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1. 发明公开

EP1170628A4 RAMAN AMPLIFIER 审中-公开
标题翻译：喇曼放大器
公开(公告)号：EP1170628A4
公开(公告)日：2006-01-11
申请号：EP01900671
申请日：2001-01-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： EMORI YOSHIHIRO , NAMIKI SHU
IPC分类号： H01S3/094 , H01S3/23 , H01S3/30 , H04B10/291 , G02F1/35
CPC分类号： H04B10/2916 , H01S3/06766 , H01S3/0677 , H01S3/09408 , H01S3/094096 , H01S3/10007 , H01S3/302 , H01S2301/04
摘要： In a Raman amplifier using three or more pumping wavelengths, when the pumping wavelengths are divided into a short wavelength side group and a long wavelength side group at the boundary of the pumping wavelength having the longest interval between the adjacent wavelengths, the short wavelength side group includes two or more pumping wavelengths having intervals therebetween which are substantially equidistant, and the long wavelength side group is constituted by two or less pumping wavelengths. When a certain pumping wavelength is defined as a first channel and pumping wavelengths which are spaced apart from each other by about 1 THz from the certain pumping wavelength toward a long wavelength side are defined as second to n-th channels, respectively, pump lights having wavelengths corresponding to the first to n-th channels are multiplexed, and pump light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the long wavelength side is further multiplexed with the said multiplexed pump light, and resultant pump light is used as pump source. Pump lights of all of the wavelengths corresponding to the channels other than (n-1)th and (n-2)th channels are multiplexed with each other, and resultant pump light is used as pump source. Pump lights of all of the wavelengths corresponding to the channels other than (n-2)th and (n-3)th channels are multiplexed with each other, and resultant pump light is used as pump source.

2. 发明公开

EP1018666A4 RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD 有权
标题翻译： RAMAN放大器，光FOR之间的拉曼增益助推器和方法
公开(公告)号：EP1018666A4
公开(公告)日：2004-09-01
申请号：EP99931502
申请日：1999-07-23
申请人： FURUKAWA ELECTRIC CO LTD
发明人： AKASAKA YOUICHI , EMORI YOSHIHIRO , NAMIKI SHU
IPC分类号： H01S3/067 , H01S3/094 , H01S3/23 , H01S3/30 , H04B10/291 , G02F1/35 , H04B10/17
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/06758 , H01S3/0912 , H01S3/094011 , H01S3/094015 , H01S3/094096 , H01S3/10007 , H01S3/10015 , H01S3/2375 , H01S3/2383 , H01S2301/04 , H04B10/2916
摘要： A Raman amplifier comprises a pumping light producing means (1) for producing pumping lights. The pumping lights are multiplexed with a signal light propagated through an optical fiber (2) so as to give the signal light a Raman gain. The means (1) is constituted of a semiconductor laser of Fabri-Perot, DFB, or DBR type and an MOPA (3). The center wavelengths of the pumping lights are different from each other, and the intervals between them are 6 nm to 35 nm. An optical repeater provided in an optical fiber transmission line (8) compensates the loss caused by the optical fiber transmission line (8) and includes the Raman amplifier (9) used for the compensation. A Raman amplification method for Raman-amplifying a signal light by sending the signal light and pumping lights having mutually different center wavelengths through an optical fiber serving as a Raman-amplification medium, in which the power of the pumping light having a shorter wavelength is higher.

3. 发明公开

EP1102114A4 RAMAN AMPLIFICATION SYSTEM AND OPTICAL SIGNAL TRANSMISSION METHOD USING THE SAME 有权
标题翻译：拉曼增益系统和光信号传输中，使用SAME
公开(公告)号：EP1102114A4
公开(公告)日：2005-05-18
申请号：EP00931601
申请日：2000-05-29
申请人： FURUKAWA ELECTRIC CO LTD
发明人： EMORI YOSHIHIRO , NAMIKI SHU
IPC分类号： H01S3/094 , H01S3/30 , H04B10/291 , G02F1/35 , H04B10/17
CPC分类号： H04B10/2916 , H01S3/094011 , H01S3/302
摘要： First pumping light for Raman-amplifying signal light is inputted to the output end of the signal light, and second pumping light used for Raman-amplifying the first pumping light and having a wavelength shorter than that of the first pumping light is inputted to the input end of the signal light. The second pumping light is also inputted to the output end of the signal light. The first pumping light is also inputted to the input end of the signal light. The Raman amplification band of the second pumping light is made not to be overlapped with that of the signal light. The wavelength of the second pumping light is shorter than that of the first pumping light by the Raman shift of the amplifying optical fiber. The light source of either the first or second pumping light or both the light sources of them are multiplex light sources. The first pumping light is emitted from a semiconductor laser. Third pumping light for Raman-amplifying the second pumping light is directed to an optical transmission line. The signal light is transmitted through a transmission line using the Raman amplifying system.

