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51. 发明授权

US06813065B2 Raman amplifier and optical communication system 失效
标题翻译：拉曼放大器和光通信系统
公开(公告)号：US06813065B2
公开(公告)日：2004-11-02
申请号：US09929503
申请日：2001-08-15
申请人： Tetsufumi Tsuzaki , Motoki Kakui , Shinji Ishikawa , Masashi Onishi
发明人： Tetsufumi Tsuzaki , Motoki Kakui , Shinji Ishikawa , Masashi Onishi
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H01S3/06716 , H01S3/06758 , H01S3/302 , H04B2210/003
摘要： Disclosed are a gain module and an optical communication system which have gain in a broad wavelength range and are of low cost. The gain module 10 has two optical fibers 111 and 112 which differ from each other with respect to the composition of their respective optical waveguide region and which are connected in series. Because they differ from each other with respect to the quantity of their respective Stokes shift, they have gain in a different wavelength, respectively. The signal lights are introduced into the input end 10a, amplified with the gain module 10 in a wide wavelength range where an optical fiber has a Raman amplification gain, and are emitted from the output end 10b.
摘要翻译：公开了增益模块和光通信系统，其具有在宽波长范围内的增益并且具有低成本。增益模块10具有两个光纤111和112，它们相对于它们各自的光波导区域的组成而彼此不同，并且串联连接。因为它们相对于它们各自的斯托克斯位移的量彼此不同，它们分别具有不同波长的增益。信号光被引入到输入端10a中，在宽的波长范围内用增益模块10放大，其中光纤具有拉曼放大增益，并从输出端10b发射。

52. 发明授权

US06778322B2 Four-wave mixing suppression in Raman amplifiers 失效
标题翻译：拉曼放大器中的四波混频抑制
公开(公告)号：US06778322B2
公开(公告)日：2004-08-17
申请号：US10120581
申请日：2002-04-12
申请人： Motoki Kakui , Masaaki Hirano
发明人： Motoki Kakui , Masaaki Hirano
IPC分类号： H01S300
CPC分类号： H01S3/302
摘要： A Raman amplifier is structured for resistance to signal waveform deterioration and excellent transmission quality. A wavelength spacing is arranged so that non-degenerate type four-wave mixing is effectively suppressed. When the Raman amplification optical waveguide has a positive dispersion slope with respect to the signal light, the zero-dispersion wavelength &lgr;0 of the Raman amplification optical waveguide is shorter than the center wavelength &lgr;center. When the Raman amplification optical waveguide has a negative dispersion slope with respect to the signal light, the zero-dispersion wavelength &lgr;0 of the Raman amplification optical waveguide is longer than the center wavelength &lgr;center.
摘要翻译：拉曼放大器的结构是阻抗信号波形恶化和良好的传输质量。布置波长间隔使得非简并型四波混频被有效地抑制。当拉曼放大光波导相对于信号光具有正色散斜率时，拉曼放大光波导的零色散波长λ0比中心波长中心长。当拉曼放大光波导相对于信号光具有负色散斜率时，拉曼放大光波导的零色散波长λ0比中心波长中心长。

53. 发明授权

US06771415B2 Optical fiber for optical amplifier and fiber optic amplifier 失效
标题翻译：用于光放大器和光纤放大器的光纤
公开(公告)号：US06771415B2
公开(公告)日：2004-08-03
申请号：US10428043
申请日：2003-05-02
申请人： Shinji Endo , Shinji Ishikawa , Motoki Kakui
发明人： Shinji Endo , Shinji Ishikawa , Motoki Kakui
IPC分类号： H01S300
CPC分类号： H01S3/06754 , H01S3/06708 , H01S3/0672 , H01S3/1601 , H01S3/1608 , H01S3/1655
摘要： An optical fiber for optical amplification used for 1.58 &mgr;m band signal light amplification, at least a core region thereof being doped with Er has a core region at least a part thereof made of silica glass co-doped with Ge and Al together with Er, and Er average atomic concentration in the core region is from 1000 wt-ppm to 3000 wt-ppm inclusive, and cutoff wavelength is from 1.3 &mgr;m to 1.5 &mgr;m inclusive.
摘要翻译：一种用于光放大的光纤用于1.58个母带信号光放大，至少其芯区域被掺杂有铒，其核心区域至少有一部分由与Er一起掺杂Ge和Al的石英玻璃制成，以及核心区域中的Er平均原子浓度为1000重量ppm〜3000重量ppm，截止波长为1.3〜1.5微摩尔。

