hoshida ,  Yuichi Akiyama

IPC分类号： G02F1/01 ,  G02B26/00

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/541

摘要： The optical modulator branches an input light into (2×N) lights in an optical branching section, and then phase modulates each of the branched lights in (2×N) phase modulating sections, and couples the phase modulated lights in an optical coupling section and generates a quadrature amplitude modulated (QAM) signal light having a 4N value. At this time, a relative difference of optical phases of the phase modulated lights is variably adjusted by an optical phase adjusting section. Moreover, a power ratio of the phase modulated lights is variably adjusted with an optical power adjusting section. As a result, it is possible to output 4N QAM signal light, with good signal quality.

摘要翻译： 光调制器将输入光分支到（2×N）个光分支部分中，然后对（2×N）个相位调制部分中的每个分支光进行相位调制，并将相位调制光耦合到光耦合部分 并产生具有4N值的正交幅度调制（QAM）信号光。 此时，通过光学相位调整部可变地调整相位调制光的相位差。 此外，利用光功率调节部可变地调节相位调制光的功率比。 因此，可以输出4N QAM信号光，信号质量好。

公开(公告)号：US20080080872A1

公开(公告)日：2008-04-03

申请号：US11740954

申请日：2007-04-27

申请人： Toshiki Tanaka ,  Takeshi Hoshida ,  Hisao Nakashima ,  Yuichi Akiyama

发明人： Toshiki Tanaka ,  Takeshi Hoshida ,  Hisao Nakashima ,  Yuichi Akiyama

IPC分类号： H04B10/04

CPC分类号： H04B10/50572 ,  H04B10/505 ,  H04B10/50575 ,  H04B10/564

摘要： A signal Data1 and Data2 are output from a DQPSK signal source. The output signal is input to the modulator drivers 1 and 2 of the differential output. A drive signal is applied from the drivers 1 and 2 to a modulator, and modulated light is output. An optical coupler 20 branches modulator output, and a power monitor 21 detects the power of the branched light. A detection result is transmitted to an amplitude control unit 22. The amplitude control unit 22 adjusts the amplitude of the drivers 1 and 2 such that the detection result of the power monitor 21 can be the maximum.

摘要翻译： 从DQPSK信号源输出信号数据1和数据2。 输出信号被输入到差分输出的调制器驱动器1和2。 将驱动信号从驱动器1和2施加到调制器，并输出调制光。 光耦合器20分支调制器输出，功率监视器21检测分支光的功率。 检测结果被发送到振幅控制单元22。 振幅控制单元22调节驱动器1,2的振幅，使得功率监视器21的检测结果最大。

公开(公告)号：US20080239448A1

公开(公告)日：2008-10-02

申请号：US12058406

申请日：2008-03-28

申请人： Toshiki Tanaka ,  Hideyuki Miyata ,  Yuichi Akiyama ,  Takeshi Hoshida

发明人： Toshiki Tanaka ,  Hideyuki Miyata ,  Yuichi Akiyama ,  Takeshi Hoshida

IPC分类号： G02F1/00

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5162 ,  H04B10/5167 ,  H04B10/5561

摘要： According to an aspect of an embodiment, an optical modulation device includes a Mach-Zehnder modulator and a controller. The Mach-Zehnder modulator is supplied a drive signal and a bias voltage. The Mach-Zehnder modulator modulates inputted light on the bases of the drive signal and the bias voltage. The drive signal selectively is superimposes a predetermined frequency signal. The bias voltage selectively is superimposes the predetermined frequency signal. The controller selects a superimposing target which is the drive signal or the bias voltage so as to change modulation formats.

摘要翻译： 根据实施例的一个方面，光调制装置包括马赫 - 曾德调制器和控制器。 马赫曾德尔调制器提供驱动信号和偏置电压。 Mach-Zehnder调制器根据驱动信号和偏置电压调制输入的光。 驱动信号选择性地叠加预定的频率信号。 选择性地将偏置电压叠加在预定频率信号上。 控制器选择作为驱动信号或偏置电压的叠加目标，以便改变调制格式。