公开(公告)号：US08139903B2

公开(公告)日：2012-03-20

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： 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：US08107813B2

公开(公告)日：2012-01-31

申请号：US12320439

申请日：2009-01-26

申请人： Setsuo Yoshida ,  Yutaka Kai ,  Masaji Noguchi

发明人： Setsuo Yoshida ,  Yutaka Kai ,  Masaji Noguchi

IPC分类号： H04J14/00 ,  G02B6/26

CPC分类号： H03K19/018557 ,  H03K19/00346 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0011 ,  H04Q2011/0013 ,  H04Q2011/0016 ,  H04Q2011/0039

摘要： A drive circuit includes a first transistor that is controlled to be in on or off state in response to a control signal, and outputs, in on state, a positive current which is input from a first operational amplifier connected with a drain of the first transistor to a semiconductor optical amplifier; and a second transistor that is connected with a source of the first transistor, and is in inverse on or off state to the state of the first transistor. The drive circuit also includes a negative voltage circuit that is connected to a source of the second transistor, and outputs, when the second transistor is in on state, a negative current to the semiconductor optical amplifier.

摘要翻译： 驱动电路包括响应于控制信号被控制为处于导通或截止状态的第一晶体管，并且在导通状态下输出从与第一晶体管的漏极连接的第一运算放大器输入的正电流 到半导体光放大器; 以及第二晶体管，其与第一晶体管的源极连接，并且处于与第一晶体管的状态相反的导通或截止状态。 驱动电路还包括连接到第二晶体管的源极的负电压电路，并且当第二晶体管处于导通状态时，输出到半导体光放大器的负电流。

公开(公告)号：US20110254608A1

公开(公告)日：2011-10-20

申请号：US13086766

申请日：2011-04-14

申请人： Yutaka KAI ,  Setsuo YOSHIDA ,  Taku YOSHIDA ,  Keisuke HARADA

发明人： Yutaka KAI ,  Setsuo YOSHIDA ,  Taku YOSHIDA ,  Keisuke HARADA

IPC分类号： H03L5/00

CPC分类号： H04B10/2942 ,  H04J14/0221

摘要： A level control circuit that generates output signal for level control includes: a control information storage that stores control information corresponding to a signal level, a control information circuit that outputs the output signal for level control corresponding to the signal level of a first input signal based on the control information stored in the control information storage; and an information update circuit that updates the control information of the control information storage according to the signal level of a second input signal.

摘要翻译： 产生电平控制的输出信号的电平控制电路包括：存储对应于信号电平的控制信息的控制信息存储器，输出与第一输入信号的信号电平对应的电平控制的输出信号的控制信息电路， 关于存储在控制信息存储器中的控制信息; 以及信息更新电路，其根据第二输入信号的信号电平更新控制信息存储器的控制信息。

公开(公告)号：US08032028B2

公开(公告)日：2011-10-04

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。

公开(公告)号：US20110116798A1

公开(公告)日：2011-05-19

申请号：US12946844

申请日：2010-11-15

申请人： Yutaka KAI

发明人： Yutaka KAI

IPC分类号： H04B10/20

CPC分类号： H04B10/0773 ,  H04Q11/0067 ,  H04Q2011/0069 ,  H04Q2011/0079 ,  H04Q2011/0081

摘要： An optical communication network includes a plurality of optical transmission devices, a communication path, an optical repeater, and a supervisory controller that includes a supervisory control information sender which is installed on at least one of one of the optical transmission devices and the optical repeater and controls a drive signal supplied to a semiconductor optical amplifier that amplifies and outputs input signal light onto the communication path on the basis of the supervisory control information, and a supervisory control information receiver that receives the light which has been output from a semiconductor optical amplifier and transmitted through the communication path, converts the received light to an electric signal and identifies the supervisory control information on the basis of an intensity-modulated component of the total power of the electric signal in at least the other of one of the optical transmission devices and the optical repeater.

摘要翻译： 光通信网络包括多个光传输设备，通信路径，光中继器和监控控制器，其包括安装在光传输设备和光中继器中的至少一个上的监控信息发送器，以及 控制提供给半导体光放大器的驱动信号，其基于监控信息放大并输出到通信路径上的输入信号光;以及监控信息接收器，其接收从半导体光放大器输出的光，以及 通过通信路径发送，将接收到的光转换为电信号，并且基于光传输装置中的至少另一个中的电信号的总功率的强度调制分量来识别监控信息，以及 光中继器。

公开(公告)号：US07826744B2

公开(公告)日：2010-11-02

申请号：US11313960

申请日：2005-12-22

申请人： Hideyuki Miyata ,  Goji Nakagawa ,  Yutaka Kai

发明人： Hideyuki Miyata ,  Goji Nakagawa ,  Yutaka Kai

IPC分类号： H04B10/20 ,  H04J14/02

CPC分类号： H04Q11/0062 ,  H04B10/27 ,  H04B10/272 ,  H04J14/0201 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0227 ,  H04J14/0228 ,  H04J14/0238 ,  H04J14/0241 ,  H04J14/0282 ,  H04J14/0283 ,  H04Q11/0005 ,  H04Q2011/0035 ,  H04Q2011/0092 ,  H04Q2011/0094 ,  H04Q2011/0096

摘要： An optical network system is disclosed by which flexible wavelength path setting can be performed in accordance with tree-shaped and star-shaped network topology. A central node includes a multiplexing section for multiplexing optical signals transmitted from user nodes and inputted thereto, and a central node side branching section for branching the optical signal multiplexed by the multiplexing section and supplying the branched optical signals to the user nodes. Each of the user nodes includes a transmission section capable of outputting an optical signal to which transmission wavelengths different from those of the other user nodes are set, and a reception section for extracting selected optical wavelength components from the branched light supplied thereto from the central node side branching section and extracting optical signals from the extracted optical wavelength components.

