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1. 发明授权

US07079311B2 Optical amplifier and optical communication system including the same 失效
公开(公告)号：US07079311B2
公开(公告)日：2006-07-18
申请号：US10978473
申请日：2004-11-02
申请人： Motoki Kakui , Masakazu Shigehara
发明人： Motoki Kakui , Masakazu Shigehara
IPC分类号： H01S3/14
CPC分类号： H04B10/2941
摘要： The present invention relates to an optical amplifier (TDFA) having a configuration which enables to reduce temperature dependence of the gain with reduced power consumption and simple control. The optical amplifier includes, in the order from an input port to an output port, an optical isolator, an optical coupler, an optical amplification fiber, an optical coupler, an optical isolator, an optical gain equalizing filter, a variable optical attenuator, an optical isolator, an optical coupler, an amplification fiber, an optical coupler, and an optical isolator. At least a core region of the optical amplification fiber is doped with Tm element, and signal light in a predetermined wavelength range is amplified by supply of pumping light. The gain equalizing fiber has a loss spectrum which shifts toward the short wavelength side as the temperature of the optical waveguide is higher, thereby equalizing the optical amplification gain of the signal light in the optical amplification fiber.

2. 发明授权

US06819482B2 Optical amplifier and optical communication system including the same 失效
标题翻译：光放大器和光通信系统包括相同
公开(公告)号：US06819482B2
公开(公告)日：2004-11-16
申请号：US10292633
申请日：2002-11-13
申请人： Motoki Kakui , Masakazu Shigehara
发明人： Motoki Kakui , Masakazu Shigehara
IPC分类号： H01S300
CPC分类号： H04B10/2941
摘要： The present invention relates to an optical amplifier (TDFA) having a configuration which enables to reduce temperature dependence of the gain with reduced power consumption and simple control. The optical amplifier includes, in the order from an input port to an output port, an optical isolator, an optical coupler, an optical amplification fiber, an optical coupler, an optical isolator, an optical gain equalizing filter, a variable optical attenuator, an optical isolator, an optical coupler, an amplification fiber, an optical coupler, and an optical isolator. At least a core region of the optical amplification fiber is doped with Tm element, and signal light in a predetermined wavelength range is amplified by supply of pumping light. The gain equalizing fiber has a loss spectrum which shifts toward the short wavelength side as the temperature of the optical waveguide is higher, thereby equalizing the optical amplification gain of the signal light in the optical amplification fiber.
摘要翻译：本发明涉及一种光放大器（TDFA），其具有能够以降低的功耗和简单的控制来降低增益的温度依赖性的结构。光放大器按照从输入端口到输出端口的顺序包括光隔离器，光耦合器，光放大光纤，光耦合器，光隔离器，光增益均衡滤波器，可变光衰减器，光隔离器，光耦合器，放大光纤，光耦合器和光隔离器。光放大光纤的至少核心区域掺杂有Tm元件，并且通过提供泵浦光来放大预定波长范围的信号光。增益均衡光纤具有随着光波导的温度较高而向短波长侧移动的损耗谱，从而使光放大光纤中的信号光的光放大增益均衡。

3. 发明授权

US06490078B2 Optical fiber for optical amplifier, optical fiber amplifier and optical fiber laser 有权
标题翻译：光放大器光纤，光纤放大器和光纤激光器
公开(公告)号：US06490078B2
公开(公告)日：2002-12-03
申请号：US09809301
申请日：2001-03-16
申请人： Tadashi Enomoto , Masahiro Takagi , Yuichi Ohga , Motoki Kakui , Shinji Ishikawa , Masakazu Shigehara , Shinji Endo
发明人： Tadashi Enomoto , Masahiro Takagi , Yuichi Ohga , Motoki Kakui , Shinji Ishikawa , Masakazu Shigehara , Shinji Endo
IPC分类号： G02B634
CPC分类号： H01S3/06708 , H01S3/06716 , H01S3/06729 , H01S3/06754
摘要： The present invention relates to an OFA having a high signal gain, easily manufactured, having a high mechanical strength, having a small splice loss with respect to other optical fibers, and rarely encountering the occurrence of noise at a signal wavelength. The OFA according to the present invention has a function of amplifying signals propagating therethroug by pumping light supplied thereto, and comprises, at least, a core region, an inner cladding region provided on the periphery of the core region, an outer cladding region provided on the periphery of the inner cladding region, and one or more node coupling gratings. An element for signal amplification is added to at least the core region. The core region has a structure ensuring a core mode with respect to the signals, while the inner cladding region has a structure ensuring a multi-mode with respect to the pumping light. Each of the mode coupling gratings passes core mode signals therethrough, and induces a mode coupling between the inner cladding mode and the core mode with respect to the pumping light.
摘要翻译：本发明涉及具有高机械强度，易于制造的具有高信号增益，相对于其它光纤具有小的接合损耗，并且很少遇到在信号波长处的噪声的发生的OFA。根据本发明的OFA具有通过泵送供给到其上的光来传播传播的信号的功能，并且至少包括芯区域，设置在芯区域周围的内包层区域，设置在芯区域内包层区域的周边，以及一个或多个节点耦合光栅。用于信号放大的元件至少加到核心区域。芯区域具有确保相对于信号的芯模式的结构，而内包层区域具有确保相对于泵浦光的多模式的结构。每个模式耦合光栅通过芯模信号，并且相对于泵浦光在内包层模式和芯模之间引起模耦合。

