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1. 发明公开

EP3627112A1 OPTICAL FIBER SENSOR 审中-公开
公开(公告)号：EP3627112A1
公开(公告)日：2020-03-25
申请号：EP18195646.7
申请日：2018-09-20
申请人： Koninklijke Philips N.V. , Fujikura Ltd.
发明人： HORIKX, Jeroen Jan Lambertus , 'T HOOFT, Gert Wim , VAN DUSSCHOTEN, Anna Hendrika , MATSUSHITA, Shingo , ICHII, Kentaro
IPC分类号： G01D5/353 , G01L1/24 , G02B6/02
摘要： The present invention relates to an optical fiber sensor for shape sensing, comprising an optical fiber, the optical fiber comprising a cladding (30") having a cladding refractive index, and a number of fiber cores (14"-20", 34" -38") embedded in the cladding (30") and extending along a longitudinal axis of the optical fiber, the number of fiber cores having a first subset of at least one first fiber core (14"-20") and a second subset of at least one second fiber core (34" -38"). The at least one first fiber core (14"-20") has a first core refractive index different from the cladding refractive index and a first core radius in direction transverse to the longitudinal axis, the at least one second fiber core (34" -38") has a second core refractive index different from the cladding refractive index and a second core radius transverse to the longitudinal axis. The second core refractive index and the second core radius of the at least one second fiber core (34" -38") differ from the first core refractive index and the first core radius such that a temperature sensitivity of the at least one second fiber core (34" -38") differs from the temperature sensitivity of the first fiber core (14"-20").

2. 发明公开

EP4300728A1 FIBER LASER 审中-实审
公开(公告)号：EP4300728A1
公开(公告)日：2024-01-03
申请号：EP21928062.5
申请日：2021-11-30
申请人： Fujikura Ltd.
发明人： NISHIMURA, Ryoichi , ICHII, Kentaro
IPC分类号： H01S3/067
摘要： Provided is a fiber laser which reduces the probability of a decrease in beam output power due to TMI and also reduces the probability of occurrence of stimulated Raman scattering. A fiber laser (1) includes: a gain fiber (11) having a core doped with Yb; and a forward pumping light source group (15a) capable of generating forward pumping light that is capable of being inputted into the gain fiber (11) and that belongs to a 976-nm band. An absorption amount of the forward pumping light in a section (I1) of the gain fiber (11), which is a section having a length of 1 m and including an end face on which the forward pumping light is incident, is not less than 253 W and not more than 1100 W.

3. 发明公开

EP2151900A1 OPTICAL COMMUNICATIONS MODULE, PROCESS FOR MANUFACTURING THE SAME, AND OPTICAL TRANSMITTER AND RECEIVER APPARATUS 有权
标题翻译：光通信模块，其制造工艺和光学发射器和接收器装置
公开(公告)号：EP2151900A1
公开(公告)日：2010-02-10
申请号：EP08711810.5
申请日：2008-02-22
申请人： Fujikura, Ltd.
发明人： TERADA, Yoshihiro , OHASHI, Masakazu , AZEGAMI, Koji , ICHII, Kentaro
IPC分类号： H01S5/022 , G02B6/42 , H01L31/0232 , H01L33/00
CPC分类号： G02B6/43 , G02B6/4202 , H01L2224/45144 , H01L2224/48091 , H01L2224/48247 , H01S5/02284 , Y10T29/49826 , H01L2924/00014 , H01L2924/00
摘要： A manufacturing method of an optical communication module for manufacturing the optical communication module, including the sequentially performed steps of: (1) mounting a light-emitting element and a light-receiving element on a side surface of a sub-mount substrate and mounting the sub-mount substrate on a printed circuit board such that the light-emitting and -receiving directions of the light-emitting element and light-receiving element are parallel to the printed circuit board; (2) aligning an optical waveguide; and (3) dropping resin solution on an area of the sub-mount substrate including an optical waveguide end and the light-emitting element or the light-receiving element, and curing the resin solution. According to the present invention, it is possible to provide an optical communication module which can be made thin, small and cheap.

4. 发明授权

EP2312348B1 YTTERBIUM-DOPED OPTICAL FIBER, FIBER LASER, AND FIBER AMPLIFIER 有权
标题翻译：掺镱光纤，光纤激光器和光纤放大器
公开(公告)号：EP2312348B1
公开(公告)日：2014-04-16
申请号：EP09804732.7
申请日：2009-08-04
申请人： Fujikura, Ltd.
发明人： TANIGAWA, Shoji , NAKAGUMA, Teruno , ARAI, Tomofumi , ICHII, Kentaro
IPC分类号： G02B6/28 , H01S3/067 , H01S3/16 , G02B6/02 , G02B6/024 , G02B6/036 , C03C13/04 , G02B6/028
CPC分类号： G02B6/02 , C03C13/046 , G02B6/02395 , G02B6/024 , G02B6/0285 , G02B6/03611 , G02B6/03633 , G02B6/03638 , G02B6/03644 , G02B6/0365 , G02B6/03661 , H01S3/06708 , H01S3/06716 , H01S3/0672 , H01S3/06729 , H01S3/06737 , H01S3/1618 , H01S3/1691 , H01S3/1693

