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11. 发明专利

JP2008015338A Optical fiber cord and method of removing its coating 有权
标题翻译：光纤光栅及其涂层方法
公开(公告)号：JP2008015338A
公开(公告)日：2008-01-24
申请号：JP2006188105
申请日：2006-07-07
申请人： Hitachi Cable Ltd , Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , 日立電線株式会社
发明人： TACHIKURA MASAO , KUROSAWA YOSHINORI , HIRAMATSU KATSUMI , TOMITA SHIGERU , KURASHIMA TOSHIO
IPC分类号： G02B6/44 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber cord and a method of removing its coating, wherein coating removal properties are improved in the optical fiber cord of a tight type structure without impairing tensile strength and flexural rigidity. SOLUTION: Onto the periphery of the core fiber 11 of an optical fiber, for which a core fiber coating 13 is applied to the exterior of the optical fiber 12, a polyethylene fiber of ultrahigh molecular weight is vertically attached or spirally wound, forming a nearly concentric circular polyethylene fiber layer 15 of the ultrahigh molecular weight. From the outside of this formation, an ultraviolet ray setting resin 16 is impregnated and hardened to form a fiber reinforcing layer 14. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：为了提供一种光纤线缆及其涂层去除方法，其中在紧密型结构的光纤帘线中的涂层去除性能得到改善，而不损害拉伸强度和抗弯刚度。解决方案：将芯纤维涂层13施加到光纤12的外部的光纤的芯纤维11的周围，将超高分子量的聚乙烯纤维垂直地附着或螺旋卷绕，形成超高分子量的近似同心的圆形聚乙烯纤维层15。从该层的外侧，紫外线固化树脂16被浸渍并硬化以形成纤维增强层14.版权所有（C）2008，JPO＆INPIT

12. 发明专利

JP2007213086A Optical fiber, method of splicing optical fibers, and optical connector 有权
标题翻译：光纤，分离光纤的方法和光连接器
公开(公告)号：JP2007213086A
公开(公告)日：2007-08-23
申请号：JP2007086819
申请日：2007-03-29
申请人： Hitachi Cable Ltd , Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , 日立電線株式会社
发明人： KUROSAWA YOSHINORI , YO HEI , OSONO KAZUMASA , TACHIKURA MASAO , NAKAI HISANORI , KURASHIMA TOSHIO , ARAKI EIJI , HIRAMATSU KATSUMI
IPC分类号： G02B6/00 , G02B6/02 , G02B6/032 , G02B6/36
摘要： PROBLEM TO BE SOLVED: To provide: a photonic crystal optical fiber capable of being spliced with the conventional single mode optical fiber at low loss; a method of splicing the photonic crystal optical fiber and the single mode optical fiber; and an optical connector. SOLUTION: The core and the clad of the optical fiber are formed of quartz having the same refractive index, the core is formed by periodically arranging a plurality of holes 13 from the center along the fiber axis direction in a hexagonal lattice form, and a crystal defect is formed at the center, wherein the holes 13 are arranged from the center in a hexagonal lattice form of four periods, the diameter of the clad is 125 μm, the diameter of the pores 13 is 3 μm, the refractive index of the clad is 1.458, and the holes 13 in the vicinity of a spliced part 12 are filled with fluorine-containing ultraviolet-setting resin 14 whose the refractive index after curing is 1.42. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供：能够以低损耗与常规单模光纤拼接的光子晶体光纤; 一种拼接光子晶体光纤和单模光纤的方法; 和光连接器。解决方案：光纤的芯和包层由具有相同折射率的石英形成，芯通过以六边形格子形式沿着纤维轴方向从中心周期性地布置多个孔13而形成，并且在中心处形成晶体缺陷，其中孔13以四个周期的六边形格子形式从中心布置，包层的直径为125μm，孔13的直径为3μm，折射率的包层为1.458，接合部12附近的孔13填充有固化后的折射率为1.42的含氟紫外线固化树脂14。版权所有（C）2007，JPO＆INPIT

