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    Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lights
    2.
    发明授权
    Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lights 有权
    用于波分复用（WDM）信号灯的宽带拉曼放大的光放大器

    公开(公告)号：US07394589B2

    公开(公告)日：2008-07-01

    申请号：US10299808

    申请日：2002-11-20

    申请人： Miki Onaka ,  Tomoto Tanaka ,  Etsuko Hayashi ,  Yasushi Sugaya ,  Susumu Kinoshita

    发明人： Miki Onaka ,  Tomoto Tanaka ,  Etsuko Hayashi ,  Yasushi Sugaya ,  Susumu Kinoshita

    IPC分类号： H01S3/00

    CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/0941 ,  H01S3/302 ,  H01S5/146 ,  H01S2301/06 ,  H04B10/2916

    摘要： A Raman amplifier providing a wideband gain for use in a wavelength division multiplexing (WDM) optical communication system. In one embodiment, a first optical amplifier Raman amplifies a wavelength division multiplexed signal light in both a first wavelength band and a second wavelength band in accordance with a plurality of excitation (pumping) lights provided to the first optical amplifier, the first and second wavelength bands being different from each other. A divider divides the amplified signal light into first and second lights in the first and second wavelength bands, respectively. A second optical amplifier amplifies the first light and has a gain band in the first wavelength band. The third optical amplifier amplifies the second light and has a gain in the second wavelength band. In various embodiments, a gain equalizer and/or an optical isolator is used in combination with the first optical amplifier providing the Raman amplification. A controller is also provided to control the excitation lights provided to the first optical amplifier to achieve specific effects.

    摘要翻译： 提供宽带增益的拉曼放大器，用于波分复用（WDM）光通信系统。 在一个实施例中，第一光放大器拉曼根据提供给第一光放大器的多个激励（泵浦）光放大第一波长带和第二波段中的波分复用信号光，第一和第二波长 乐队彼此不同。 分频器将放大的信号光分成第一和第二波长带中的第一和第二光。 第二光放大器放大第一光并具有第一波长带中的增益带。 第三光放大器放大第二光并具有第二波长带的增益。 在各种实施例中，增益均衡器和/或光隔离器与提供拉曼放大的第一光放大器组合使用。 还提供控制器来控制提供给第一光放大器的激发光以实现特定的效果。

    Optical amplifying apparatus
    4.
    发明授权
    Optical amplifying apparatus 失效
    光放大装置

    公开(公告)号：US06178037B1

    公开(公告)日：2001-01-23

    申请号：US09028825

    申请日：1998-02-24

    申请人： Yasushi Sugaya ,  Susumu Kinoshita ,  Hiroshi Onaka ,  Terumi Chikama

    发明人： Yasushi Sugaya ,  Susumu Kinoshita ,  Hiroshi Onaka ,  Terumi Chikama

    IPC分类号： H01S300

    CPC分类号： H01S3/1301 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/0683 ,  H01S5/50

    摘要： A computer-controlled optical amplifying apparatus, which includes an optical amplifying unit including an optical amplifying medium and an optical amplifying control unit controlling the optical amplifying unit under the control of a computer. This optical amplifying control unit is constituted by a status monitoring unit for monitoring the status, an optical output control unit for controlling the optical amplifying unit in accordance with the result of monitoring of status; and a status restoring unit for initializing the control status of the optical output control unit by initializing the computer when detecting an occurrence of the abnormal status by the result of monitoring of status and restoring the optical output control unit to the control status before occurrence of the related abnormal status within a relaxation time inherent in the optical amplifying medium occurring accompanied with this initialization.

    摘要翻译： 一种计算机控制的光学放大装置，其包括具有光放大介质的光放大单元和在计算机的控制下控制光放大单元的光放大控制单元。 该光放大控制单元由用于监视状态的状态监视单元，根据状态监视结果控制光放大单元的光输出控制单元构成; 以及状态恢复单元，用于通过初始化计算机的初始化来初始化光输出控制单元的控制状态，该状态恢复单元通过状态监视的结果检测到异常状态的发生，并且在发生之前将光输出控制单元恢复到控制状态 在与该初始化相关的光放大介质中固有的弛豫时间内的相关异常状态。

    Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of the channels are varied
    5.
    发明授权
    Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of the channels are varied 有权
    当频道数量变化时，控制可变光衰减器来控制波分复用光信号的功率电平的控制器

    公开(公告)号：US6157481A

    公开(公告)日：2000-12-05

    申请号：US328368

    申请日：1999-06-09

    申请人： Yasushi Sugaya ,  Susumu Kinoshita

    发明人： Yasushi Sugaya ,  Susumu Kinoshita

    IPC分类号： H01S3/10 ,  G02B6/06 ,  H01S3/06 ,  H01S3/067 ,  H01S3/13 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/2543 ,  H04B10/29 ,  H04B10/296 ,  H04B10/54 ,  H04B10/564 ,  H04B10/58 ,  H04J14/00 ,  H04J14/02 ,  H04B10/16

    CPC分类号： H01S3/06758 ,  H01S3/1301 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04J14/0221 ,  H01S2301/04 ,  H01S3/10015 ,  H01S3/1003 ,  H04B2210/003

    摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

    摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

    CONTROLLER WHICH CONTROLS A VARIABLE OPTICAL ATTENUATOR TO CONTROL THE POWER LEVEL OF A WAVELENGTH-MULTIPLEXED OPTICAL SIGNAL WHEN THE NUMBER OF CHANNELS ARE VARIED
    7.
    发明申请
    CONTROLLER WHICH CONTROLS A VARIABLE OPTICAL ATTENUATOR TO CONTROL THE POWER LEVEL OF A WAVELENGTH-MULTIPLEXED OPTICAL SIGNAL WHEN THE NUMBER OF CHANNELS ARE VARIED 有权
    控制器控制一个可变的光纤衰减器，以控制多个信道数目变化时的波长多光子信号的功率电平

    公开(公告)号：US20110205620A1

    公开(公告)日：2011-08-25

    申请号：US13097669

    申请日：2011-04-29

    申请人： Yasushi SUGAYA ,  Susumu Kinoshita

    发明人： Yasushi SUGAYA ,  Susumu Kinoshita

    IPC分类号： H01S3/00

    CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

    摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

    摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

    Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
    8.
    发明授权
    Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied 有权
    当频道数量变化时，控制可变光衰减器以控制波分复用光信号的功率电平的控制器

    公开(公告)号：US07969649B2

    公开(公告)日：2011-06-28

    申请号：US12328266

    申请日：2008-12-04

    申请人： Yasushi Sugaya ,  Susumu Kinoshita

    发明人： Yasushi Sugaya ,  Susumu Kinoshita

    IPC分类号： H04B10/17 ,  H04B10/12

    CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

    摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

    摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

    Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
    9.
    发明授权
    Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied 有权
    当频道数量变化时，控制可变光衰减器以控制波分复用光信号的功率电平的控制器

    公开(公告)号：US06865016B2

    公开(公告)日：2005-03-08

    申请号：US10650990

    申请日：2003-08-29

    申请人： Yasushi Sugaya ,  Susumu Kinoshita

    发明人： Yasushi Sugaya ,  Susumu Kinoshita

    IPC分类号： H01S3/10 ,  G02B6/06 ,  H01S3/06 ,  H01S3/067 ,  H01S3/13 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/2543 ,  H04B10/29 ,  H04B10/296 ,  H04B10/54 ,  H04B10/564 ,  H04B10/58 ,  H04J14/00 ,  H04J14/02 ,  G01V1/30

    CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

    摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

    摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。