5. 发明公开

EP2312348A1 YTTERBIUM-DOPED OPTICAL FIBER, FIBER LASER, AND FIBER AMPLIFIER 有权
标题翻译：掺镱光纤，光纤激光器和光纤放大器
公开(公告)号：EP2312348A1
公开(公告)日：2011-04-20
申请号：EP09804732.7
申请日：2009-08-04
申请人： Fujikura, Ltd.
发明人： TANIGAWA, Shoji , NAKAGUMA, Teruno , ARAI, Tomofumi , ICHII, Kentaro
IPC分类号： G02B6/02 , G02B6/024 , G02B6/036 , H01S3/06
CPC分类号： G02B6/02 , C03C13/046 , G02B6/02395 , G02B6/024 , G02B6/0285 , G02B6/03611 , G02B6/03633 , G02B6/03638 , G02B6/03644 , G02B6/0365 , G02B6/03661 , H01S3/06708 , H01S3/06716 , H01S3/0672 , H01S3/06729 , H01S3/06737 , H01S3/1618 , H01S3/1691 , H01S3/1693
摘要： An ytterbium-doped optical fiber includes: a core which contains at least ytterbium, aluminum, and phosphorus; and a cladding which encircles the core, wherein an aluminum oxide equivalent concentration of the aluminum in the core is 0.2 mol% or more, a diphosphorus pentaoxide equivalent concentration of the phosphorus is higher than the aluminum oxide equivalent concentration, and the core either does not contain germanium or contains less than 1.1 mol% of germanium in a germanium dioxide equivalent concentration.
摘要翻译：掺镱光纤包括：至少含有镱，铝和磷的芯; 和包围所述核的包层，所述核中的铝的氧化铝当量浓度为0.2摩尔％以上，所述磷的五氧化二磷的当量浓度比所述氧化铝的当量浓度高，所述核不是含有锗或含有二氧化锗当量浓度小于1.1摩尔％的锗。

6. 发明公开

EP2088650A1 Yb-DOPED OPTICAL FIBER PHOTODARKENING SUPPRESSION PROCESSING METHOD, PHOTODARKENING-SUPPRESSED Yb-DOPED OPTICAL FIBER, AND FIBER LASER 有权
标题翻译：掺镱光纤光停电的轻质停电检测技术抑制方法表达掺镱光纤激光器和光纤激光器
公开(公告)号：EP2088650A1
公开(公告)日：2009-08-12
申请号：EP08740562.7
申请日：2008-04-17
申请人： Fujikura, Ltd.
发明人： ICHII, Kentaro , HOSOYA, Hideyuki
IPC分类号： H01S3/06
CPC分类号： H01S3/06716 , H01S3/0014 , H01S3/094007 , H01S3/0941 , H01S3/1618 , H01S3/1693
摘要： A processing method for suppressing photodarkening in an Yb-doped optical fiber, comprising: a first step of preparing the Yb-doped optical fiber by doping a core with Yb, and irradiating at least one of a gamma ray, a X-ray, or an electron beam onto the Yb-doped optical fiber with an energy greater than a light to be transmitted through the optical fiber when a laser is being oscillated; a second step of measuring a loss spectrum of an infrared region of the optical fiber after the first step, and selecting an optical fiber with the loss in a specific wavelength falling within a predetermined range; and a third step of treating the optical fiber selected in the second step in an atmosphere containing hydrogen to obtain an Yb-doped optical fiber with suppressed photodarkening.
摘要翻译：用于抑制光暗的处理方法掺Yb光纤，包括：由掺杂有Yb的芯制备掺Yb光纤，并照射γ射线中的至少一种，X射线的第一步骤，或电子束到掺Yb光纤与能量比光更大为是经由光纤当激光被振荡反mitted的; 在第一步骤之后测量所述光纤的红外区域的损耗谱中的第二步骤，和光纤的选择具有在特定波长落入在预定范围内的损失; 和处理所述光纤在大气中含有氢气，以获得所述第二步骤中选择的第三步骤的掺Yb光纤抑制光暗化。

7. 发明授权

EP2151900B1 OPTICAL COMMUNICATIONS MODULE, PROCESS FOR MANUFACTURING THE SAME, AND OPTICAL TRANSMITTER AND RECEIVER APPARATUS 有权
标题翻译：光通信模块，其制造工艺和光学发射器和接收器装置
公开(公告)号：EP2151900B1
公开(公告)日：2016-03-23
申请号：EP08711810.5
申请日：2008-02-22
申请人： Fujikura Ltd.
发明人： TERADA, Yoshihiro , OHASHI, Masakazu , AZEGAMI, Koji , ICHII, Kentaro
IPC分类号： H01S5/022 , G02B6/42 , H01L31/0232 , H01L33/00
CPC分类号： G02B6/43 , G02B6/4202 , H01L2224/45144 , H01L2224/48091 , H01L2224/48247 , H01S5/02284 , Y10T29/49826 , H01L2924/00014 , H01L2924/00

