公开(公告)号：US08179593B2

公开(公告)日：2012-05-15

申请号：US12406624

申请日：2009-03-18

申请人： Masaji Noguchi ,  Yutaka Kai ,  Setsuo Yoshida

发明人： Masaji Noguchi ,  Yutaka Kai ,  Setsuo Yoshida

IPC分类号： H01S5/00 ,  H03K3/01

CPC分类号： H03K19/018507

摘要： An optical-switch drive circuit including a driver unit that generates, in response to a control signal, an on/off signal for driving a semiconductor optical amplifier gate switch, and a buffer unit having a high input impedance and connected between an output terminal outputting the on/off signal and the semiconductor optical amplifier gate switch. In the optical-switch drive circuit the buffer unit may include a high-resistance voltage divider that is connected with the output terminal, and an operational amplifier that buffers, and provides to the semiconductor optical amplifier gate switch, a divided voltage of the voltage divider.

摘要翻译： 一种光开关驱动电路，包括驱动单元，该驱动单元响应于控制信号产生用于驱动半导体光放大器门极开关的导通/截止信号，以及具有高输入阻抗的缓冲单元，并连接在输出端 开关信号和半导体光放大器门极开关。 在光开关驱动电路中，缓冲单元可以包括与输出端连接的高电阻分压器和缓冲并向半导体光放大器门极开关提供分压电压的运算放大器 。

公开(公告)号：US20110050293A1

公开(公告)日：2011-03-03

申请号：US12926199

申请日：2010-11-01

申请人： Masaji Noguchi ,  Tomohiro Ueno ,  Yutaka Kai ,  Setsuo Yoshida

发明人： Masaji Noguchi ,  Tomohiro Ueno ,  Yutaka Kai ,  Setsuo Yoshida

IPC分类号： H03K3/00 ,  H01S5/20

CPC分类号： H04Q11/0005 ,  H03K19/00346 ,  H04Q2011/0013 ,  H04Q2011/0039

摘要： A driving circuit of a semiconductor optical amplifier type gate switch constituting a matrix optical switch is provided with an operation amplifier into which a driving signal is input and from which a current corresponding to the driving signal is output, an inductance element provided at an output terminal of the operation amplifier, and a circuit composed of a diode element and a resistor element connected in parallel and provided between the inductance element and the semiconductor optical amplifier.

摘要翻译： 构成矩阵光开关的半导体光放大型门极开关的驱动电路设置有输入驱动信号的运算放大器，输出与驱动信号对应的电流，设置在输出端子的电感元件 以及由并联连接并设置在电感元件和半导体光放大器之间的二极管元件和电阻元件构成的电路。

公开(公告)号：US07848600B2

公开(公告)日：2010-12-07

申请号：US11727632

申请日：2007-03-27

申请人： Masaji Noguchi ,  Tomohiro Ueno ,  Yutaka Kai ,  Setsuo Yoshida

发明人： Masaji Noguchi ,  Tomohiro Ueno ,  Yutaka Kai ,  Setsuo Yoshida

IPC分类号： G02F1/035

CPC分类号： H04Q11/0005 ,  H03K19/00346 ,  H04Q2011/0013 ,  H04Q2011/0039

摘要： A driving circuit of a semiconductor optical amplifier type gate switch constituting a matrix optical switch is provided with an operation amplifier into which a driving signal is input and from which a current corresponding to the driving signal is output, an inductance element provided at an output terminal of the operation amplifier, and a circuit composed of a diode element and a resistor element connected in parallel and provided between the inductance element and the semiconductor optical amplifier.

摘要翻译： 构成矩阵光开关的半导体光放大型门极开关的驱动电路设置有输入驱动信号的运算放大器，输出与驱动信号对应的电流，设置在输出端子的电感元件 以及由并联连接并设置在电感元件和半导体光放大器之间的二极管元件和电阻元件构成的电路。

公开(公告)号：US07546043B2

公开(公告)日：2009-06-09

申请号：US10785483

申请日：2004-02-25

申请人： Yutaka Kai ,  Hideyuki Miyata

发明人： Yutaka Kai ,  Hideyuki Miyata

IPC分类号： H04B10/06

CPC分类号： H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/022 ,  H04J14/0221 ,  H04J14/0283 ,  H04J14/0295 ,  H04J14/0297 ,  H04J14/0298

