公开(公告)号：US20070196107A1

公开(公告)日：2007-08-23

申请号：US11438445

申请日：2006-05-23

申请人： Yutaka Takita

发明人： Yutaka Takita

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  G02B6/3586 ,  G02B6/359 ,  G02B6/3594 ,  H04J14/0221 ,  H04Q2011/0035 ,  H04Q2011/0049

摘要： In the present optical switching device, a reference light of a wavelength same as or in the vicinity of a wavelength of a signal light, is given from a wavelength-variable light source via each output side optical circulator to each pertinent output light path, and is propagated through each of the output light paths in a direction inverse to a propagation direction of the signal light, and passes through each optical amplifier to be sent to an optical switch module. Then, the power of the reference light which is led to each input side optical circulator from each input light path in accordance with the optical route setting by the optical switch module, is monitored by a reference light power monitor, and loss data is acquired by a control circuit using the monitoring result, so that the optical switch module is controlled in accordance with a control parameter corrected based on the loss data. Thus, it becomes possible to grasp accurately a loss characteristic of the optical switch module to perform the setting and switching of optical routes, and also, to compensate for a loss in the optical switch module while suppressing the waveform degradation of an output signal light to the minimum.

摘要翻译： 在本光学开关装置中，从波长可变光源经由每个输出侧光环行器向每个相关的输出光路提供波长与信号光波长相同或附近的参考光，并且 在与信号光的传播方向相反的方向上通过每个输出光路传播，并通过每个光放大器以发送到光开关模块。 然后，根据光开关模块设定的光路由从每个输入光路引导到每个输入侧光环行器的参考光的功率由参考光功率监视器监视，并且丢失数据通过 使用监视结果的控制电路，使得根据基于损失数据校正的控制参数来控制光学开关模块。 因此，可以准确地掌握光开关模块的损耗特性来执行光路的设置和切换，并且还可以在抑制输出信号光的波形劣化的同时补偿光开关模块的损耗 最小。

公开(公告)号：US07088491B2

公开(公告)日：2006-08-08

申请号：US10827328

申请日：2004-04-20

申请人： Yutaka Takita ,  Shigeki Watanabe ,  Fumio Futami

发明人： Yutaka Takita ,  Shigeki Watanabe ,  Fumio Futami

IPC分类号： G02F1/01

CPC分类号： H04B10/508 ,  G02F1/0311 ,  G02F2203/50

摘要： An apparatus and method generating an optical pulse of picosecond class (having a high duty ratio), which accurately and stably operates at an arbitrary repetition frequency, has a high OSNR, and is not restricted by an RF modulation frequency, are provided. New modulation spectrum components are generated by performing phase modulation for light output from a single wavelength laser light source with an optical phase modulator. The phases of the modulation spectrum components are aligned by a phase adjuster, so that a pulse wave in a time domain is generated.

摘要翻译： 提供了以任意重复频率精确稳定地操作的皮秒级（具有高占空比）的光脉冲的装置和方法具有高OSNR，并且不受RF调制频率的限制。 通过对具有光相位调制器的单个波长激光光源的光输出执行相位调制来产生新的调制频谱分量。 调制频谱分量的相位由相位调整器对准，从而产生时域中的脉冲波。

公开(公告)号：US20050047453A1

公开(公告)日：2005-03-03

申请号：US10809841

申请日：2004-03-26

申请人： Fumio Futami ,  Shigeki Watanabe ,  Yutaka Takita

发明人： Fumio Futami ,  Shigeki Watanabe ,  Yutaka Takita

IPC分类号： G02F1/13 ,  G02F1/00 ,  G02F1/365 ,  H04J14/02 ,  H01S3/10

CPC分类号： H04B10/506 ,  G02F1/00 ,  G02F2203/56 ,  H04J14/0221

摘要： A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence with a nonlinear medium. A modulator array extracts longitudinal mode components from the expanded spectrum, and modulates the extracted longitudinal mode components with modulation data. Lastly, the modulated longitudinal mode components are coupled and transmitted to a transmission line.

摘要翻译： 通过使从脉冲光源输出的脉冲波形成三阶以上的超高斯脉冲，并输入到频谱扩展装置，构成脉冲序列。 频谱扩展装置用非线性介质拓宽脉冲序列的频谱。 调制器阵列从扩展频谱中提取纵模分量，并用调制数据调制提取的纵模分量。 最后，调制的纵向模式分量被耦合并传输到传输线。

公开(公告)号：US20090290873A1

公开(公告)日：2009-11-26

申请号：US12320529

申请日：2009-01-28

申请人： Yutaka Takita ,  Susumu Kinoshita

发明人： Yutaka Takita ,  Susumu Kinoshita

IPC分类号： H04B10/20 ,  H04J14/02

CPC分类号： H04J14/025 ,  H04J3/1611 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286

摘要： An optical communicating apparatus that is connected to another optical communicating apparatus by a two-core optical transmission path includes: a one-core optical transmission path that passes an optical signal transmitted from an optical transmitter/receiver performing one-core bilateral communication and an optical signal transmitted to the optical transmitter/receiver in an opposite direction; a transmitting unit that transmits the optical signal transmitted from the optical transmitter/receiver through the one-core optical transmission path, to the other optical communicating apparatus through a first core of the two-core optical transmission path; and a receiving unit that receives the optical signal transmitted from the other communicating apparatus through a second core of the two-core optical transmission path, and passes the received optical signal to the one-core optical transmission path.