4. 发明授权

US6144784A Optical input/output module and light-reflecting device 失效
标题翻译：光输入/输出模块和光反射装置
公开(公告)号：US6144784A
公开(公告)日：2000-11-07
申请号：US209419
申请日：1998-12-11
申请人： Masakazu Shigehara , Shinji Ishikawa , Motoki Kakui , Hiroo Kanamori , Masayuki Nishimura
发明人： Masakazu Shigehara , Shinji Ishikawa , Motoki Kakui , Hiroo Kanamori , Masayuki Nishimura
IPC分类号： G02F1/31 , G02B6/293 , G02B6/34 , H04B10/27 , H04B10/29 , H04J14/00 , H04J14/02 , G02B6/28
CPC分类号： G02B6/2932 , G02B6/29383 , H04J14/0201
摘要： The present invention relates to an optical I/O module and light-reflecting device comprising a structure excellent in expandability having a high degree of freedom in designing. The optical I/O module according to the present invention comprises a directional coupler having, at least, input and output ports for constituting a part of a transmission line and an intermediate port for constituting a branch; and a light-reflecting device, optically connected to the intermediate port, for transmitting therethrough a specific wavelength. This structure can realize various configurations which allow a specific wavelength to be dropped from the transmission line and to be added to the transmission line, without influencing the configuration of the transmission line.
摘要翻译：本发明涉及一种光学I / O模块和光反射装置，其包括在设计中具有高自由度的可扩展性优异的结构。根据本发明的光I / O模块包括定向耦合器，至少具有用于构成传输线的一部分的输入和输出端口以及用于构成分支的中间端口; 以及光反射装置，光学连接到中间端口，用于透射特定波长。该结构可以实现允许特定波长从传输线路丢弃并被添加到传输线路的各种配置，而不影响传输线路的配置。

5. 发明授权

US06317538B1 Optical waveguide device and optical device having long-period grating 失效
标题翻译：具有长周期光栅的光波导器件和光学器件
公开(公告)号：US06317538B1
公开(公告)日：2001-11-13
申请号：US09206705
申请日：1998-12-07
申请人： Masakazu Shigehara , Masayuki Shigematsu , Motoki Kakui
发明人： Masakazu Shigehara , Masayuki Shigematsu , Motoki Kakui
IPC分类号： G02B634
CPC分类号： G02B6/0218 , G02B6/0208 , G02B6/02095
摘要： The present invention relates to an optical waveguide device having a plurality of long-period gratings, and an optical device equipped with the optical waveguide device. By providing a plurality of long-period gratings having loss wavelength characteristics different from each other, which fluctuate along with an environmental condition such as temperature or tension, within a core region of an optical waveguide device, the present invention enables the loss wavelength characteristic of the whole optical waveguide device to be regulated in response to the environmental change.
摘要翻译：本发明涉及具有多个长周期光栅的光波导器件，以及配备有该光波导器件的光学器件。通过提供多个具有彼此不同的损耗波长特性的长周期光栅，其与光波导器件的芯区域内的环境条件如温度或张力一起波动，本发明能够实现波长特性的损失整个光波导器件将根据环境变化进行调节。

