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。

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。

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。

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：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：US20090058534A1

公开(公告)日：2009-03-05

申请号：US12230260

申请日：2008-08-26

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

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

IPC分类号： H03F3/04

CPC分类号： H03F1/565

摘要： A non-inverting amplifier circuit is disclosed that includes an operational amplifier and a preemphasis circuit connected between the operational amplifier and a signal source. The preemphasis circuit is configured to compensate for the internal delay of a load connected to the output of the operational amplifier by emphasizing a high-frequency component of a signal fed from the signal source.

摘要翻译： 公开了一种非反相放大器电路，其包括连接在运算放大器和信号源之间的运算放大器和预加重电路。 预加重电路被配置为通过强调从信号源馈送的信号的高频分量来补偿连接到运算放大器的输出的负载的内部延迟。

公开(公告)号：US07408700B2

公开(公告)日：2008-08-05

申请号：US11384288

申请日：2006-03-21

申请人： Yutaka Kai ,  Setsuo Yoshida

发明人： Yutaka Kai ,  Setsuo Yoshida

IPC分类号： G02F1/29

CPC分类号： G02F1/29 ,  G02F1/31 ,  G02F2001/311

摘要： An optical switch which minimizes losses in the power of output light while enabling deflection of light within a range of comparatively large deflection angles used for setting switching among output ports. The optical switch is configured to have a first light deflection element deflecting the input light at an angle appropriate to a position of an designated port with an applied first drive voltage; and a second light deflection element finely adjusting a deflection angle of the light output from the first deflection element to the designated port with an applied second drive voltage such that power of light output from the designated port becomes maximum.

摘要翻译： 一种光开关，其使输出光功率的损耗最小化，同时能够在用于设置输出端口之间的切换的较大偏转角的范围内偏转光。 光开关被配置为具有第一光偏转元件，其以适合于施加的第一驱动电压的指定端口的位置的角度偏转输入光; 以及第二光偏转元件，利用所施加的第二驱动电压，将从所述第一偏转元件输出的光的偏转角度精细地调整到所述指定端口，使得从所述指定端口输出的光的功率变得最大。

公开(公告)号：US20060221432A1

公开(公告)日：2006-10-05

申请号：US11384288

申请日：2006-03-21

申请人： Yutaka Kai ,  Setsuo Yoshida

发明人： Yutaka Kai ,  Setsuo Yoshida

IPC分类号： G02F1/29

CPC分类号： G02F1/29 ,  G02F1/31 ,  G02F2001/311

摘要： An optical switch which minimizes losses in the power of output light while enabling deflection of light within a range of comparatively large deflection angles used for setting switching among output ports. The optical switch is configured to have a first light deflection element deflecting the input light at an angle appropriate to a position of an designated port with an applied first drive voltage; and a second light deflection element finely adjusting a deflection angle of the light output from the first deflection element to the designated port with an applied second drive voltage such that power of light output from the designated port becomes maximum.

摘要翻译： 一种光开关，其使输出光功率的损耗最小化，同时能够在用于设置输出端口之间的切换的较大偏转角的范围内偏转光。 光开关被配置为具有第一光偏转元件，其以适合于施加的第一驱动电压的指定端口的位置的角度偏转输入光; 以及第二光偏转元件，利用所施加的第二驱动电压，将从所述第一偏转元件输出的光的偏转角度精细地调整到所述指定端口，使得从所述指定端口输出的光的功率变得最大。