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1. 发明公开

EP2164140A8 FIBER LASER HAVING EXCELLENT REFLECTED LIGHT RESISTANCE 有权转让
标题翻译：采用高阻反射光光纤激光器
公开(公告)号：EP2164140A8
公开(公告)日：2010-07-14
申请号：EP08790601.2
申请日：2008-06-25
申请人： FUJIKURA LTD.
发明人： KITABAYASHI, Tomoharu
IPC分类号： H01S3/06 , G02F1/35 , H01S3/108
CPC分类号： H01S3/06754 , H01S3/0078 , H01S3/06741 , H01S3/06779 , H01S3/1618 , H01S3/2375 , H01S3/302
摘要： An MO-PA fiber laser having a master oscillator; and a first power amplifier which uses as a gain medium, a rare earth-doped optical fiber which is connected to a later stage of the master oscillator, wherein the MO-PA fiber laser has a wavelength conversion portion between the master oscillator and the power amplifier, and has a wavelength filter between the wavelength conversion portion and the master oscillator which only allows wavelength components of pulse light emitted from the master oscillator to pass, thereby making it possible to prevent breakage to a fiber laser which is caused by reflection light without using high-cost optical components.

2. 发明授权

EP2249443B1 OPTICAL FIBER LASER 有权转让
公开(公告)号：EP2249443B1
公开(公告)日：2020-07-08
申请号：EP09712490.3
申请日：2009-02-19
申请人： FUJIKURA LTD.
发明人： KITABAYASHI, Tomoharu
IPC分类号： H01S3/067 , G02B6/00 , G02B6/02 , H01S3/23 , H01S3/094

3. 发明公开

EP2106628A9 FIBER LASER 有权转让
标题翻译：光纤激光器
公开(公告)号：EP2106628A9
公开(公告)日：2010-04-21
申请号：EP08711047.4
申请日：2008-02-08
申请人： Fujikura, Ltd.
发明人： KITABAYASHI, Tomoharu , SAKAI, Tetsuya , NAKAI, Michihiro
IPC分类号： H01S3/06 , G02F1/35 , H01S3/30
CPC分类号： H01S3/2333 , H01S3/0064 , H01S3/06758 , H01S3/2375 , H01S3/302
摘要： This fiber laser is provided with: a signal light source that outputs a signal light; a rare earth-doped fiber that amplifies and outputs the signal light from the signal light source; a Raman amplifying fiber that is routed as a portion of an optical transmission path in order to output the output light from the rare earth-doped fiber to an outside thereof; and a wavelength selecting element that is provided in the optical transmission path from the Raman amplifying fiber to the signal light source and does not allow transmission of a Stokes light that is generated in the Raman amplifying fiber.

4. 发明公开

EP2375281A1 OPTICAL MULTIPLEXER AND FIBER LASER 审中-公开
标题翻译： OPTISCHER MULTIPLEXER UND FASERLASER
公开(公告)号：EP2375281A1
公开(公告)日：2011-10-12
申请号：EP10733403.9
申请日：2010-01-08
申请人： Fujikura, Ltd.
发明人： KITABAYASHI, Tomoharu
IPC分类号： G02F1/35 , G02F1/365 , H01S3/06
CPC分类号： H01S3/302 , G02F1/353 , G02F2203/585 , H01S3/06729 , H01S3/06741 , H01S3/094096 , H01S3/10015 , H01S3/1618 , H04B10/2916
摘要： An object of the present invention is to provide an optical multiplexer and a fiber laser for obtaining high-output light of a single wavelength. The optical multiplexer according to the present invention is provided with input units 11 and 12, a wavelength multiplexing unit 14, a multiplexed light converting unit 15 and an output unit 16. Lights of a plurality of wavelengths λ 1 and λ 2 are input to the input units 11 and 12, respectively. The wavelength multiplexing unit 14 wavelength-multiplexes the lights of the plurality of wavelengths λ 1 and λ 2 input from the input units 11 and 12 different for each wavelength to one multiplexed light. By wavelength-multiplexing, it is possible to multiplex without a loss. The multiplexed light converting unit 15 generates Raman light with at least one wavelength out of the wavelengths λ 1 and λ 2 included in the multiplexed light from the wavelength multiplexing unit 14 and converts the multiplexed light of the wavelengths λ 1 and λ 2 from the wavelength multiplexing unit 14 to light of a single wavelength λ m included in a wavelength band of the Raman light.
摘要翻译：本发明的目的是提供一种用于获得单一波长的高输出光的光学多路复用器和光纤激光器。根据本发明的光复用器设置有输入单元11和12，波长复用单元14，多路复用光转换单元15和输出单元16.多个波长»1和»2的光被输入到输入单元11和12。波长复用单元14将对于每个波长的输入单元11和12输入的多个波长»1和»2的光进行波长复用为一个复用光。通过波长复用，可以无损耗地进行复用。复用光转换单元15从波长多路复用单元14的复用光中产生的波长»1和»2中的至少一个波长产生拉曼光，并将波长»1和»2的多路复用光从波长复用单元14对包括在拉曼光的波长带中的单个波长λm进行光照射。