6. 发明申请

US20050078357A1 Optical amplifier and optical communication system including the same 失效
标题翻译：光放大器和光通信系统包括相同
公开(公告)号：US20050078357A1
公开(公告)日：2005-04-14
申请号：US10978473
申请日：2004-11-02
申请人： Motoki Kakui , Masakazu Shigehara
发明人： Motoki Kakui , Masakazu Shigehara
IPC分类号： G02B6/00 , H01S3/06 , H01S3/067 , H01S3/10 , H01S3/00
CPC分类号： H04B10/2941
摘要： The present invention relates to an optical amplifier (TDFA) having a configuration which enables to reduce temperature dependence of the gain with reduced power consumption and simple control. The optical amplifier includes, in the order from an input port to an output port, an optical isolator, an optical coupler, an optical amplification fiber, an optical coupler, an optical isolator, an optical gain equalizing filter, a variable optical attenuator, an optical isolator, an optical coupler, an amplification fiber, an optical coupler, and an optical isolator. At least a core region of the optical amplification fiber is doped with Tm element, and signal light in a predetermined wavelength range is amplified by supply of pumping light. The gain equalizing fiber has a loss spectrum which shifts toward the short wavelength side as the temperature of the optical waveguide is higher, thereby equalizing the optical amplification gain of the signal light in the optical amplification fiber.
摘要翻译：本发明涉及一种光放大器（TDFA），其具有能够以降低的功耗和简单的控制来降低增益的温度依赖性的结构。光放大器按照从输入端口到输出端口的顺序包括光隔离器，光耦合器，光放大光纤，光耦合器，光隔离器，光增益均衡滤波器，可变光衰减器，光隔离器，光耦合器，放大光纤，光耦合器和光隔离器。光放大光纤的至少核心区域掺杂有Tm元件，并且通过提供泵浦光来放大预定波长范围的信号光。增益均衡光纤具有随着光波导的温度较高而向短波长侧移动的损耗谱，从而使光放大光纤中的信号光的光放大增益均衡。

7. 发明授权

US06867907B2 Pumping light source unit, raman amplifier, and optical transmission system 失效
标题翻译：泵浦光源单元，拉曼放大器和光传输系统
公开(公告)号：US06867907B2
公开(公告)日：2005-03-15
申请号：US10183366
申请日：2002-06-28
申请人： Masayuki Inoue , Motoki Kakui , Masakazu Shigehara
发明人： Masayuki Inoue , Motoki Kakui , Masakazu Shigehara
IPC分类号： G02F1/35 , H01S3/067 , H01S3/094 , H01S3/10 , H01S3/30 , H01S5/14 , H01S3/00
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094096 , H01S3/1003 , H01S3/302 , H01S5/146
摘要： The present invention relates to a pumping light source unit for Raman amplification and the like comprising a structure for improving the pumping light spectrum controllability so as to enable output signal light spectrum adjustment within an amplification wavelength band. The pumping light source unit comprises N (≧2) pumping light sources for outputting N channels of pumping light having respective wavelengths different from each other, a multiplexer for multiplexing the N channels of pumping light, and an output structure for supplying a Raman amplification optical fiber with the pumping light outputted from the multiplexer. In particular, at least one of the N pumping light sources includes a variable length pumping light source adapted to change the channel wavelength of pumping light outputted therefrom. This configuration makes it possible to adjust pumping light spectra, thereby improving the controllability of output signal light spectra (Raman gain spectra).
摘要翻译：本发明涉及一种用于拉曼放大等的泵浦光源单元，其包括用于提高泵浦光谱可控性的结构，以使得能够在放大波长带内进行输出信号光谱调节。泵浦光源单元包括N（> = 2）个泵浦光源，用于输出具有彼此不同的波长的N个泵浦光的通道;多路复用器，用于多路复用N个通道的泵浦光;以及输出结构，用于提供拉曼放大具有从多路复用器输出的泵浦光的光纤。特别地，N个抽运光源中的至少一个包括适于改变从其输出的泵浦光的通道波长的可变长度的泵浦光源。该配置使得可以调节泵浦光谱，从而提高输出信号光谱（拉曼增益光谱）的可控性。

8. 发明授权

US08369004B2 MOPA light source 失效
标题翻译： MOPA光源
公开(公告)号：US08369004B2
公开(公告)日：2013-02-05
申请号：US12790323
申请日：2010-05-28
申请人： Motoki Kakui
发明人： Motoki Kakui
IPC分类号： H01S3/101 , H01S3/067 , H01S3/30
CPC分类号： H01S3/302 , H01S3/06758 , H01S3/094061 , H01S3/09408 , H01S3/10023 , H01S3/1618 , H01S3/2316
摘要： The present invention relates to a MOPA light source capable of obtaining pulse output by wavelength-conversion of pulse light of fundamental light wave using a simple configuration, and suppressing optical output using a simple method when processing is not performed. The fundamental light wave outputted from a seed light source is amplified in an optical amplification fiber. The amplified fundamental light wave is inputted to one end of a passive optical fiber, and propagates in the passive optical fiber. In the passive optical fiber, stimulated Raman scattering occurs upon propagation of the fundamental light wave. The light of fundamental light wave and light of stimulated Raman-scattered components are outputted from the other end of the passive optical fiber. The light outputted from the passive optical fiber is collimated by a lens, and is then inputted to a branching filter. The light inputted to the branching filter is wavelength-separated into light of stimulated Raman-scattered components having wavelengths longer than that of the fundamental light wave, and light having wavelengths equal to or less than that of the fundamental light wave.
摘要翻译：本发明涉及一种能够通过简单的结构获得基波光脉冲光的波长转换的脉冲输出的MOPA光源，并且在不进行处理时通过简单的方法抑制光输出。从种子光源输出的基波光在光放大光纤中放大。放大的基波光被输入到无源光纤的一端，并在无源光纤中传播。在无源光纤中，受激拉曼散射在基波光的传播时发生。从被动光纤的另一端输出受激拉曼散射分量的基波光和光的光。从无源光纤输出的光被透镜准直，然后被输入到分支滤波器。输入到分波器的光被波长分离成具有比基波光波长长的波长的受激拉曼散射分量的光，以及具有等于或小于基波光波长的波长的光。

