公开(公告)号：US06891662B2

公开(公告)日：2005-05-10

申请号：US10013839

申请日：2001-12-13

申请人： Yasushi Sugaya ,  Etsuko Hayashi ,  Terumi Chikama ,  Sinya Inagaki ,  Norifumi Shukunami

发明人： Yasushi Sugaya ,  Etsuko Hayashi ,  Terumi Chikama ,  Sinya Inagaki ,  Norifumi Shukunami

IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H04B10/29 ,  H04B10/296 ,  H04J14/00 ,  H04J14/02 ,  H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/094003 ,  H01S2301/04

摘要： A rare earth element doped fiber forming an optical amplifier is pumped with a plurality of pumping lights to prevent drop of the inversion population ratio in the length direction of the rare earth element doped fiber.

摘要翻译： 用多个泵浦光泵浦形成光放大器的稀土元素掺杂光纤，以防止稀土元素掺杂光纤的长度方向上的反转种群比例下降。

公开(公告)号：US07417791B2

公开(公告)日：2008-08-26

申请号：US11167343

申请日：2005-06-28

申请人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi ,  Norifumi Shukunami ,  Manabu Watanabe

发明人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi ,  Norifumi Shukunami ,  Manabu Watanabe

IPC分类号： H01S3/00

CPC分类号： H01S3/094003 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/094061 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/02 ,  H01S2301/04

摘要： Multi-wavelength light is inputted to an erbium-doped fiber as an optical amplification medium. Pump light is supplied to this erbium-doped fiber. When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.

摘要翻译： 多波长光被输入到掺铒光纤作为光放大介质。 泵浦光被提供给该掺铒光纤。 当在掺铒光纤中将来自多波长的短波长区域的状态信号光的转变输入到不输入信号光的状态时，多波长的长波长区域的信号光的输出功率 - 波长的光可以变化。 选择泵浦光的波长，使得当功率变化时，长波长区域上的信号光的输出功率不能为负。

公开(公告)号：US20050248834A1

公开(公告)日：2005-11-10

申请号：US11167343

申请日：2005-06-28

申请人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi ,  Norifumi Shukunami ,  Manabu Watanabe

发明人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi ,  Norifumi Shukunami ,  Manabu Watanabe

IPC分类号： H01S3/10 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/13 ,  H01S3/131 ,  H04B10/25 ,  H04B10/2507 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02

CPC分类号： H01S3/094003 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/094061 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/02 ,  H01S2301/04

摘要： Multi-wavelength light is inputted to an erbium-doped fiber as an optical amplification medium. Pump light is supplied to this erbium-doped fiber. When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.

摘要翻译： 多波长光被输入到掺铒光纤作为光放大介质。 泵浦光被提供给该掺铒光纤。 当在掺铒光纤中将来自多波长的短波长区域的状态信号光的转变输入到不输入信号光的状态时，多波长的长波长区域的信号光的输出功率 - 波长的光可以变化。 选择泵浦光的波长，使得当功率变化时，长波长区域上的信号光的输出功率不能为负。

公开(公告)号：US06747790B2

公开(公告)日：2004-06-08

申请号：US10032095

申请日：2001-12-31

申请人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi ,  Norifumi Shukunami ,  Manabu Watanabe

发明人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi ,  Norifumi Shukunami ,  Manabu Watanabe

IPC分类号： H01S300

CPC分类号： H01S3/094003 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/094061 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/02 ,  H01S2301/04

摘要： Multi-wavelength light is inputted to an erbium-doped fiber as an optical amplification medium. Pump light is supplied to this erbium-doped fiber. When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.

公开(公告)号：US6055092A

公开(公告)日：2000-04-25

申请号：US655027

申请日：1996-05-28

申请人： Yasushi Sugaya ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

发明人： Yasushi Sugaya ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H04J14/02 ,  H04B10/12 ,  G02B6/26 ,  H01S3/30

CPC分类号： H04B10/296 ,  H01S3/06754 ,  H01S3/06758 ,  H01S2301/04 ,  H01S3/10015 ,  H01S3/1301 ,  H04J14/0221

摘要： A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second-stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.