4. 发明公开

EP1037337A4 OPTICAL AMPLIFIER 有权
标题翻译： OPTISCHERVERSTÄRKER
公开(公告)号：EP1037337A4
公开(公告)日：2005-05-18
申请号：EP99970215
申请日：1999-10-01
申请人： FURUKAWA ELECTRIC CO LTD
发明人： OGINO ATSUSHI , FUKUSHIMA MASARU , EMORI YOSHIHIRO , OGOSHI HARUKI , TASHIRO YOSHIO
IPC分类号： H01S3/067 , H01S3/10 , H01S3/13 , H01S3/131 , H04B10/294
CPC分类号： H04B10/2941 , H01S3/06758 , H01S3/10023 , H01S3/1301 , H01S2301/06
摘要： An optical amplifier having a series of optical fibers to which a rare earth element is added comprises one or more variable light-attenuating means and attenuation control means for varying the light attenuation of the variable light-attenuating means according to the temperature of the optical fibers or of the environment. An optical amplifier, in another aspect, having a series of optical fibers to which a rare earth element is added comprises a replaceable optical part, one or more variable light-attenuating means, and attenuation control means for varying the light attenuation of the variable light-attenuating means according to the temperature of the optical fibers or of the environment. An optical amplifier, in further another aspect, having a series of optical fibers to which a rare earth element is added comprises one or more externally-controllable variable light-attenuating means the light attenuation by which is changed with the intensities of the input and output signal lights of the optical amplifier.
摘要翻译：具有添加有稀土元素的一系列光纤的光学放大器包括一个或多个可变光衰减装置和衰减控制装置，用于根据光纤的温度改变可变光衰减装置的光衰减或环境。另一方面，一种光学放大器，具有添加稀土元素的一系列光纤，包括可更换光学部件，一个或多个可变光衰减装置以及衰减控制装置，用于改变可变光的光衰减 - 根据光纤或环境温度的衰减装置。另一方面，具有添加了稀土元素的一系列光纤的光学放大器包括一个或多个可外部控制的可变光衰减装置，其光衰减随着输入和输出的强度而改变光放大器的信号灯。

5. 发明公开

EP2666578A4 FIBER LASER APPARATUS AND METHOD FOR ALIGNING LASER LIGHT IRRADIATION POSITION 有权
标题翻译： FASERLASERVORRICHTUNG UND VERFAHREN ZUM AUSRICHTEN EINER LASERLICHTSTRAHLENPOSITION
公开(公告)号：EP2666578A4
公开(公告)日：2017-06-21
申请号：EP12736446
申请日：2012-01-17
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KASHIWAGI KOSUKE , FUJISAKI AKIRA , EMORI YOSHIHIRO
IPC分类号： B23K26/02 , B23K26/042 , B23K26/08 , H01S3/00 , H01S3/06 , H01S3/094
CPC分类号： H01S3/0675 , B23K26/042 , H01S3/067 , H01S3/06754 , H01S3/094003 , H01S3/09415 , H01S3/10038 , H01S3/2375 , H01S3/2391
摘要： In order to perform alignment accurately in a fiber laser apparatus that irradiates invisible laser light, a fiber laser apparatus 1 that generates invisible laser light using an amplification optical fiber (15) having a single-mode core and outputs the invisible laser light via an output optical fiber (34) is provided that includes a visible laser light source (11) that generates visible laser light, an introducing section (30, 31) that introduces the visible laser light generated by the visible laser light source into a core of one of the amplification optical fiber (15) and the output optical fiber, and a drive unit (40) that drives, in a case of performing alignment of an irradiation position of the invisible laser light with respect to a workpiece, the visible laser light source and emits the visible laser light via the core of the output optical fiber.
摘要翻译：为了在照射不可见激光的光纤激光装置中精确地进行对准，使用具有单模型芯的放大光纤（15）产生不可见激光并通过输出端输出不可见激光的光纤激光装置1 提供包括产生可见激光的可见激光光源（11）的光纤（34），将由可见激光光源产生的可见激光引入到光纤中的一个的核心的引入部分（30,31）放大用光纤15和输出用光纤，以及驱动部40，其在将不可见激光的照射位置相对于工件进行了对准的情况下，驱动可见激光光源和通过输出光纤的芯发射可见激光。

