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公开(公告)号：US08155517B2
公开(公告)日：2012-04-10
申请号：US12578021
申请日：2009-10-13
申请人： Keisuke Harada , Yutaka Kai
发明人： Keisuke Harada , Yutaka Kai
IPC分类号： H04B10/00
CPC分类号： H04Q11/0005 , H04Q11/0066 , H04Q2011/0039 , H04Q2011/0083
摘要： An optical packet switching apparatus includes plural optical switches, an optical switching section that switches a path of an optical packet transmitted thereto according to the switch control signal to output the optical packet, and a control section that takes out a header portion representing a destination of the optical packet transmitted, photoelectrically converts the header to generate the switch control signal according to the destination to transmit the switch control signal to the optical switching section and controls the optical switch. The apparatus further includes a light monitor section that monitors a light quantity level of the optical packet transmitted and a light quantity level of the optical packet to be sent out, and an abnormality recognizing section that recognizes an effective timing of monitoring of the light quantity levels based on the switching control signal, and recognizes an abnormality based on the light quantity levels at the timing.
摘要翻译： 光分组交换装置包括多个光开关，光切换部分，根据切换控制信号切换发送到其上的光分组的路径，以输出光分组;以及控制部分，取出表示目的地的目的地的报头部分 发送的光分组，根据目的地对报头进行光电转换以产生开关控制信号，以将开关控制信号发送到光开关部分并控制光开关。 该装置还包括监视发送的光学分组的光量级别和要发送的光学分组的光量级别的光监视部分和识别光量级别的监视的有效定时的异常识别部分 基于开关控制信号，并且基于该定时处的光量水平来识别异常。
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2.发明授权公开(公告)号：US08937762B2
公开(公告)日：2015-01-20
申请号：US13450577
申请日：2012-04-19
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： H01S3/102
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。
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公开(公告)号：US20120257272A1
公开(公告)日：2012-10-11
申请号：US13417481
申请日：2012-03-12
申请人： Setsuo YOSHIDA , Susumu Kinoshita , George Ishikawa , Goji Nakagawa , Yutaka Kai , Kyosuke Sone , Keisuke Harada
发明人： Setsuo YOSHIDA , Susumu Kinoshita , George Ishikawa , Goji Nakagawa , Yutaka Kai , Kyosuke Sone , Keisuke Harada
IPC分类号： H01S5/06
CPC分类号： H04B10/2914 , H01S5/0078 , H01S5/0428 , H01S5/06216 , H01S5/06835 , H01S5/4087 , H01S5/5027 , H01S2301/04 , H01S2301/06
摘要： An optical amplification apparatus includes a front-stage semiconductor optical amplifier which amplifies an input light and a rear-stage semiconductor optical amplifier which amplifies an amplified light outputted from the front-stage semiconductor optical amplifier. The front-stage semiconductor optical amplifier exercises auto level control of an output light by exercising variable control of driving current which flows according to applied voltage higher than light emitting threshold voltage of an internal optical amplification element. The rear-stage semiconductor optical amplifier performs gate switching of a transmitted light by exercising switching control of driving current. By doing so, distortion of a waveform is controlled and optical communication quality can be improved.
摘要翻译： 光放大装置包括放大输入光的前级半导体光放大器和放大从前级半导体光放大器输出的放大光的后级半导体光放大器。 前级半导体光放大器通过对根据施加的电压高于内部光放大元件的发光阈值电压的驱动电流的可变控制来进行输出光的自动电平控制。 后级半导体光放大器通过进行驱动电流的切换控制来进行透射光的栅极切换。 通过这样做，可以控制波形失真，提高光通信质量。
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公开(公告)号：US09019593B2
公开(公告)日：2015-04-28
申请号：US13417481
申请日：2012-03-12
申请人： Setsuo Yoshida , Susumu Kinoshita , George Ishikawa , Goji Nakagawa , Yutaka Kai , Kyosuke Sone , Keisuke Harada
发明人： Setsuo Yoshida , Susumu Kinoshita , George Ishikawa , Goji Nakagawa , Yutaka Kai , Kyosuke Sone , Keisuke Harada
IPC分类号： H01S5/06 , H04B10/291 , H01S5/50 , H04B10/12 , H01S5/00 , H01S5/042 , H01S5/062 , H01S5/0683 , H01S5/40
CPC分类号： H04B10/2914 , H01S5/0078 , H01S5/0428 , H01S5/06216 , H01S5/06835 , H01S5/4087 , H01S5/5027 , H01S2301/04 , H01S2301/06
摘要： An optical amplification apparatus includes a front-stage semiconductor optical amplifier which amplifies an input light and a rear-stage semiconductor optical amplifier which amplifies an amplified light outputted from the front-stage semiconductor optical amplifier. The front-stage semiconductor optical amplifier exercises auto level control of an output light by exercising variable control of driving current which flows according to applied voltage higher than light emitting threshold voltage of an internal optical amplification element. The rear-stage semiconductor optical amplifier performs gate switching of a transmitted light by exercising switching control of driving current. By doing so, distortion of a waveform is controlled and optical communication quality can be improved.
摘要翻译： 光放大装置包括放大输入光的前级半导体光放大器和放大从前级半导体光放大器输出的放大光的后级半导体光放大器。 前级半导体光放大器通过对根据施加的电压高于内部光放大元件的发光阈值电压的驱动电流的可变控制来进行输出光的自动电平控制。 后级半导体光放大器通过进行驱动电流的切换控制来进行透射光的栅极切换。 通过这样做，可以控制波形失真，提高光通信质量。
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公开(公告)号：US20100027992A1
公开(公告)日：2010-02-04
申请号：US12578021
申请日：2009-10-13
申请人： Keisuke Harada , Yutaka Kai
发明人： Keisuke Harada , Yutaka Kai
CPC分类号： H04Q11/0005 , H04Q11/0066 , H04Q2011/0039 , H04Q2011/0083
摘要： An optical packet switching apparatus includes plural optical switches, an optical switching section that switches a path of an optical packet transmitted thereto according to the switch control signal to output the optical packet, and a control section that takes out a header portion representing a destination of the optical packet transmitted, photoelectrically converts the header to generate the switch control signal according to the destination to transmit the switch control signal to the optical switching section and controls the optical switch. The apparatus further includes a light monitor section that monitors a light quantity level of the optical packet transmitted and a light quantity level of the optical packet to be sent out, and an abnormality recognizing section that recognizes an effective timing of monitoring of the light quantity levels based on the switching control signal, and recognizes an abnormality based on the light quantity levels at the timing.
摘要翻译： 光分组交换装置包括多个光开关，光切换部分，根据切换控制信号切换发送到其上的光分组的路径，以输出光分组;以及控制部分，取出表示目的地的目的地的报头部分 发送的光分组，根据目的地对报头进行光电转换以产生开关控制信号，以将开关控制信号发送到光开关部分并控制光开关。 该装置还包括监视发送的光学分组的光量级别和要发送的光学分组的光量级别的光监视部分和识别光量级别的监视的有效定时的异常识别部分 基于开关控制信号，并且基于该定时处的光量水平来识别异常。
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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
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 。
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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
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。
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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。
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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。
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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。
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