54. 发明授权

US06243196B1 Optical fiber for optical amplifier and fiber optic amplifier 失效
标题翻译：用于光放大器和光纤放大器的光纤
公开(公告)号：US06243196B1
公开(公告)日：2001-06-05
申请号：US09314973
申请日：1999-05-20
申请人： Shinji Endo , Shinji Ishikawa , Motoki Kakui
发明人： Shinji Endo , Shinji Ishikawa , Motoki Kakui
IPC分类号： H01S300
CPC分类号： H01S3/06754 , H01S3/06708 , H01S3/0672 , H01S3/1601 , H01S3/1608 , H01S3/1655
摘要： An optical fiber for optical amplification used for 1.58 &mgr;m band signal light amplification, at least a core region thereof being doped with Er, wherein at least a part of the core region is made of silica glass co-doped with Ge and Al together with Er, and an average Er atomic concentration in the core region is from 950 wt-ppm to 3000 wt-ppm inclusive.
摘要翻译：一种用于光放大的光纤用于1.58Mum带信号光放大，至少其核心区域掺杂有Er，其中芯区的至少一部分由与Ge和Al一起掺杂的石英玻璃与Er一起制成，核心区域中的平均Er原子浓度为950重量ppm〜3000重量ppm。

55. 发明授权

US6104526A Optical amplifier and a method of controlling the optical amplifier 有权
标题翻译：光放大器和控制光放大器的方法
公开(公告)号：US6104526A
公开(公告)日：2000-08-15
申请号：US349503
申请日：1999-07-09
申请人： Motoki Kakui
发明人： Motoki Kakui
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H01S5/50 , H01S3/00 , H04B10/28 , H01S3/133 , H04B9/00
CPC分类号： H04B10/291 , H01S5/50
摘要： In the optical amplifier of the present invention, a part of signal light inputted to an input connector is branched out by an optical coupler, whereby its power is detected by a light-receiving device. According to the power of input signal light detected by the light-receiving device, the temperature of an amplification optical fiber is controlled by a temperature control section by way of a Peltier device. On the other hand, a part of the signal light outputted from an output connector is branched out by an optical coupler, whereby its power is detected by a light-receiving device. The power of pumping light supplied to the amplification optical fiber from an pumping light source 152 is controlled by an output control section 162 such that the power of output signal light detected by the light-receiving device becomes a predetermined target value.
摘要翻译：在本发明的光放大器中，输入到输入连接器的信号光的一部分由光耦合器分支，由此由光接收装置检测其功率。根据由受光装置检测的输入信号光的功率，放大光纤的温度由温度控制部分通过珀耳帖装置控制。另一方面，从输出连接器输出的信号光的一部分由光耦合器分支，由此由光接收装置检测其功率。由泵浦光源152提供给放大光纤的泵浦功率由输出控制部分162控制，使得由光接收装置检测的输出信号光的功率成为预定的目标值。

56. 发明授权

US5900970A Optical filter and optical transmission system having the same 失效
标题翻译：光滤波器和光传输系统具有相同的功能
公开(公告)号：US5900970A
公开(公告)日：1999-05-04
申请号：US843853
申请日：1997-04-17
申请人： Motoki Kakui
发明人： Motoki Kakui
IPC分类号： G02B6/00 , G02B6/02 , H01S3/06 , H01S3/067 , H01S3/07 , H04J14/02 , H01S3/19 , G02B6/34
CPC分类号： H04B10/25073 , H04J14/0221
摘要： The present invention relates to an optical filter for flattening the gain spectrum of an optical amplification system (including at least one optical amplifier) inserted in a transmission line for transmitting a plurality of signal light components having wavelengths different from each other, and a transmission system including the optical filter. The optical filter according to the invention has a transmission spectrum with inverse characteristics to those of the gain spectrum of the optical amplification system for amplifying the plurality of signal light components. Particularly, the transmission spectrum of the optical filter is characterized in that, in the second wavelength range narrower than the first wavelength range corresponding to the signal light wavelength range and included in the first wavelength range, the difference between the maximum loss and the minimum loss of the transmission spectrum substantially equals the difference between the maximum gain and the minimum gain of the gain spectrum of the optical amplification unit in the first wavelength range.
摘要翻译：本发明涉及一种用于使插入在用于传输具有彼此不同的波长的多个信号光分量的传输线中的光放大系统（包括至少一个光放大器）的增益谱平坦化的滤光器，以及传输系统包括滤光片。根据本发明的滤光器具有与用于放大多个信号光分量的光放大系统的增益光谱相反特性的透射光谱。特别地，滤光器的透射光谱的特征在于，在与包括在第一波长范围中的信号光波长范围相对应的第一波长范围窄的第二波长范围内，最大损耗和最小损耗之间的差的传播频谱基本上等于第一波长范围内的光放大单元的增益谱的最大增益和最小增益之差。