摘要翻译： 通过双芯光传输路径连接到另一光通信装置的光通信装置包括：通过从执行单核双向通信的光发射机/接收机发送的光信号的光纤传输路径和光纤 信号以相反的方向传输到光发射机/接收机; 发送单元，其通过所述单核心光传输路径将从所述光收发器发送的所述光信号通过所述双核光传输路径的第一核发送到所述另一光通信装置; 以及接收单元，其通过双芯光传输路径的第二核心接收从其他通信装置发送的光信号，并将接收到的光信号传递到单芯光传输路径。

公开(公告)号：US07613394B2

公开(公告)日：2009-11-03

申请号：US11438445

申请日：2006-05-23

申请人： Yutaka Takita

发明人： Yutaka Takita

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  G02B6/3586 ,  G02B6/359 ,  G02B6/3594 ,  H04J14/0221 ,  H04Q2011/0035 ,  H04Q2011/0049

摘要： In the present optical switching device, a reference light of a wavelength same as or in the vicinity of a wavelength of a signal light, is given from a wavelength-variable light source via each output side optical circulator to each pertinent output light path, and is propagated through each of the output light paths in a direction inverse to a propagation direction of the signal light, and passes through each optical amplifier to be sent to an optical switch module. Then, the power of the reference light which is led to each input side optical circulator from each input light path in accordance with the optical route setting by the optical switch module, is monitored by a reference light power monitor, and loss data is acquired by a control circuit using the monitoring result, so that the optical switch module is controlled in accordance with a control parameter corrected based on the loss data. Thus, it becomes possible to grasp accurately a loss characteristic of the optical switch module to perform the setting and switching of optical routes, and also, to compensate for a loss in the optical switch module while suppressing the waveform degradation of an output signal light to the minimum.

摘要翻译： 在本光学开关装置中，从波长可变光源经由每个输出侧光环行器向每个相关的输出光路提供波长与信号光波长相同或附近的参考光，并且 在与信号光的传播方向相反的方向上通过每个输出光路传播，并通过每个光放大器以发送到光开关模块。 然后，根据光开关模块设定的光路由从每个输入光路引导到每个输入侧光环行器的参考光的功率由参考光功率监视器监视，并且丢失数据通过 使用监视结果的控制电路，使得根据基于损失数据校正的控制参数来控制光学开关模块。 因此，可以准确地掌握光开关模块的损耗特性来执行光路的设置和切换，并且还可以在抑制输出信号光的波形劣化的同时补偿光开关模块的损耗 最小。

公开(公告)号：US07598781B2

公开(公告)日：2009-10-06

申请号：US11878792

申请日：2007-07-26

申请人： Yutaka Takita

发明人： Yutaka Takita

IPC分类号： H03B1/00

CPC分类号： G02F1/0516 ,  G02F1/035 ,  G02F1/313 ,  H03K17/04126 ,  H03K17/602

摘要： A capacitive load driving device applies a multi-level voltage to a capacitive load to drive the capacitive load. In the capacitive load driving device, a voltage control signal generator unit generates a voltage control signal. A voltage amplifier unit amplifies a voltage of the voltage control signal. A current amplifier unit amplifies a current of an output of the voltage amplifier unit to perform charging of the capacitive load. A falling control signal generator unit generates a falling pulse having a predetermined pulse width when a width of falling of the voltage control signal exceeds a predetermined value. A switching unit performs discharging of the capacitive load in response to the falling pulse received.

摘要翻译： 容性负载驱动装置将多电平电压施加到电容性负载以驱动电容性负载。 在电容性负载驱动装置中，电压控制信号发生器单元产生电压控制信号。 电压放大器单元放大电压控制信号的电压。 电流放大器单元放大电压放大器单元的输出的电流以进行电容性负载的充电。 当电压控制信号的下降宽度超过预定值时，下降控制信号发生器单元产生具有预定脉冲宽度的下降脉冲。 开关单元响应于接收到的下降脉冲来执行电容性负载的放电。

公开(公告)号：US20060222289A1

公开(公告)日：2006-10-05

申请号：US11194565

申请日：2005-08-02

申请人： Yutaka Takita ,  Yutaka Kai

发明人： Yutaka Takita ,  Yutaka Kai

IPC分类号： G02B6/35

CPC分类号： H04Q11/0005 ,  H04Q2011/0049

摘要： The present invention relates to an optical switch apparatus made to successively carry out the route switching with respect to frame signal light inputted through various paths while eliminating the dispersion of an output power value. In the optical switch apparatus, input side deflecting units are disposed in corresponding relation to a plurality of input ports and output side deflecting units are disposed in corresponding relation to a plurality of output ports. Each input side deflecting unit and each output side deflecting unit are constructed in a manner such that a plurality of optical deflecting elements made to deflect signal light in response to an electric field applied are arranged in a cascade fashion, and the optical deflecting element constituting the input side deflecting unit or the output side deflecting unit is made so as to variably adjust the level of signal light to be outputted from the output side deflecting unit to the output port.

摘要翻译： 光开关装置技术领域本发明涉及一种在消除输出功率值的偏差的同时，相对于通过各种路径输入的帧信号光依次进行路由切换的光开关装置。 在光开关装置中，输入侧偏转单元以与多个输入端口对应的关系设置，输出侧偏转单元以与多个输出端口对应的关系设置。 每个输入侧偏转单元和每个输出侧偏转单元被构造成使得响应于所施加的电场而使信号光偏转的多个光学偏转元件以级联的方式布置，并且光​​学偏转元件构成 输入侧偏转单元或输出侧偏转单元被制成为可变地调节从输出侧偏转单元输出到输出端口的信号光的电平。