13. 发明专利

JP2005024848A Splice part of optical fiber and optical fiber splicer 有权
标题翻译：光纤和光纤分离器的部分
公开(公告)号：JP2005024848A
公开(公告)日：2005-01-27
申请号：JP2003189726
申请日：2003-07-01
申请人： Hitachi Cable Ltd , Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , 日立電線株式会社
发明人： KUROSAWA YOSHINORI , OSONO KAZUMASA , TACHIKURA MASAO , KURASHIMA TOSHIO , ARAKI EIJI , HIRAMATSU KATSUMI
IPC分类号： G02B6/24 , G02B6/26
摘要： PROBLEM TO BE SOLVED: To provide a splice part of an optical fiber of which the splice loss is small and the change in temperature characteristic of the splice loss is small, and to provide an optical fiber splicer. SOLUTION: In the splice part 1 of an optical fiber in which an optical fiber 61 with a plurality of pores in the clad 63 around the core 62 is spliced to the other optical fiber 71, the optical fiber 61 is butt-spliced to the other optical fiber via a refractive index matching agent r having a refractive index lower than that of the core 62 at the lowest temperature for practical use. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供接合损耗小并且接头损耗的温度特性变化小的光纤的接合部分，并且提供光纤接合器。解决方案：在光纤的接合部分1中，其中在芯62周围的包层63中具有多个孔的光纤61与另一个光纤71接合，光纤61对接通过折射率低于芯62的折射率匹配剂r在最低温度下实际使用到另一光纤。版权所有（C）2005，JPO＆NCIPI

14. 发明专利

JP2013050744A Alignment structure for optical fiber and optical connector using the same, and alignment method for optical fiber 有权
标题翻译：用于光纤和光纤连接器的对准结构以及光纤对准方法
公开(公告)号：JP2013050744A
公开(公告)日：2013-03-14
申请号：JP2012272479
申请日：2012-12-13
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KOYAMA MAKOTO , NAKAJIMA KAZUHIDE , KURASHIMA TOSHIO
IPC分类号： G02B6/24 , G02B6/36
摘要： PROBLEM TO BE SOLVED: To provide an alignment structure for an optical fiber and an optical connector using the alignment structure that, without peeling off a coating in an optical fiber with the coating attached, enable execution of accurate alignment of the optical fiber, and to provide an alignment method for an optical fiber.SOLUTION: A coating 1b in optical fibers 1 inserted into an alignment part 17 is cut and torn off by each guide blade 17b, and a tip of each guide blade 17b is made to come into contact with a bare optical fiber 1a in the optical fibers 1. Thereby, since the bare optical fiber 1a is set to be positioned in the radial direction thereof, the optical fibers 1 with the coating attached can be accurately aligned with each other and, without peeling off the coating 1b in the optical fibers 1, can be inserted, as they are, into a connector body to be assembled. Then, each guide blade 17b provided movably in the radial direction of the optical fibers 1 is energized inward in the radial direction of the optical fibers 1.
摘要翻译：要解决的问题：为了提供一种用于光纤的对准结构和使用对准结构的光连接器，其在不剥离附着有涂层的光纤中的涂层的情况下，能够执行光纤的精确对准并且提供一种用于光纤的对准方法。解决方案：插入到对准部17中的光纤1中的涂层1b被每个引导刀片17b切割并撕开，并且使每个引导刀片17b的末端与裸光纤1a接触因此，由于裸光纤1a被设定为沿其径向定位，所以具有附着的涂层的光纤1可以彼此精确对准，并且不会在光学元件中剥离涂层1b 纤维1可以原样插入要组装的连接器主体中。然后，沿光纤1的径向可移动地设置的每个引导叶片17b在光纤1的径向方向被向内激励。版权所有：（C）2013，JPO＆INPIT