57. 发明授权

US5835259A Optical fiber amplifier 失效
标题翻译：光纤放大器
公开(公告)号：US5835259A
公开(公告)日：1998-11-10
申请号：US709509
申请日：1996-09-06
申请人： Motoki Kakui , Masayuki Shigematsu
发明人： Motoki Kakui , Masayuki Shigematsu
IPC分类号： G02F1/35 , H01S3/067 , H01S3/094 , H01S3/10 , H01S3/16 , H01S3/23 , H04B10/00 , H01S3/06 , H04B10/17
CPC分类号： H04B10/2912 , H01S3/06758 , H04B10/291 , H04B10/294 , H01S2301/04 , H01S2301/06 , H01S3/094003 , H01S3/1608
摘要： An amplifying optical fiber (111) whose wavelength dependency of gain is approximated by a second-order function of wavelength in which the coefficient of square term of wavelength is a negative value and an amplifying optical fiber (112) whose wavelength dependency of gain is approximated by a second-order function of wavelength in which the coefficient of square term of wavelength is a positive value are cascaded to each other. The amplifying optical fiber (112) is realized as the kind and amount of co-dopant element are appropriately selected. To these amplifying optical fibers, pumping light is supplied by way of fiber type couplers (123, 132) after the light intensities of the pumping light output from pumping light sources (121, 131) are adjusted by light intensity adjusting devices (122, 132). Input signal light is output after being transmitted through an optical isolator (140), the fiber type coupler (123), the amplifying optical fibers (111, 112), the fiber type coupler (133), and an optical isolator (150) under their respective gain characteristics or transmission characteristics. The overall gain of an optical fiber amplifier (100) combining the individual characteristics of these parts together has substantially a linear characteristic with respect to wavelength.
摘要翻译：一种放大光纤（111），其增益的波长依赖性由波长平方项的系数为负值的波长的二阶函数和近似的波长依赖性的放大光纤（112）近似通过波长的平方项的系数为正值的波长的二阶函数彼此级联。放大光纤（112）被实现为适当地选择了辅助掺杂元素的种类和量。对于这些放大光纤，在通过光强度调节装置（122,132）调节从泵浦光源（121,131）输出的泵浦光的光强度之后，通过光纤型耦合器（123,132）提供泵浦光）。输入信号光在通过光隔离器（140），光纤耦合器（123），放大光纤（111,112），光纤型耦合器（133）和光隔离器（150）传输之后输出，它们各自的增益特性或传输特性。将这些部件的各个特性结合在一起的光纤放大器（100）的整体增益基本上相对于波长具有线性特性。

58. 发明授权

US08933367B2 Laser processing method 有权
标题翻译：激光加工方法
公开(公告)号：US08933367B2
公开(公告)日：2015-01-13
申请号：US13369076
申请日：2012-02-08
申请人： Motoki Kakui , Hiroshi Kohda , Yasuomi Kaneuchi , Shinobu Tamaoki , Shigehiro Nagano , Yoshiyuki Uno , Yasuhiro Okamoto , Kenta Takahashi
发明人： Motoki Kakui , Hiroshi Kohda , Yasuomi Kaneuchi , Shinobu Tamaoki , Shigehiro Nagano , Yoshiyuki Uno , Yasuhiro Okamoto , Kenta Takahashi
IPC分类号： B23K26/36 , B23K26/00 , B23K26/08 , B23K26/10 , B23K26/38 , B23K26/40 , H01L21/302
CPC分类号： B23K26/40 , B23K26/0006 , B23K26/0617 , B23K26/0869 , B23K26/10 , B23K26/36 , B23K26/361 , B23K26/364 , B23K26/38 , B23K26/53 , B23K26/57 , B23K2103/50 , B23K2103/56 , H01L21/302
摘要： There is obtained a laser processing method by which an excellent shape of a cut surface can be achieved and an increase in cost can be suppressed. A laser processing method includes the steps of: preparing a material to be processed; and forming a modified area in the material to be processed, by irradiating the material to be processed with laser beam. In the aforementioned step, pulsed laser beam having a continuous spectrum is focused with a lens, thereby forming a focusing line constituted by a plurality of focuses that are obtained by predetermined bands forming the continuous spectrum of the laser beam, and the material to be processed is irradiated with the laser beam such that at least a part of the focusing line is located on a surface of the material to be processed, thereby forming the modified area on an axis of the focusing line.
摘要翻译：获得能够实现切割面的优良形状并且可以抑制成本增加的激光加工方法。激光加工方法包括以下步骤：准备待加工材料; 并且通过用激光束照射被处理材料，在被处理材料中形成改质区域。在上述步骤中，具有连续光谱的脉冲激光束与透镜聚焦，从而形成由通过形成激光束的连续光谱的预定带获得的多个聚焦构成的聚焦线，以及待处理的材料用激光束照射使得聚焦线的至少一部分位于待处理材料的表面上，从而在聚焦线的轴上形成改质区域。