6. 发明公开

EP2648291A4 FIBER LASER APPARATUS, AND METHOD OF DETECTING ABNORMALITY OF FIBER LASER APPARATUS 审中-公开
公开(公告)号：EP2648291A4
公开(公告)日：2018-04-04
申请号：EP11844181
申请日：2011-11-29
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MIYATO TAIZO , KASHIWAGI KOSUKE , EMORI YOSHIHIRO , FUJISAKI AKIRA
IPC分类号： H01S3/06 , H01S3/00 , H01S3/067 , H01S3/094 , H01S3/10 , H01S3/131
CPC分类号： H01S3/10015 , H01S3/0014 , H01S3/067 , H01S3/094007 , H01S3/094011 , H01S3/10069 , H01S3/1312
摘要： It is an object of the invention to positively detect a failure that has occurred in a fiber. A fiber laser apparatus 1 in which pump light is introduced into an optical fiber to generate laser light is characterized by including a detecting section (PD 50) that detects signal light leaking out from a core of the optical fiber as leakage signal light, a determining section (control unit 40) that determines that, in a case where there is a decrease in an intensity of the leakage signal light detected in the detecting section, a failure of the fiber has occurred, and a stopping section (pumping LD driving power source) that stops, in a case where the determining section has determined that a failure of the fiber has occurred, the introduction of the pump light into the optical fiber.

7. 发明公开

EP3082205A4 LASER DEVICE AND OPTICAL FIBER LASER 有权转让
标题翻译： LASERVORRICHTUNG UND GLASFASERLASER
公开(公告)号：EP3082205A4
公开(公告)日：2017-08-02
申请号：EP14869283
申请日：2014-12-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KASHIWAGI KOUSUKE , EMORI YOSHIHIRO , TANAKA KANJI
IPC分类号： H01S3/094 , G02B6/42 , H01S3/042 , H01S3/067 , H01S3/0941 , H01S5/022 , H01S5/024 , H01S5/40
CPC分类号： G02B6/29398 , G02B6/04 , G02B6/2938 , G02B6/3801 , G02B6/4201 , G02B6/4268 , G02B6/4478 , H01S3/042 , H01S3/06704 , H01S3/0675 , H01S3/06754 , H01S3/094007 , H01S3/094053 , H01S3/094069 , H01S3/09408 , H01S3/09415 , H01S5/02248 , H01S5/02284 , H01S5/02469 , H01S5/4012 , H01S5/4025

8. 发明公开

EP1577704A4 LIGHT SOURCE IN OPTICAL TRANSMISSION SYSTEM, WAVEFORM SHAPER, OPTICAL PULSE TRAIN GENERATOR, AND OPTICAL REPRODUCTION SYSTEM 审中-公开
标题翻译：光源的光传输系统，高频变压器，光脉冲序列发生器和光学重放系统
公开(公告)号：EP1577704A4
公开(公告)日：2008-01-02
申请号：EP03775860
申请日：2003-11-21
申请人： FURUKAWA ELECTRIC CO LTD
发明人： IGARASHI KOJI , EMORI YOSHIHIRO , OGURI ATSUSHI , NAMIKI SHU , ASO OSAMU , TADAKUMA MASATERU
IPC分类号： G02F1/35 , G02F1/365 , H01S5/062 , H04B10/18 , H01S3/30
CPC分类号： G02F1/365 , G02F1/3513 , G02F2203/17 , G02F2203/26 , H01S5/0623 , H04B10/25077 , H04B10/291
摘要： A pulse train generator comprising a 2-mode beat signal light source for generating a 2-mode beat signal, a soliton shaper for soliton-shaping the output light of the 2-mode beat signal light source and an adiabatic soliton compressor for performing adiabatic soliton compression of the output light of the soliton shaper. A waveform shaper used for the pulse train generator, having a structure in which highly-nonlinear optical transmission lines and low-nonlinear optical transmission lines having a nonlinear coefficient lower than that of the highly-nonlinear optical transmission lines and having a second-order dispersion value the absolute value of which is different from that of the high-linear optical transmission lines. A light source comprising continuous light sources at least one of which oscillates in a multimode, a multiplexer for multiplexing the output lights of the continuous light sources, and a nonlinear phenomenon producer for causing the output light of the multiplexer to produce a nonlinear phenomenon, so as to suppress SBS (stimulated Brillouin scattering).

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