15. 发明专利

JP2012132990A Optical fiber ribbon splitting tool 有权
标题翻译：光纤分离工具
公开(公告)号：JP2012132990A
公开(公告)日：2012-07-12
申请号：JP2010282999
申请日：2010-12-20
申请人： Fujikura Ltd , Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , 株式会社フジクラ
发明人： KOHARA KENJI , MOMOTSU HITOHIRO , YAMADA YUSUKE , IZUMIDA HISASHI , KURASHIMA TOSHIO
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber ribbon splitting tool which does not bend optical fibers during splitting work.SOLUTION: An optical fiber ribbon splitting tool 1 splits an intermittently fixed optical fiber ribbon having intermittent inter-optical fiber connection parts 3, to single optical fibers and comprises a linear rail 5 and a splitting tool body 6 slidable on the rail. The splitting tool body 6 includes a body base 8 and a lid part 9, and an optical fiber ribbon is inserted between the body base 8 and the lid part 9. The lid part 9 is provided with a coil spring (splitting action member) 21. When the splitting tool body is slid to locate the coil spring in a non-connection region d having no inter-optical fiber connection parts 3 in one position in a lengthwise direction of the optical fiber ribbon, a wire material 21a of the coil spring enters between optical fibers. When the splitting tool body is slid furthermore, respective connection parts 3 are torn by the wire material 21a to split the optical fiber ribbon to single optical fibers. Since a bending force causing optical loss on optical fibers does not act during splitting work, the optical fiber ribbon can be split to single optical fibers in a hot-line state.
摘要翻译：要解决的问题：提供一种在分离工作期间不弯曲光纤的光纤带分割工具。解决方案：光纤带分割工具1将具有间断的光纤间连接部分3的间歇固定的光纤带分割成单个光纤，并且包括可在轨道上滑动的直线导轨5和分割工具主体6。分割工具主体6包括主体基部8和盖部9，并且在本体基部8和盖部9之间插入光纤带。盖部9设置有螺旋弹簧（分离动作部件）21 当分割工具主体滑动以将螺旋弹簧定位在光纤带长度方向上一个位置上没有光纤间连接部分3的非连接区域d时，螺旋弹簧的线材21a 进入光纤之间。当分割工具体进一步滑动时，各个连接部分3被线材21a撕裂，以将光纤带分裂成单根光纤。由于在分光作业时光纤上产生光损耗的弯曲力不起作用，所以光纤带可以在热线状态下分裂为单根光纤。版权所有（C）2012，JPO＆INPIT

16. 发明专利

JP2012052999A Optical pulse testing device and method thereof 有权
标题翻译：光学脉冲测试装置及其方法
公开(公告)号：JP2012052999A
公开(公告)日：2012-03-15
申请号：JP2010197614
申请日：2010-09-03
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MATSUI TAKASHI , IZUMIDA HISASHI , KURASHIMA TOSHIO
IPC分类号： G01M11/00 , G01L1/24
摘要： PROBLEM TO BE SOLVED: To measure external force applied to an optical fiber or an optical fiber cable from the side and changes in ambient temperature over the whole of a longitudinal direction.SOLUTION: A light wave from a light source 11 is modulated into an optical pulse having optional pulse width and transmission period by a modulator 13, and the optical pulse is made incident to one end of an optical fiber 2 to be measured via a directional coupler 14. At the time, back-scattered light generated in the optical fiber 2 to be measured and returned to the one end side is passed through a polarizer 21 to take out scattered light components by GAWBS (Guided acoustic-wave Brillouin scattering), and the scattered light components are converted into electric signals by a light receiving device 22. Subsequently, the obtained electric signals and electric signals of a prescribed frequency from an oscillator 23 are mixed in a mixer 24. Further, a square average processing is performed on time waveforms of the electric signals after the mixing by an averaging processing part 25 to acquire scattered light intensity at an optional position in the longitudinal direction of the optical fiber 2 to be measured. The external force is detected from a frequency characteristic in relation to scattered light intensity.
摘要翻译：要解决的问题：测量从侧面施加到光纤或光纤电缆的外力，并且在整个纵向方向上改变环境温度。解决方案：来自光源11的光波被调制器13调制成具有可选的脉冲宽度和传输周期的光脉冲，并且光脉冲被入射到待测量的光纤2的一端，经过定向耦合器14.此时，待测量的光纤2中产生的返回到一端的反向散射光通过偏振器21，以通过GAWBS（引导声波布里渊散射）引出散射光分量），并且通过光接收装置22将散射光分量转换成电信号。随后，将获得的电信号和来自振荡器23的规定频率的电信号混合在混合器24中。此外，平方平均处理为通过平均处理部25对混合后的电信号的时间波形进行拍摄，以获得在光线的纵向方向上的可选位置处的散射光强度 cal纤维2待测量。从相对于散射光强度的频率特性检测外力。版权所有（C）2012，JPO＆INPIT