59. 发明授权

US08902940B2 Light source control method 有权
标题翻译：光源控制方式
公开(公告)号：US08902940B2
公开(公告)日：2014-12-02
申请号：US13477536
申请日：2012-05-22
申请人： Motoki Kakui , Shinobu Tamaoki
发明人： Motoki Kakui , Shinobu Tamaoki
IPC分类号： H01S3/10 , H01S3/067 , B23K26/06 , H01S3/094 , H01S3/16 , H01S5/068 , H01S3/00 , H01S5/062 , H01S3/17
CPC分类号： H01S3/06758 , B23K26/0622 , H01S3/0057 , H01S3/0064 , H01S3/0078 , H01S3/094003 , H01S3/094061 , H01S3/10015 , H01S3/1618 , H01S3/1693 , H01S3/176 , H01S5/06216 , H01S5/06804
摘要： The present invention relates to a light source control method capable of decreasing the dependence of a pulse width (FWHM) of an output pulsed light on a repetition frequency. A pulsed light source has an MOPA structure, and has a seed light source and an optical fiber amplifier. The seed light source includes a semiconductor laser which is directly modulated and outputs a pulsed light. By adjusting a temperature of the seed light source and a pumping light power of the optical fiber amplifier, a predetermined full width half maximum of a pulse at a predetermined repetition frequency is implemented for the pulsed light outputted from the optical fiber amplifier.
摘要翻译：本发明涉及能够降低输出脉冲光的脉冲宽度（FWHM）对重复频率的依赖性的光源控制方法。脉冲光源具有MOPA结构，并具有种子光源和光纤放大器。种子光源包括直接调制并输出脉冲光的半导体激光器。通过调整种子光源的温度和光纤放大器的泵浦光功率，对于从光纤放大器输出的脉冲光，实施预定重复频率的脉冲的预定全宽度半值。

60. 发明授权

US08599888B2 Pulse light source 有权
标题翻译：脉冲光源
公开(公告)号：US08599888B2
公开(公告)日：2013-12-03
申请号：US13604127
申请日：2012-09-05
申请人： Motoki Kakui
发明人： Motoki Kakui
IPC分类号： H01S3/10
CPC分类号： H01S5/0683 , H01S3/0078 , H01S3/06754 , H01S3/094061 , H01S3/1618 , H01S3/2308 , H01S5/024 , H01S5/0612 , H01S5/06216
摘要： The pulse light source comprises a seed light source, a first YbDF, a band-pass filter, a second YbDF, and a third YbDF, and has the MOPA structure. The band-pass filter inputs pulse light which is outputted from the seed light source and amplified by the first stage YbDF, and outputs, while separating a wavelength band of the inputted pulse light into a shorter wavelength side and a longer wavelength side with reference to a peak wavelength of the inputted pulse light, the attenuated pulse light after attenuating the optical power on one side more than the optical power on the other side between the shorter and longer wavelength sides.
摘要翻译：脉冲光源包括种子光源，第一YbDF，带通滤光器，第二YbDF和第三YbDF，并且具有MOPA结构。带通滤波器输入从种子光源输出并被第一级YbDF放大的脉冲光，并输出，将输入的脉冲光的波长带分离成短波长侧和较长波长侧，参照输入的脉冲光的峰值波长，衰减一方的光功率的衰减脉冲光比短波长侧和长波长侧的另一侧的光功率更大。

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