摘要： Signal light with a specific wavelength is transmitted and extracted from signal light multiplexed by a WDM method, and a light detection unit detects the signal light detected by an optical tunable filter, whose wavelength transmission characteristic varies depending on a control signal. An operation circuit generates information for designating a control signal needed to enable the optical tunable filter to extract signal light with a designated wavelength, based on the detected results of two segments of signal light located at each edge of a wavelength band obtained by shifting the wavelength transmission characteristic of the optical tunable filter from outside the wavelength band including all segments of the entire WDM signal. A driving circuit generates a control signal according to the designation information.

摘要翻译： 具有特定波长的信号光由通过WDM方式复用的信号光发送和提取，光检测单元检测由波长传输特性根据控制信号而变化的光可调谐滤波器检测到的信号光。 运算电路根据检测到的位于通过移位波长获得的波长带的每个边缘的信号光的两个段的检测结果，产生用于指定使光可调谐滤波器以指定波长提取信号光所需的控制信号的信息 来自包括整个WDM信号的所有段的波长带外的光可调滤波器的传输特性。 驱动电路根据指定信息生成控制信号。

公开(公告)号：US20090060506A1

公开(公告)日：2009-03-05

申请号：US12045870

申请日：2008-03-11

申请人： Koji Matsunaga ,  Yutaka Kai

发明人： Koji Matsunaga ,  Yutaka Kai

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0039 ,  H04Q2011/0045

摘要： An optical switch section that switches the path of an optical packet transmitted thereto and outputs the optical packet, and a control section that generates multiple switch control signals in accordance with the destination of an optical packet transmitted thereto, transmits the multiple control signals to the optical switch section through multiple signal transmission lines and controls the ON/OFF states of multiple optical switches are included, and delay measuring means for measuring a difference in delay time among the multiple signal transmission lines is provided. In this case, the control section adjusts the transmission times of the multiple switch control signals such that the difference in delay time measured by the delay measuring means can be cancelled and that the multiple switch control signals transmitted through the multiple signal transmission lines can arrive at the multiple optical switches simultaneously and transmits the multiple switch control signals.

摘要翻译： 一种光转换部分，其切换发送到其上的光学分组的路径并输出该光学分组;以及控制部分，其根据发送到其的光学分组的目的地产生多个切换控制信号，将该多个控制信号发送到光学 包括通过多个信号传输线路的开关部分并且控制多个光开关的ON / OFF状态，并且提供了用于测量多个信号传输线之间的延迟时间差的延迟测量装置。 在这种情况下，控制部分调整多个开关控制信号的传输时间，从而可以消除由延迟测量装置测量的延迟时间差，并且通过多个信号传输线传输的多个开关控制信号可以到达 多个光开关同时发送多个开关控制信号。

公开(公告)号：US07462812B2

公开(公告)日：2008-12-09

申请号：US12051425

申请日：2008-03-19

申请人： Yutaka Kai ,  Yasuhiko Aoki ,  Eric Gouardes ,  Yoshiaki Nakano

发明人： Yutaka Kai ,  Yasuhiko Aoki ,  Eric Gouardes ,  Yoshiaki Nakano

IPC分类号： H01J40/14 ,  H04J14/00

CPC分类号： H04Q11/0005 ,  H04Q2011/002 ,  H04Q2011/0039 ,  H04Q2011/0049

摘要： An optical switching system having a transmission node. The transmission node includes a bit pattern processing unit for processing a bit pattern of transmitted data to stabilize optical power of a frame signal light to be monitored and a frame signal light producing unit for producing frame signal light to be transmitted on the basis of the bit pattern processed by the bit pattern processing unit.

