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：US20090237127A1

公开(公告)日：2009-09-24

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： H03K3/00

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：US20070116404A1

公开(公告)日：2007-05-24

申请号：US11363209

申请日：2006-02-28

申请人： Takashi Nakano ,  Masaji Noguchi ,  Tatsuji Satou ,  Tomohiro Ueno ,  Yutaka Kai ,  Yutaka Takita

发明人： Takashi Nakano ,  Masaji Noguchi ,  Tatsuji Satou ,  Tomohiro Ueno ,  Yutaka Kai ,  Yutaka Takita

IPC分类号： G02B6/26

CPC分类号： G02F1/31

摘要： A response-time storing unit stores a response time from start of output of driving force required for switching paths until stabilization of the driving force, for each of the paths to be connected. A driving-force correcting unit corrects output level of the driving force, starting correction of the output level of the driving force after the response time for a specified path stored in the response-time storing unit has passed since output of the driving force required for switching to the specified path started.

摘要翻译： 响应时间存储单元存储从切换路径所需的驱动力的输出开始直到驱动力的稳定的响应时间，对于要连接的每个路径。 驱动力校正单元校正驱动力的输出水平，从存储在响应时间存储单元中的指定路径的响应时间开始校正驱动力的输出水平，由此输出所需的驱动力 切换到指定的路径开始。

公开(公告)号：US20070171505A1

公开(公告)日：2007-07-26

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

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。

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。

公开(公告)号：US20060269185A1

公开(公告)日：2006-11-30

申请号：US11213955

申请日：2005-08-30

申请人： Masaji Noguchi ,  Tomohiro Ueno ,  Hiroyasu Ito ,  Hideyuki Miyata ,  Yutaka Kai

发明人： Masaji Noguchi ,  Tomohiro Ueno ,  Hiroyasu Ito ,  Hideyuki Miyata ,  Yutaka Kai

IPC分类号： G02F1/335

CPC分类号： G02F1/113

摘要： A radio-frequency-signal generator generates an RF signal. An optical monitor monitors a first intensity of a reference signal and a second intensity of a drop signal. A reference-frequency determining unit determines, based on the first intensity, a first frequency of an RF signal that causes the AOTF to output the reference signal. A temperature detecting unit detects a temperature of the AOTF. A frequency calculating unit calculates a second frequency of an RF signal that causes the AOTF to output a drop signal of a desired wavelength. A control unit controls the RF-signal generator to generate the RF signal of the second frequency calculated.

摘要翻译： 射频信号发生器产生RF信号。 光学监视器监视参考信号的第一强度和下降信号的第二强度。 参考频率确定单元基于第一强度确定使AOTF输出参考信号的RF信号的第一频率。 温度检测单元检测AOTF的温度。 频率计算单元计算使AOTF输出所需波长的液滴信号的RF信号的第二频率。 控制单元控制RF信号发生器以产生所计算的第二频率的RF信号。

公开(公告)号：US07181094B2

公开(公告)日：2007-02-20

申请号：US11213955

申请日：2005-08-30

申请人： Masaji Noguchi ,  Tomohiro Ueno ,  Hiroyasu Ito ,  Hideyuki Miyata ,  Yutaka Kai

发明人： Masaji Noguchi ,  Tomohiro Ueno ,  Hiroyasu Ito ,  Hideyuki Miyata ,  Yutaka Kai

IPC分类号： G02F1/335 ,  H04J14/02 ,  H04B10/00

CPC分类号： G02F1/113

摘要： A radio-frequency-signal generator generates an RF signal. An optical monitor monitors a first intensity of a reference signal and a second intensity of a drop signal. A reference-frequency determining unit determines, based on the first intensity, a first frequency of an RF signal that causes the AOTF to output the reference signal. A temperature detecting unit detects a temperature of the AOTF. A frequency calculating unit calculates a second frequency of an RF signal that causes the AOTF to output a drop signal of a desired wavelength. A control unit controls the RF-signal generator to generate the RF signal of the second frequency calculated.

摘要翻译： 射频信号发生器产生RF信号。 光学监视器监视参考信号的第一强度和下降信号的第二强度。 参考频率确定单元基于第一强度确定使AOTF输出参考信号的RF信号的第一频率。 温度检测单元检测AOTF的温度。 频率计算单元计算使AOTF输出所需波长的液滴信号的RF信号的第二频率。 控制单元控制RF信号发生器以产生所计算的第二频率的RF信号。

公开(公告)号：US07406262B2

公开(公告)日：2008-07-29

申请号：US11082958

申请日：2005-03-18

申请人： Goji Nakagawa ,  Hideyuki Miyata ,  Yutaka Kai ,  Hiroshi Onaka ,  Setsuo Yoshida ,  Kyosuke Sone ,  Tomohiro Ueno

发明人： Goji Nakagawa ,  Hideyuki Miyata ,  Yutaka Kai ,  Hiroshi Onaka ,  Setsuo Yoshida ,  Kyosuke Sone ,  Tomohiro Ueno

IPC分类号： H04J14/02

CPC分类号： H04B10/572 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/022 ,  H04J14/0227

摘要： An optical transmission device improved in quality and reliability of OADM function and permitting configuration of highly-flexible, economical OADM networks. A wavelength tunable filter variably selects a wavelength according to a control frequency. A filter controller applies the control frequency to the filter while scanning wavelength over an entire signal bandwidth, to detect, from a reference wavelength monitor signal supplied thereto, a reference control frequency which permits the filter to select a reference wavelength and according to which wavelength is matched. On receiving a wavelength selection request, the controller obtains a target control frequency from the reference control frequency and the position of a target wavelength relative to the reference wavelength, and applies the obtained frequency to the filter. A reference wavelength filter transmits the reference wavelength therethrough. A light-receiving element monitors the transmitted reference wavelength to generate the monitor signal.

