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41. 发明授权

US5903385A Remotely pumping type multi-wavelength light transmission system 失效
公开(公告)号：US5903385A
公开(公告)日：1999-05-11
申请号：US955439
申请日：1997-10-21
申请人： Yasushi Sugaya , Terumi Chikama
发明人： Yasushi Sugaya , Terumi Chikama
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H04B10/07 , H04B10/296 , H04J14/00 , H04J14/02 , G02B6/28 , H01J3/30 , H01S3/14
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.

42. 发明授权

US08320040B2 Multi-wavelength light amplifier 有权
标题翻译：多波长光放大器
公开(公告)号：US08320040B2
公开(公告)日：2012-11-27
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： 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输出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。

43. 发明授权

US08004752B2 Multi-wavelength light amplifier 有权
标题翻译：多波长光放大器
公开(公告)号：US08004752B2
公开(公告)日：2011-08-23
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。

44. 发明授权

US07474459B2 Multi-wavelength light amplifier 失效
标题翻译：多波长光放大器
公开(公告)号：US07474459B2
公开(公告)日：2009-01-06
申请号：US10235720
申请日：2002-09-06
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： H04B10/17 , H04B10/12
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光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，以及将第二级光放大器的第二光输出保持在恒定功率水平的光学系统。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。

45. 发明授权

US07142785B2 Light branching/inserting apparatus and light branching apparatus using wavelength selection filter 失效
标题翻译：光分路/插入装置和使用波长选择滤波器的光分支装置
公开(公告)号：US07142785B2
公开(公告)日：2006-11-28
申请号：US10354077
申请日：2003-01-30
申请人： Kazue Otsuka , Hiroshi Onaka , Terumi Chikama
发明人： Kazue Otsuka , Hiroshi Onaka , Terumi Chikama
IPC分类号： H04B10/00
CPC分类号： H04J14/021 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0221
摘要： A light branching/inserting apparatus which can easily control light signal wavelengths, and which can branch, insert or transmit light signals having an optional wavelength and optional multiplexed number, by using a wavelength selection filter utilizing acousto-optic effects. The apparatus comprises; an ADM node section 10 which has an AOTF 11 with four ports as a wavelength selection filter and is connected to a transmission path, an RF signal generator 20 which generates an RF signal of an optional frequency and applies the signal to the AOTF 11, a selected wavelength-variable light branching section 30 which receives and processes the light signal output from the branching port of the AOTF 11 for each wavelength, a light inserting section 40 which generates an optional number of insertion light signals with optional wavelengths and sends the insertion light signals to an insertion port of the AOTF 11, and a monitoring section 50 which monitors the spectrum of the light signal input/output to/from the ADM node section 10.
摘要翻译：一种光分支/插入装置，其可以容易地控制光信号波长，并且可以通过使用利用声光效应的波长选择滤波器来分支，插入或发送具有可选波长和可选复用数的光信号。该装置包括：具有AOTF 11的ADM节点部分10，其具有四个端口作为波长选择滤波器并连接到传输路径; RF信号发生器20，其生成任选频率的RF信号并将该信号施加到AOTF 11; 选择的波长可变光分支部分30，其接收和处理从每个波长的AOTF 11的分支端口输出的光信号;光插入部分40，其产生任选数量的具有任选波长的插入光信号，并发送插入光信号到AOTF11的插入端口，以及监视部分50，其监视从/从ADM节点部分10输入/输出的光信号的频谱。

46. 发明授权

US06891662B2 Optical amplifier and method for amplifying wavelength multiplexed transmission signal light 有权
标题翻译：光放大器和放大波长复用传输信号光的方法
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。

47. 发明授权

US06542291B1 Optical amplifier excitation light source control method for use in optical amplifier and optical amplifier control method 有权
标题翻译：光放大器激发光源控制方法用于光放大器和光放大器的控制方法
公开(公告)号：US06542291B1
公开(公告)日：2003-04-01
申请号：US09404789
申请日：1999-09-24
申请人： Susumu Kinoshita , Terumi Chikama
发明人： Susumu Kinoshita , Terumi Chikama
IPC分类号： G02B628
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.
摘要翻译：在用于例如波分复用光通信系统的光放大器中，为了允许激励光源可以根据信号光中的信道数目的增加/减少而被放大或移除，即使光学通信系统正在运行，包括用于放大和输出输入信号光的光学放大部分（2），多个激励光源（3,4）和激励光源控制部分（5），用于控制激发光源（3,4），其中所述激发光源由主激励光源（3）和辅助激励光源（4）构成，所述激发光源控制部（5）配备有控制当输入信号光中的通道数等于或小于预定数量的通道时，执行控制，从而主激励光源（3）提供激发光，并且当信号光中的通道数大于预定数量的通道时，执行控制，由此主激励光源（3）和辅助激励光源（4）协同地提供激发光。

48. 发明授权

US06480329B2 Multi-wavelength light amplifier 有权
公开(公告)号：US06480329B2
公开(公告)日：2002-11-12
申请号：US09749719
申请日：2000-12-28
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： H04B1012
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.

49. 发明授权

US06369938B1 Multi-wavelength light amplifier 有权
标题翻译：多波长光放大器
公开(公告)号：US06369938B1
公开(公告)日：2002-04-09
申请号：US09339258
申请日：1999-06-24
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： H01S300
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。

50. 发明授权

US5875054A Bidirectional optical amplifier circuit 失效
标题翻译：双向光放大器电路
公开(公告)号：US5875054A
公开(公告)日：1999-02-23
申请号：US690794
申请日：1996-08-01
申请人： Yoshihito Onoda , Terumi Chikama
发明人： Yoshihito Onoda , Terumi Chikama
IPC分类号： H01S3/07 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/17 , H04B10/00 , H04B10/079 , H04B10/293 , H04B10/297 , H04B10/40 , H04B10/50 , H04B10/60 , G02F1/35 , H01S3/131 , H04B10/12
CPC分类号： H04B10/2972
摘要： Disclosed is a bidirectional optical amplifier circuit having a function that achieves reliable detection of reflections from an exposed end at low cost. Received optical power is detected; if the detected power is less than a prescribed discrimination level, it is then decided that the detected light is not received signal light but transmitted signal light sent in the direction opposite from it and reflected at an exposed fiber end, and the bias current for a laser diode in the opposite path is reduced to lower the optical output level of an EDF.
摘要翻译：公开了一种双向光放大器电路，其具有以低成本可靠地检测来自暴露端的反射的功能。检测到接收到的光功率; 如果检测到的功率小于规定的识别电平，则判定所检测的光未被接收到信号光，而是在与其相反的方向上发射并在曝光的光纤端反射的发射信号光，相反路径上的激光二极管减少以降低EDF的光输出电平。

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