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。

公开(公告)号：US06738182B2

公开(公告)日：2004-05-18

申请号：US09903579

申请日：2001-07-13

申请人： Shinya Inagaki ,  Norifumi Shukunami ,  Manabu Watanabe ,  Hisashi Takamatsu ,  Keiko Sasaki ,  Tomoaki Takeyama ,  Yasushi Sugaya ,  Kaoru Moriya ,  Takashi Satou

发明人： Shinya Inagaki ,  Norifumi Shukunami ,  Manabu Watanabe ,  Hisashi Takamatsu ,  Keiko Sasaki ,  Tomoaki Takeyama ,  Yasushi Sugaya ,  Kaoru Moriya ,  Takashi Satou

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S2301/02

摘要： A signal light passes through an isolator, and is coupled by a coupler with a pump light from a pump light source. Then, the signal light passes through an ASE reflection filter, is amplified by an EDF, and is transmitted from an isolator. At this time, an ASE light having a predetermined wavelength among ASE lights that occur within the EDF and proceed to the ASE reflection filter is reflected and again input to the EDF. By setting the predetermined wavelength to a wavelength on the short wavelength side of an amplification band of the EDF, gain deviation occurring on the long wavelength side of the amplification band can be cancelled.

摘要翻译： 信号光通过隔离器，并通过耦合器与来自泵浦光源的泵浦光耦合。 然后，信号光通过ASE反射滤光器，被EDF放大，并从隔离器传输。 此时，在EDF内出现并进入ASE反射滤波器的ASE光中具有预定波长的ASE光被反射并再次输入到EDF。 通过将预定波长设定为EDF的放大频带的短波长侧的波长，可以消除在放大频带的长波长侧发生的增益偏差。

公开(公告)号：US5737118A

公开(公告)日：1998-04-07

申请号：US601244

申请日：1996-02-14

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： H01S3/094 ,  H01S3/06 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/13 ,  H01S5/042 ,  H01S5/06 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/50 ,  H04B10/03 ,  H04B10/07 ,  H04B10/079 ,  H04B10/293 ,  H04B10/90 ,  H01S3/00

CPC分类号： H01S3/1301 ,  H01S5/0683 ,  H01S5/0617 ,  H01S5/06808 ,  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，根据状态监视的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。

公开(公告)号：US07224517B2

公开(公告)日：2007-05-29

申请号：US10086742

申请日：2002-03-04

申请人： Yasushi Sugaya ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

发明人： Yasushi Sugaya ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

IPC分类号： H01S3/00

CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/04 ,  H04B10/2931

摘要： A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second-stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.

摘要翻译： 多波长光放大器包括具有放大光输入的第一放大光纤的第一级光放大器，具有放大从第一级输出的第一光输出的第二光放大光纤的第二级光放大器 光放大器和将第二级光放大器的第二光输出维持在恒定功率电平的光学系统。 第一级和第二级光放大器具有不同的增益与波长特性，使得多波长光放大器与其增益没有波长依赖性。

公开(公告)号：US06507431B1

公开(公告)日：2003-01-14

申请号：US09264903

申请日：1999-03-09

申请人： Yasushi Sugaya ,  Terumi Chikama

发明人： Yasushi Sugaya ,  Terumi Chikama

IPC分类号： H04B1017

CPC分类号： H04B10/2942 ,  H04B10/077 ,  H04B10/07955 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2935 ,  H04B10/296 ,  H04J14/0221

摘要： Multi-wavelength light is transmitted from a sending station to a receiving station. An erbium-doped optical fiber is installed on the transmission path that connects the sending station and the receiving station. Pump light is supplied from a light source installed in the receiving station to the erbium-doped optical fiber. In the receiving station, the multi-wavelength light is decomposed into the component wavelength signals. The light level of each component wavelength signal is detected, and the power of the light emitted by the light source is controlled so as to equalize those light levels.

摘要翻译： 多波长光从发送站发送到接收站。 掺铒光纤安装在连接发送站和接收站的传输路径上。 泵浦光从安装在接收站的光源供给到掺铒光纤。 在接收站中，多波长光分解为分量波长信号。 检测每个分量波长信号的光级，并且控制由光源发射的光的功率以使这些光电平相等。