5. 发明公开

EP1947065A1 RARE EARTH-DOPED CORE OPTICAL FIBER AND METHOD FOR MANUFACTURE THEREOF 审中-公开
标题翻译： LICHTLEITER MIT SELTENERDDTITITEM KERN UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP1947065A1
公开(公告)日：2008-07-23
申请号：EP06832391.4
申请日：2006-10-26
申请人： Fujikura, Ltd.
发明人： IKEDA, Masashi , YAMADA, Naritoshi , HIMENO, Kuniharu , NAKAI, Michihiro , KITABAYASHI, Tomoharu
IPC分类号： C03C13/04 , C03B37/018 , C03B37/027 , G02B6/00 , G02B6/036 , H01S3/06
CPC分类号： H01S3/06716 , C03B37/01838 , C03B37/01853 , C03B2201/12 , C03B2201/31 , C03B2201/36 , C03B2203/23 , C03C13/045 , C03C13/046 , G02B6/03633 , G02B6/03638
摘要： A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the light absorption band which appears around a wavelength of 976 nm in the light absorption band by ytterbium contained in the core shows a peak light absorption rate of 800 dB/m or less.
摘要翻译：本发明的稀土掺杂芯光纤包括包含至少含有铝和镱的二氧化硅玻璃的芯和在芯周围设置的包层，其包含比芯的折射率低的石英玻璃，其中芯的铝浓度为2质量％以上，并且以这样的浓度将镱掺杂到芯中，使得在芯中包含的镱的光吸收带中出现在波长976nm附近的光吸收带表现出峰值光吸收率为800dB / m以下。

6. 发明授权

EP2164140B1 FIBER LASER HAVING EXCELLENT REFLECTED LIGHT RESISTANCE 有权转让
标题翻译：光纤激光器具有优异的反射光阻
公开(公告)号：EP2164140B1
公开(公告)日：2017-08-02
申请号：EP08790601.2
申请日：2008-06-25
申请人： FUJIKURA LTD.
发明人： KITABAYASHI, Tomoharu
IPC分类号： H01S3/067 , G02F1/35 , H01S3/108 , H01S3/30 , H01S3/16 , H01S3/00 , H01S3/23
CPC分类号： H01S3/06754 , H01S3/0078 , H01S3/06741 , H01S3/06779 , H01S3/1618 , H01S3/2375 , H01S3/302

7. 发明授权

EP2106628B1 FIBER LASER 有权转让
标题翻译：光纤激光器
公开(公告)号：EP2106628B1
公开(公告)日：2016-09-07
申请号：EP08711047.4
申请日：2008-02-08
申请人： Fujikura Ltd.
发明人： KITABAYASHI, Tomoharu , SAKAI, Tetsuya , NAKAI, Michihiro
IPC分类号： H01S3/06 , G02F1/35 , H01S3/30
CPC分类号： H01S3/2333 , H01S3/0064 , H01S3/06758 , H01S3/2375 , H01S3/302