17. 发明专利

JP2012042389A Method of measuring distribution of bent loss in longitudinal direction of optical fiber and optical fiber line, method of testing optical line, and method of manufacturing optical fiber 有权
标题翻译：测量光纤和光纤线的纵向方向上的弯曲损耗分布的方法，测量光线的方法和制造光纤的方法
公开(公告)号：JP2012042389A
公开(公告)日：2012-03-01
申请号：JP2010185320
申请日：2010-08-20
申请人： Fujikura Ltd , Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , 株式会社フジクラ
发明人： TANIGAWA SHOJI , ISHIDA ITARU , MATSUO SHOICHIRO , KURASHIMA TOSHIO , NAKAJIMA KAZUHIDE , SHIMIZU TOMOYA , MATSUI TAKASHI , GOTO YUKIHIRO
IPC分类号： G01M11/00
CPC分类号： G01M11/39 , G01M11/3145
摘要： PROBLEM TO BE SOLVED: To measure the distribution of bent loss in the longitudinal direction of an optical fiber by a bidirectional OTDR measuring method.SOLUTION: In the method for measuring the distribution of bent loss in the longitudinal direction of the optical fiber, an arithmetic mean value I(x) is calculated from two back-scattered light intensity values, on a position x, of two back-scattered light beams obtained by bidirectional OTDR measurement of the optical fiber, and a bent loss value is obtained from a mode field diameter 2W(x) and a relative refractive index difference Δ(x) on the position x, which are calculated from the arithmetic mean value I(x). When obtaining the bent loss value, it is preferable that the target optical fiber is regarded as an optical fiber having step type refractive index distribution equivalent to the refractive index distribution of the target optical fiber and the bent loss value on the position x is calculated from a relational expression of a standardized frequency V of the optical fiber having the step type refractive index distribution, a core radius (a) and a node field diameter 2W.
摘要翻译：要解决的问题：通过双向OTDR测量方法测量光纤的纵向弯曲损耗的分布。解决方案：在用于测量光纤纵向弯曲损耗分布的方法中，算术平均值I（x）由两个反向散射光强度值计算，位置x为2 从位置x上的模场直径2W（x）和相对折射率差Δ（x）获得的通过光纤的双向OTDR测量获得的背散射光束和弯曲损耗值，其从算术平均值I（x）。当获得弯曲损耗值时，优选将目标光纤视为具有与目标光纤的折射率分布相当的阶梯型折射率分布的光纤，并且从位置x计算弯曲损耗值具有阶梯型折射率分布的光纤的标准化频率V，芯半径（a）和节点场直径2W的关系表达式。版权所有（C）2012，JPO＆INPIT