摘要翻译： 公开了一种光网络系统，通过其可以根据树形和星形网络拓扑来执行灵活的波长路径设置。 中央节点包括多路复用部分，用于复用从用户节点发送的光信号并输入其中;以及中央节点侧分支部分，用于分支由多路复用部分复用的光信号，并将分支的光信号提供给用户节点。 每个用户节点包括能够输出与其他用户节点的发送波长不同的发送波长的光信号的发送部分，以及从中央节点向其提供的分支光提取所选择的光波长分量的接收部分 并从所提取的光波长分量中提取光信号。

公开(公告)号：US07791793B2

公开(公告)日：2010-09-07

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： H04J14/02 ,  G05F1/00 ,  H01S5/00

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：US20090297147A1

公开(公告)日：2009-12-03

申请号：US12320439

申请日：2009-01-26

申请人： Setsuo YOSHIDA ,  Yutaka KAI ,  Masaji NOGUCHI

发明人： Setsuo YOSHIDA ,  Yutaka KAI ,  Masaji NOGUCHI

IPC分类号： H04J14/00 ,  H03K17/687

CPC分类号： H03K19/018557 ,  H03K19/00346 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0011 ,  H04Q2011/0013 ,  H04Q2011/0016 ,  H04Q2011/0039

摘要： A drive circuit includes a first transistor that is controlled to be in on or off state in response to a control signal, and outputs, in on state, a positive current which is input from a first operational amplifier connected with a drain of the first transistor to a semiconductor optical amplifier; and a second transistor that is connected with a source of the first transistor, and is in inverse on or off state to the state of the first transistor. The drive circuit also includes a negative voltage circuit that is connected to a source of the second transistor, and outputs, when the second transistor is in on state, a negative current to the semiconductor optical amplifier.

摘要翻译： 驱动电路包括响应于控制信号被控制为处于导通或截止状态的第一晶体管，并且在导通状态下输出从与第一晶体管的漏极连接的第一运算放大器输入的正电流 到半导体光放大器; 以及第二晶体管，其与第一晶体管的源极连接，并且处于与第一晶体管的状态相反的导通或截止状态。 驱动电路还包括连接到第二晶体管的源极的负电压电路，并且当第二晶体管处于导通状态时，输出到半导体光放大器的负电流。

公开(公告)号：US20090196607A1

公开(公告)日：2009-08-06

申请号：US12363203

申请日：2009-01-30

申请人： Yutaka KAI

发明人： Yutaka KAI

IPC分类号： H04J14/00

CPC分类号： H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0267 ,  H04J14/0284 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0039 ,  H04Q2011/0049 ,  H04Q2011/005 ,  H04Q2213/1301

摘要： An apparatus has a plurality of transmitters for transmitting optical packet signals having wavelengths; a multiplexer for multiplexing the optical packet signals transmitted by the plurality of transmitters; a packet scheduler controlling a timing at which each of the transmitters transmits the optical packet signal; and an assister for controlling power of assist light in accordance with a signal from the packet scheduler and causing the assist light to be wavelength-multiplexed with the wavelength multiplexed light such that a total sum of power of the wavelength multiplexed light and the power of the assist light is held constant under a predetermined condition.

摘要翻译： 一种装置具有用于发射具有波长的光分组信号的多个发射机; 多路复用器，用于复用由多个发射机发送的光分组信号; 控制每个发射机发送光分组信号的定时的分组调度器; 以及辅助器，用于根据来自分组调度器的信号来控制辅助光的功率，并使辅助光与波长复用光波长复用，使得波长复用光的功率总和和 辅助光在预定条件下保持恒定。

公开(公告)号：US07405858B2

公开(公告)日：2008-07-29

申请号：US11443114

申请日：2006-05-31

申请人： Masaji Noguchi ,  Tomohiro Ueno ,  Goji Nakagawa ,  Yutaka Kai

发明人： Masaji Noguchi ,  Tomohiro Ueno ,  Goji Nakagawa ,  Yutaka Kai

IPC分类号： G02F1/11 ,  G02F1/33 ,  G02B26/00 ,  G02B26/08

CPC分类号： G02F1/113

摘要： An AOTF control apparatus, which applies an RF signal to an AOTF to allow a selected light to pass through the AOTF, includes: a first calculating unit calculating a relationship between a frequency of the RF signal and a wavelength of the selected light based on a frequency of the RF signal that allows a reference light to pass through the AOTF; and a second calculating unit calculating a relationship between a power of the RF signal and an attenuation amount of the selected light based on an input/output power of the reference signal at the input/output of the AOTF.

摘要翻译： AOTF控制装置，其向AOTF施加RF信号以允许所选择的光通过AOTF，包括：第一计算单元，基于所述第一计算单元计算所述RF信号的频率与所选择的光的波长之间的关系 允许参考光通过AOTF的RF信号的频率; 以及第二计算单元，基于在AOTF的输入/输出处的参考信号的输入/输出功率来计算RF信号的功率与所选择的光的衰减量之间的关系。