8. 发明公开

EP2164140A1 FIBER LASER HAVING EXCELLENT REFLECTED LIGHT RESISTANCE 有权转让
公开(公告)号：EP2164140A1
公开(公告)日：2010-03-17
申请号：EP08790601.2
申请日：2008-06-25
申请人： Fujikura, Ltd.
发明人： KITABAYASHI, Tomoharu
IPC分类号： H01S3/06 , G02F1/35 , H01S3/108
CPC分类号： H01S3/06754 , H01S3/0078 , H01S3/06741 , H01S3/06779 , H01S3/1618 , H01S3/2375 , H01S3/302
摘要： An MO-PA fiber laser having a master oscillator; and a first power amplifier which uses as a gain medium, a rare earth-doped optical fiber which is connected to a later stage of the master oscillator, wherein the MO-PA fiber laser has a wavelength conversion portion between the master oscillator and the power amplifier, and has a wavelength filter between the wavelength conversion portion and the master oscillator which only allows wavelength components of pulse light emitted from the master oscillator to pass, thereby making it possible to prevent breakage to a fiber laser which is caused by reflection light without using high-cost optical components.

9. 发明公开

EP2249443A1 OPTICAL FIBER LASER 有权转让
标题翻译： FASEROPTISCHER激光
公开(公告)号：EP2249443A1
公开(公告)日：2010-11-10
申请号：EP09712490.3
申请日：2009-02-19
申请人： Fujikura, Ltd.
发明人： KITABAYASHI, Tomoharu
IPC分类号： H01S3/06 , G02B6/00 , G02B6/024 , G02B6/036
CPC分类号： H01S3/2308 , G02B6/02338 , G02B6/02357 , G02B6/0238 , H01S3/06729 , H01S3/06741 , H01S3/06754 , H01S3/06791 , H01S3/09408
摘要： The optical fiber laser of the present invention is an optical fiber laser including: a master oscillator which is a laser oscillator producing a seed beam; and a power amplifier which is an optical amplifier connected to a subsequent stage of the master oscillator and amplifying and outputting a laser beam emitted from the master oscillator, in which the power amplifier includes: a plurality of excitation light sources; excitation ports each of which is connected to the excitation light sources and which an excitation light emitted from each of the excitation light source enters; a signal port which a laser beam emitted from the master oscillator enters; an optical coupler with an exit port that outputs the excitation lights from the excitation ports together with the laser beam from the signal port; and an optical fiber connected to the exit port, in which the optical fiber is a photonic bandgap fiber, and in which the optical fiber has a loss wavelength characteristic in that a photonic bandgap region is narrower than a gain wavelength band in a graph with an axis of abscissa representing a wavelength and an axis of ordinate representing a loss amount.
摘要翻译：本发明的光纤激光器是一种光纤激光器，包括：主振荡器，其是产生种子束的激光振荡器; 以及功率放大器，其是连接到所述主振荡器的后级的光放大器，并且放大并输出从所述主振荡器发射的激光束，其中所述功率放大器包括：多个激发光源; 激励端口各自连接到激发光源，并且从每个激发光源发射的激发光线进入; 从主振荡器发射的激光束进入的信号端口; 具有出射端口的光耦合器，其与来自信号端口的激光束一起从激励端口输出激发光; 以及连接到出射口的光纤，其中光纤是光子带隙光纤，并且其中光纤具有损耗波长特性，因为光子带隙区域比图中的增益波长带窄横轴表示波长，纵轴表示损失量。

10. 发明公开

EP2154759A8 FIBER LASER 审中-公开
公开(公告)号：EP2154759A8
公开(公告)日：2010-10-06
申请号：EP08752713.1
申请日：2008-05-14
申请人： FUJIKURA LTD.
发明人： KITABAYASHI, Tomoharu
IPC分类号： H01S3/06
CPC分类号： H01S3/2308 , A61B18/22 , H01S3/0064 , H01S3/06754 , H01S3/094003 , H01S3/09415 , H01S2301/02
摘要： A fiber laser of an MOPA type includes an MO which is a laser oscillator for generating seed light, a PA which is a light amplifier connected to a rear stage of the MO, for amplifying and outputting laser light emitted from the MO, and a reflection device which is provided between the MO and the PA. According to the present invention, the MOPA type fiber laser can decrease the peak value of the pulse which is emitted toward the MO or the pump light source by self-oscillation or reflection, and makes it unlikely that the pump light source or the MO will be damaged.

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