8. 发明公开

EP2388871A1 MULTICLAD OPTICAL FIBER, OPTICAL FIBER MODULE, FIBER LASER, AND FIBER AMPLIFIER 有权转让
标题翻译： MEHRFACH PLATTIERTE OPTISCHE FASER，FASERMODUL，FASERLASER UNDFASERVERSTÄRKER
公开(公告)号：EP2388871A1
公开(公告)日：2011-11-23
申请号：EP10789176.4
申请日：2010-06-04
申请人： Fujikura, Ltd. , National University Corporation Hokkaido University
发明人： TANIGAWA, Shoji , ICHII, Kentaro , TAKENAGA, Katsuhiro , SAITOH, Kunimasa
IPC分类号： H01S3/06 , G02B6/036
摘要： The multi-cladding optical fiber of the present invention is provided with a core with an average refractive index n1 that guides a signal light and a cladding composed of an inner cladding with an average refractive index n2 that is formed on the periphery of the core, an intermediate cladding with an average refractive index n3 that is formed on the periphery of the inner cladding, and an outer cladding with an average refractive index n4 that is formed on the periphery of the intermediate cladding to confine an excitation light to the inner side of the intermediate cladding, characterized by the refractive indices n1 to n4 satisfying the relationship of n1 > n2 > n3 > n4; there being two or more axisymmetric modes in the core at a wavelength of the signal light; the two or more axisymmetric modes being composed of a fundamental mode and at least a high-order mode that is an axisymmetric mode of a higher order than the fundamental mode; and when bent at a predetermined bending diameter, the high-order mode in the core disperses within the inner cladding due to coupling with an inner cladding mode, so that only the fundamental mode substantially propagates through the core.
摘要翻译：本发明的多包层光纤具有引导信号光的平均折射率n1的芯和由形成在芯的外周上的平均折射率n2的内包层构成的包层，形成在内包层的周边上的平均折射率n3的中间包层和形成在中间包层的周边上的平均折射率n4的外包层，以将激发光限制在内包层的内侧中间包层，其特征在于满足n1> n2> n3> n4的关系的折射率n1至n4; 在信号光的波长处的芯中存在两个或更多个轴对称模式; 两个以上的轴对称模式由基本模式和至少高阶模式构成，高阶模式是比基模高阶的轴对称模式; 并且当以预定的弯曲直径弯曲时，由于与内包层模式的耦合，芯中的高阶模式分散在内包层内，使得仅基本模式基本上通过芯传播。

9. 发明公开

EP2182597A1 RARE-EARTH DOPED CORE MULTI-CLAD FIBER, FIBER AMPLIFIER, AND FIBER LASER 审中-公开
标题翻译： MEHRFACHUMHÜLLTEFASER MIT SELTENERDDOTIERTEM KERN，FASERVERSTÄRKERUND FASERLASER
公开(公告)号：EP2182597A1
公开(公告)日：2010-05-05
申请号：EP08828385.8
申请日：2008-08-28
申请人： Fujikura, Ltd.
发明人： TANIGAWA, Shoji , ICHII, Kentaro
IPC分类号： H01S3/06 , G02B6/02 , G02B6/036 , H01S3/10
CPC分类号： G02B6/02033 , G02B6/03605 , G02B6/0365 , G02B6/03661 , H01S3/06716 , H01S3/06729 , H01S3/1608 , H01S3/1611
摘要： A rare-earth doped core multi-clad fiber that includes: a core that includes a rare-earth element; and a plurality of cladding layers that surround the core, in which: an outermost cladding of the plurality of cladding layers is made of polymer cladding; the plurality of cladding layers have a polygonal inner cladding; and a shape of a boundary between a second cladding from the outside and the outermost cladding does not have two-fold rotational symmetry. As a result, it is possible to provide a rare-earth doped core multi-clad fiber for an optical amplifier and fiber laser that has low skew and is inexpensive.
摘要翻译：一种稀土掺杂的芯多包层光纤，包括：包含稀土元素的芯; 以及围绕所述芯的多个包覆层，其中：所述多个包层中的最外包层由聚合物包层制成; 所述多个包覆层具有多边形内包层; 并且来自外部的第二包层与最外层之间的边界的形状不具有双重旋转对称性。结果，可以提供一种用于光学放大器的稀土掺杂的芯多包层光纤和具有低偏斜度并且便宜的光纤激光器。

10. 发明授权

EP2388871B1 MULTICLAD OPTICAL FIBER, OPTICAL FIBER MODULE, FIBER LASER, AND FIBER AMPLIFIER 有权转让
公开(公告)号：EP2388871B1
公开(公告)日：2020-11-18
申请号：EP10789176.4
申请日：2010-06-04
申请人： Fujikura Ltd. , National University Corporation Hokkaido University
发明人： TANIGAWA, Shoji , ICHII, Kentaro , TAKENAGA, Katsuhiro , SAITOH, Kunimasa
IPC分类号： H01S3/06 , G02B6/036 , G02B6/02 , G02B6/14

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