摘要翻译： 一种光传输设备改进了OADM功能的质量和可靠性，并允许配置高度灵活，经济的OADM网络。 波长可调滤波器根据控制频率可变地选择波长。 滤波器控制器在整个信号带宽上扫描波长时将滤波器的控制频率施加到滤波器，从提供给其的参考波长监测信号中检测出允许滤波器选择参考波长的参考控制频率，根据哪个波长是 匹配。 在接收到波长选择请求时，控制器从参考控制频率和目标波长相对于参考波长的位置获得目标控制频率，并将获得的频率应用于滤波器。 参考波长滤波器透过参考波长。 光接收元件监测发射的参考波长以产生监测信号。

公开(公告)号：US20050169633A1

公开(公告)日：2005-08-04

申请号：US11082958

申请日：2005-03-18

申请人： Goji Nakagawa ,  Hideyuki Miyata ,  Yutaka Kai ,  Hiroshi Onaka ,  Setsuo Yoshida ,  Kyosuke Sone ,  Tomohiro Ueno

发明人： Goji Nakagawa ,  Hideyuki Miyata ,  Yutaka Kai ,  Hiroshi Onaka ,  Setsuo Yoshida ,  Kyosuke Sone ,  Tomohiro Ueno

IPC分类号： H04B10/27 ,  G02F1/125 ,  H01L31/12 ,  H01S5/0687 ,  H04B10/07 ,  H04B10/275 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/572 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/022 ,  H04J14/0227

摘要： An optical transmission device improved in quality and reliability of OADM function and permitting configuration of highly-flexible, economical OADM networks. A wavelength tunable filter variably selects a wavelength according to a control frequency. A filter controller applies the control frequency to the filter while scanning wavelength over an entire signal bandwidth, to detect, from a reference wavelength monitor signal supplied thereto, a reference control frequency which permits the filter to select a reference wavelength and according to which wavelength is matched. On receiving a wavelength selection request, the controller obtains a target control frequency from the reference control frequency and the position of a target wavelength relative to the reference wavelength, and applies the obtained frequency to the filter. A reference wavelength filter transmits the reference wavelength therethrough. A light-receiving element monitors the transmitted reference wavelength to generate the monitor signal.

摘要翻译： 一种光传输设备改进了OADM功能的质量和可靠性，并允许配置高度灵活，经济的OADM网络。 波长可调滤波器根据控制频率可变地选择波长。 滤波器控制器在整个信号带宽上扫描波长时将滤波器的控制频率施加到滤波器，从提供给其的参考波长监测信号中检测出允许滤波器选择参考波长的参考控制频率，根据哪个波长是 匹配。 在接收到波长选择请求时，控制器从参考控制频率和目标波长相对于参考波长的位置获得目标控制频率，并将获得的频率应用于滤波器。 参考波长滤波器透过参考波长。 光接收元件监测发射的参考波长以产生监测信号。

公开(公告)号：US07187814B2

公开(公告)日：2007-03-06

申请号：US10960023

申请日：2004-10-08

申请人： Masaji Noguchi ,  Toshihisa Kyouno ,  Hideyuki Miyata ,  Yutaka Kai

发明人： Masaji Noguchi ,  Toshihisa Kyouno ,  Hideyuki Miyata ,  Yutaka Kai

IPC分类号： G02F1/335 ,  G02B6/42 ,  G02B6/26

CPC分类号： G02F1/125 ,  G02F1/116 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021

摘要： A drop-type AOTF is used as a configuration for removing from a through signal an optical signal having the same wavelength as that of an optical signal to be added. To the drop-type AOTF, RF signals are input to always select all of wavelengths, and an RF signal is not input for a wavelength desired to be rejected. As a result, the optical signal having the wavelength for which the RF signal is stopped is not selected by the drop-type AOTF, and cannot pass through. Since there is only one RF signal whose input is stopped, a “drawing effect” does not occur, and control of an optical add/drop device is simplified. Additionally, since high-speed switching can be made, and a wavelength to be added can be varied, restrictions are not imposed on a network configuration.

摘要翻译： 使用液滴型AOTF作为从通过信号去除与要添加的光信号的波长相同的波长的光信号的配置。 对于放大型AOTF，输入RF信号以始终选择所有波长，并且不输入要被拒绝的波长的RF信号。 结果，具有停止RF信号的波长的光信号不被滴型AOTF选择，不能通过。 由于只有一个RF信号的输入停止，所以不会产生“绘图效果”，简化了光学分插装置的控制。 此外，由于可以进行高速切换，并且可以改变要添加的波长，所以不对网络配置施加限制。