摘要翻译： 一种具有传输节点的光交换系统。 发送节点包括：位图案处理单元，用于处理发送数据的位模式以稳定要监视的帧信号光的光功率;以及帧信号发光单元，用于根据该位产生要发送的帧信号光 图案处理单元处理的图案。

公开(公告)号：US20080205888A1

公开(公告)日：2008-08-28

申请号：US12002763

申请日：2007-12-19

申请人： Masaji Noguchi ,  Tomohiro Ueno ,  Yutaka Kai ,  Setsuo Yoshida

发明人： Masaji Noguchi ,  Tomohiro Ueno ,  Yutaka Kai ,  Setsuo Yoshida

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H03D9/00 ,  H04Q2011/0011 ,  H04Q2011/0013 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039

摘要： A drive circuit is provided for a semiconductor optical amplifier type gate switch includes a first transmission path and a second transmission path. The first transmission path includes a common first sub-path between a signal source and a first node; and an individual second sub-path for each of a plurality of operational amplifiers between the first node and a corresponding one of the operational amplifiers. The second transmission path includes an individual third sub-path between each of the operational amplifiers and a second node; and a common fourth sub-path between the second node and the semiconductor optical amplifier type gate switches. Transmission delay times of all the individual second sub-paths are equal, and transmission delay times of all the individual third sub-paths are equal.

摘要翻译： 提供了一种用于半导体光放大器型栅极开关的驱动电路，其包括第一传输路径和第二传输路径。 第一传输路径包括信号源和第一节点之间的公共第一子路径; 以及用于第一节点和运算放大器中的相应一个之间的多个运算放大器中的每一个的单独的第二子路径。 第二传输路径包括每个运算放大器和第二节点之间的单独的第三子路径; 以及第二节点和半导体光放大器型栅极开关之间的公共第四子路径。 所有各个第二子路径的传输延迟时间相等，并且所有各个第三子路径的传输延迟时间相等。

公开(公告)号：US07366426B2

公开(公告)日：2008-04-29

申请号：US10787137

申请日：2004-02-27

申请人： Yutaka Kai ,  Hideyuki Miyata

发明人： Yutaka Kai ,  Hideyuki Miyata

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04J14/0205 ,  H04B10/572 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/022

摘要： A wavelength stabilizing filter has a wavelength transmission characteristic curve that has its peak in a wavelength located between a first continuous set band and a second continuous set band longer in wavelength than the first set band, and that linearly drops from the peak toward the shorter wavelength side than the first set band and also toward the longer wavelength side longer than the second set band. A control unit generates a control signal needed to enable an optical tunable filter to extract signal light with a predetermined wavelength from an inputted WDM signal, based on light transmitted through the wavelength stabilizing filter.

摘要翻译： 波长稳定滤波器具有波长传输特性曲线，波长传播特性曲线在位于第一连续设定波段和波长比第一设定波段长的第二连续设定波段之间的波长处具有峰值，并且从峰值朝向较短波长线性地下降 并且还朝向比第二设定频带长的较长波长侧。 控制单元基于通过波长稳定滤波器透射的光产生使光学可调谐滤波器从输入的WDM信号中提取具有预定波长的信号光所需的控制信号。

公开(公告)号：US07308168B2

公开(公告)日：2007-12-11

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 ,  G02F

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。

公开(公告)号：US20070147841A1

公开(公告)日：2007-06-28

申请号：US11681463

申请日：2007-03-02

申请人： Yutaka Takita ,  Yutaka Kai ,  Yasuhiko Aoki ,  Kyosuke Sone

发明人： Yutaka Takita ,  Yutaka Kai ,  Yasuhiko Aoki ,  Kyosuke Sone

IPC分类号： H04J14/02

CPC分类号： H04J14/028 ,  G02F2203/585 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0283 ,  H04J14/029 ,  H04J14/0294

摘要： Optical add/drop nodes are used in a network having a pair of optical transmission paths for transmitting optical signals in opposite directions to each other. Each add/drop node comprises a variable split ratio optical coupler for splitting an optical signal output from a transmitter. The split ratio of the variable split ratio optical coupler is set such that the optical power levels of the signals added through the respective optical add/drop nodes are equal to one another respectively on the pair of optical transmission paths.

摘要翻译： 光分插节点用于具有一对光传输路径的网络中，用于将光信号彼此相反的方向传输。 每个添加/分出节点包括用于分离从发射机输出的光信号的可变分光比光耦合器。 可变分频比光耦合器的分频比被设置为使得通过相应的光分插节点添加的信号的光功率电平分别在一对光传输路径上彼此相等。