9. 发明授权

US08080773B2 Method and apparatus of measuring backward light, and laser processing method 有权
标题翻译：测量反光的方法和装置，以及激光加工方法
公开(公告)号：US08080773B2
公开(公告)日：2011-12-20
申请号：US12392331
申请日：2009-02-25
申请人： Shinobu Tamaoki , Motoki Kakui , Kazuo Nakamae
发明人： Shinobu Tamaoki , Motoki Kakui , Kazuo Nakamae
IPC分类号： G01J1/32
CPC分类号： G01J1/20 , B23K26/705
摘要： The present invention relates to a method of measuring backward light, which is constructed for checking, prior to laser processing, backward light that propagates backward through an isolator included in a laser processing apparatus. The present invention also relates to a laser processing method and the like. A laser processing apparatus has an optical head provided with a laser light source part, light guide, and isolator. The optical head has an emitting optical system, irradiation optical system, and light collecting optical system. The method of measuring backward light uses a photodetector to detect, from reference light introduced from a measurement light source into the optical head, the power of an optical component that has passed through the isolator, while changing the position of the measurement light source. The laser processing method performs laser processing by using the laser processing apparatus that has the optical head in which the arrangement of optical components is adjusted beforehand on the basis of the result of detection or result of measurement.
摘要翻译：本发明涉及一种测量向后光的方法，其被构造用于在激光加工之前检查通过包括在激光加工设备中的隔离器向后传播的向后光。本发明还涉及一种激光加工方法等。激光加工设备具有设置有激光光源部分，光导和隔离器的光学头。光头具有发射光学系统，照射光学系统和聚光光学系统。逆向光的测量方法使用光检测器，在测量光源的位置改变的同时，从测量光源引入光头的参考光检测已经通过隔离器的光学部件的功率。激光加工方法通过使用具有基于检测结果或测量结果预先调整光学部件的布置的光头的激光加工装置进行激光加工。

10. 发明授权

US08039778B2 Laser processing apparatus and laser processing method 有权
标题翻译：激光加工设备和激光加工方法
公开(公告)号：US08039778B2
公开(公告)日：2011-10-18
申请号：US12256974
申请日：2008-10-23
申请人： Motoki Kakui , Kazuo Nakamae , Shinobu Tamaoki
发明人： Motoki Kakui , Kazuo Nakamae , Shinobu Tamaoki
IPC分类号： G01J1/32
CPC分类号： B23K26/03 , B23K26/082 , B23K2101/32 , B23K2101/36
摘要： The present invention relates to a laser processing apparatus and the like having a structure for implementing at the same time both an efficient laser processing in the place where a laser beam is difficult to reach and a laser processing without damages in the place where the laser beam is easy to reach. This laser processing apparatus comprises a laser light source, an irradiation optical system applying a laser beam to an object while scanning the laser beam, a photo-detector detecting the laser beam applied from the irradiation optical system, and a control section of making switching between a continuous oscillation and a pulse oscillation of the laser beam at the laser light source. In particular, the control section makes a continuous oscillation of the laser beam with respect to the laser light source in the case in which the laser beam applied from the irradiation optical system is detected at the photo-detector; while it makes a pulse oscillation of the laser beam with respect to the laser light source in the case in which no laser beam applied from the irradiation optical system is detected at the photo-detector.
摘要翻译：激光加工装置本发明涉及一种激光加工装置等，其结构是同时实现在激光束难以到达的地方进行有效的激光加工，激光加工在激光加工的地方很容易到达。该激光加工装置包括：激光光源，在扫描激光束的同时向物体施加激光的照射光学系统;检测从照射光学系统施加的激光束的光检测器;以及控制部，在激光光源处的激光束的连续振荡和脉冲振荡。特别地，在从光检测器检测到从照射光学系统施加的激光束的情况下，控制部分使激光束相对于激光光源连续振荡; 而在光检测器未检测到从照射光学系统施加的激光束的情况下，激光束相对于激光光源的脉冲振荡。

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