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：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：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：US08547629B2

公开(公告)日：2013-10-01

申请号：US13042737

申请日：2011-03-08

申请人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

发明人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

IPC分类号： H01S3/10 ,  H01S3/23

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/1305 ,  H04B10/2912 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

公开(公告)号：US07969648B2

公开(公告)日：2011-06-28

申请号：US11406281

申请日：2006-04-19

申请人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

发明人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/1305 ,  H04B10/2912 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

摘要翻译： 一种包括第一和第二光放大器的光放大装置和控制器。 第一光放大器接收光并放大所接收的光。 第二光放大器接收由第一光放大器放大的光，并放大所接收的光。 当由第一光学放大器接收的光的电平改变＆Dgr时，控制器控制由第二光放大器接收的光的水平变化大约为＆Dgr。 在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。 在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。 增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。

公开(公告)号：US5764404A

公开(公告)日：1998-06-09

申请号：US508471

申请日：1995-07-28

申请人： Kazuo Yamane ,  Michikazu Shima ,  Yumiko Kawasaki ,  Kenji Tagawa ,  Shinya Inagaki ,  Norifumi Shukunami

发明人： Kazuo Yamane ,  Michikazu Shima ,  Yumiko Kawasaki ,  Kenji Tagawa ,  Shinya Inagaki ,  Norifumi Shukunami

IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S3/13 ,  H01S3/17 ,  H04B10/07 ,  H04B10/2537 ,  H04B10/296 ,  H04J14/00 ,  H04J14/02 ,  H01S3/16 ,  H04B10/12

CPC分类号： H04B10/296 ,  H01S3/1301 ,  H04B10/291 ,  H04B10/2942 ,  H04J14/0221 ,  H01S2302/00 ,  H01S2303/00 ,  H01S3/094096

摘要： An optical amplifier amplifies a wavelength division-multiplexed optical input signal composed of optical signals having different wavelengths such that the output level of each of the optical signal is always optimized and such that the difference between the gains of the amplifier on the optical signals is minimized when the number of optical signals is two. The output level of the amplifier is controlled according to the number of the optical signals, to optimize the output level of each of the optical signals.

摘要翻译： 光放大器放大由具有不同波长的光信号组成的波分复用光输入信号，使得每个光信号的输出电平始终被优化，并使得放大器在光信号上的增益之间的差最小化 当光信号数为2时。 根据光信号的数量控制放大器的输出电平，以优化每个光信号的输出电平。

公开(公告)号：US20060198017A1

公开(公告)日：2006-09-07

申请号：US11406281

申请日：2006-04-19

申请人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

发明人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/1305 ,  H04B10/2912 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

公开(公告)号：US06603596B2

公开(公告)日：2003-08-05

申请号：US09264902

申请日：1999-03-09

申请人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

发明人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

IPC分类号： H01S300

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/1305 ,  H04B10/2912 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by &Dgr;, the controller controls a level of the light received by the second optical amplifier to change by approximately −&Dgr;. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

摘要翻译： 一种包括第一和第二光放大器的光放大装置和控制器。 第一光放大器接收光并放大所接收的光。 第二光放大器接收由第一光放大器放大的光，并放大所接收的光。 当由第一光放大器接收的光的电平改变为DELTA时，控制器控制由第二光放大器接收的光的电平改变大约-DELTA。 在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。 在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。 增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。