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1. 发明授权

US06373623B1 Optical amplifier for use in optical communications equipment 失效
标题翻译：用于光通信设备的光放大器
公开(公告)号：US06373623B1
公开(公告)日：2002-04-16
申请号：US09677759
申请日：2000-10-03
申请人： Chihiro Ohshima , Susumu Kinoshita , Terumi Chikama
发明人： Chihiro Ohshima , Susumu Kinoshita , Terumi Chikama
IPC分类号： H01S300
CPC分类号： H01S3/06704 , G02F1/093 , H01S3/06754 , H01S3/094003 , H01S3/09408 , H01S5/40
摘要： The output level of pumping light supplied from a pumping light source is varied using a variable attenuator, which is controlled by a variable attenuator driver circuit. By separating a portion containing the pumping light source from a portion containing an amplification medium, it becomes possible to prevent heat emitted by the pumping light source from adversely affecting the amplification medium. By arranging the portion containing the pumping light source such that a pumping light source or sources can be added when necessary, optical transmission system requirements of having more pumping light sources for system upgrade can be accommodated readily. By packaging portions containing amplification media, an optical amplifier can be made small.
摘要翻译：从泵浦光源提供的泵浦光的输出电平使用由可变衰减器驱动电路控制的可变衰减器来改变。通过从包含放大介质的部分分离含有泵浦光源的部分，可以防止由泵浦光源发出的热量对放大介质产生不利影响。通过布置包含泵浦光源的部分，使得在必要时可以添加泵浦光源或源，可容易地适应具有用于系统升级的更多泵浦光源的光传输系统要求。通过封装包含放大介质的部分，可以使光放大器变小。

2. 发明授权

US06335823B2 Optical amplifier for use in optical communications equipment 失效
公开(公告)号：US06335823B2
公开(公告)日：2002-01-01
申请号：US09769532
申请日：2001-01-26
申请人： Chihiro Ohshima , Susumu Kinoshita , Terumi Chikama
发明人： Chihiro Ohshima , Susumu Kinoshita , Terumi Chikama
IPC分类号： H01S301
CPC分类号： H01S3/094003 , H01S3/06704 , H01S3/09408
摘要： The output level of pumping light supplied from a pumping light source is varied using a variable attenuator, which is controlled by a variable attenuator driver circuit. By separating a portion containing the pumping light source from a portion containing an amplification medium, it becomes possible to prevent heat emitted by the pumping light source from adversely affecting the amplification medium. By arranging the portion containing the pumping light source such that a pumping light source or sources can be added when necessary, optical transmission system requirements of having more pumping light sources for system upgrade can be accommodated readily. By packaging portions containing amplification media, an optical amplifier can be made small.

3. 发明授权

US06496300B2 Optical amplifier 失效
标题翻译：光放大器
公开(公告)号：US06496300B2
公开(公告)日：2002-12-17
申请号：US09093410
申请日：1998-06-09
申请人： Susumu Kinoshita , Miki Onaka , Yasushi Sugaya , Chihiro Ohshima , Terumi Chikama , Hiroyuki Itou , Tadashi Okiyama , Taiki Kobayashi
发明人： Susumu Kinoshita , Miki Onaka , Yasushi Sugaya , Chihiro Ohshima , Terumi Chikama , Hiroyuki Itou , Tadashi Okiyama , Taiki Kobayashi
IPC分类号： H04B1017
CPC分类号： H04B10/2941 , H01S3/06758 , H04B2210/003 , H04J14/0221
摘要： An optical amplifier of a wavelength-division multiplexing transmission system that includes a pre-stage optical amplifying unit and a post stage optical amplifying unit. The pre-stage optical amplifying unit has a rare-earth element doped optical fiber and a pump light source for inputting a pump light to the rare-earth element doped optical fiber. The post-stage optical amplifying unit has a second rare-earth element doped optical fiber and a pump light source for inputting a pump light to the second rare-earth element doped optical fiber. The pre-stage optical amplifying unit and the post-stage optical amplifying unit are optically connected by a detachable optical coupling device. In addition, a gain equalizing unit, positioned on an output side of the optical fibers, compensates for wavelength-dependency of a gain characteristic of the optical fibers.
摘要翻译：一种包括前级光放大单元和后级光放大单元的波分复用传输系统的光放大器。前级光放大单元具有稀土元素掺杂光纤和用于将泵浦光输入到稀土元素掺杂光纤的泵浦光源。后级光放大单元具有第二稀土元素掺杂光纤和用于将泵浦光输入到第二稀土元素掺杂光纤的泵浦光源。前级光放大单元和后级光放大单元通过可拆卸光耦合装置光学连接。此外，位于光纤的输出侧的增益均衡单元补偿光纤的增益特性的波长依赖性。

4. 发明授权

US06873457B2 Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method 失效
标题翻译：光放大器，用于光放大器的激发光源控制方法和光放大器控制方法
公开(公告)号：US06873457B2
公开(公告)日：2005-03-29
申请号：US10352941
申请日：2003-01-29
申请人： Susumu Kinoshita , Terumi Chikama
发明人： Susumu Kinoshita , Terumi Chikama
IPC分类号： H04B10/25 , H01S3/094 , H04B10/032 , H04B10/077 , H04B10/079 , H04B10/2525 , H04B10/29 , H04B10/296 , H04B10/297 , H04J14/02 , H01S3/00
CPC分类号： H04B10/296 , H01S3/094003 , H04B10/291 , H04B10/294 , H04J14/0221
摘要： An optical amplifier for use in, for example, a wavelength multiplexing optical communication system, in order to allow an excitation light source to be enlargeable or removable in accordance with an increase/decrease in the number of channels in signal light even if the optical communication system is in operation.
摘要翻译：一种用于例如波分复用光通信系统的光放大器，以便根据信号光中的信道数目的增加/减少，允许激励光源可放大或可移除，即使光通信系统正在运行。

5. 发明授权

US06178037B1 Optical amplifying apparatus 失效
标题翻译：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。

6. 发明授权

US06631026B2 Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method 有权
公开(公告)号：US06631026B2
公开(公告)日：2003-10-07
申请号：US10227268
申请日：2002-08-26
申请人： Susumu Kinoshita , Terumi Chikama
发明人： Susumu Kinoshita , Terumi Chikama
IPC分类号： H01S300
CPC分类号： H04B10/296 , H01S3/094003 , H04B10/291 , H04B10/294 , H04J14/0221
摘要： In an optical amplifier for use in, for example, a wavelength multiplexing optical communication system, in order to allow an excitation light source to be enlargeable or removable in accordance with an increase/decrease in the number of channels in signal light even if the optical communication system is in operation, there are included an optical amplifying section (2) for amplifying and outputting inputted signal light, a plurality of excitation light sources (3, 4) and an excitation light source control section (5) for controlling operations of the excitation light sources (3, 4), wherein the excitation light sources are composed of a main excitation light source (3) and an auxiliary excitation light source (4), and the excitation light source control section (5) is equipped with a control section (7) which, when the number of channels in the inputted signal light is equal to or less than a predetermined number of channels, executes control whereby the main excitation light source (3) supplies excitation light and which executes control whereby the main excitation light source (3) and the auxiliary excitation light source (4) cooperatively supply excitation light when the number of channels in the signal light is more than the predetermined number of channels.

7. 发明授权

US5737118A Optical amplifying apparatus 失效
标题翻译：光放大装置
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。

8. 发明申请

US20110262140A1 MULTI-WAVELENGTH LIGHT AMPLIFIER 有权
标题翻译：多波长光放大器
公开(公告)号：US20110262140A1
公开(公告)日：2011-10-27
申请号：US13177065
申请日：2011-07-06
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： H04J14/02
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，具有放大从第一级光输出的第一光的第二光放大光纤的第二级光放大器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。

9. 发明授权

US6055092A Multi-wavelength light amplifier 失效
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.

10. 发明申请

US20090225403A1 MULTI-WAVELENGTH LIGHT AMPLIFIER 有权
标题翻译：多波长光放大器
公开(公告)号：US20090225403A1
公开(公告)日：2009-09-10
申请号：US12410027
申请日：2009-03-24
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，具有放大从第一级光输出的第一光的第二光放大光纤的第二级光放大器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。

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