18. 发明专利

JP2012037782A Hole-assisted optical fiber 有权
标题翻译：孔辅助光纤
公开(公告)号：JP2012037782A
公开(公告)日：2012-02-23
申请号：JP2010179058
申请日：2010-08-09
申请人： Furukawa Electric Co Ltd:The , Nippon Telegr & Teleph Corp , 古河電気工業株式会社 , 日本電信電話株式会社
发明人： KUMANO NAOMI , SHIMOTAKAHARA IWAO , SUGIZAKI RYUICHI , YAGI TAKESHI , SHIMIZU TOMOYA , MATSUI TAKASHI , GOTO YUKIHIRO , KURASHIMA TOSHIO , NAKAJIMA KAZUHIDE
IPC分类号： G02B6/00
CPC分类号： G02B6/032 , G02B6/02333 , G02B6/02366 , G02B6/03627
摘要： PROBLEM TO BE SOLVED: To provide a hole-assisted optical fiber which has good bending loss characteristics, is suitable for use as optical fibers for optical communication, and has a large design margin for achieving desired properties.SOLUTION: A hole-assisted optical fiber is provided with a core and a cladding having an inner cladding layer and an outer cladding layer and having a plurality of holes formed around the core, in which the diameter of the core is 3 μm to 9.8 μm, the relative refractive index difference of the core relative to the outer cladding layer is 0.11% to 0.45%, the outer diameter of the inner cladding layer is 53 μm or less, the relative refractive index difference of the inner cladding layer relative to the outer cladding layer is a negative value greater than or equal to -0.30%, the diameter of the holes is 2.4 μm to 4.0 μm, the hole occupancy rate is 17% to 48%, the bending loss at a wavelength of 1625 nm when bent at a 5 mm radius is 1 dB/turn or less, and the cutoff wavelength is 1550 nm or less.
摘要翻译：要解决的问题：为了提供具有良好弯曲损耗特性的孔辅助光纤，适合用作光通信用光纤，并且具有用于实现期望特性的大的设计余量。解决方案：空穴辅助光纤设置有具有内包层和外包层的芯和包层，并且具有形成在芯周围的多个孔，其中芯的直径为3μm 芯的相对折射率差相对于外包层的相对折射率差为0.11〜0.45％，内包层的外径为53μm以下，内包层的相对折射率差为外包层的负值大于或等于-0.30％，孔的直径为2.4μm〜4.0μm，孔占有率为17〜48％，波长1625nm处的弯曲损耗当半径为5mm弯曲为1dB /匝以下时，截止波长为1550nm以下。版权所有（C）2012，JPO＆INPIT

19. 发明专利

JP2011039238A Alignment structure of optical fiber, optical connector using the same, and alignment method of optical fiber 有权
标题翻译：光纤的对准结构，使用该光纤的光连接器和光纤的对准方法
公开(公告)号：JP2011039238A
公开(公告)日：2011-02-24
申请号：JP2009185852
申请日：2009-08-10
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KOYAMA MAKOTO , NAKAJIMA KAZUHIDE , KURASHIMA TOSHIO
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide: an alignment structure of an optical fiber, which can accurately align the optical fiber without peeling off a clad optical fiber; an optical connector using the same; and an alignment method of an optical fiber.
SOLUTION: The clad 1b of the optical fiber 1, inserted into an alignment section 12, is cut by each guide blade 12b, and a bare fiber 1a is positioned in a diameter direction by contacting an edge section of each guide plate 12b to bare fiber 1a of the optical fiber 1. Thus, the optical fibers 1 are accurately aligned with each other with the clad as it is, and the optical fiber 1 can be inserted into a connector body 11 and assembled, as it is, without peeling off the clad 1b, and the optical fiber 1 is very easily treated on assembly.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供：光纤的对准结构，其可以在不剥离包层光纤的情况下精确地对准光纤; 使用该连接器的光连接器; 以及光纤的对准方法。解决方案：插入到对准部分12中的光纤1的包层1b被每个引导片12b切割，并且裸光纤1a通过接触每个引导板12b的边缘部分而沿直径方向定位光纤1的裸光纤1a。因此，光纤1以包层原样准确地对齐，并且光纤1可以插入连接器主体11中并且被组装成没有剥离包层1b，并且光纤1在组装时非常容易地处理。版权所有（C）2011，JPO＆INPIT

20. 发明专利

JP2011033974A Method and device for connecting optical fiber 审中-公开
标题翻译：用于连接光纤的方法和装置
公开(公告)号：JP2011033974A
公开(公告)日：2011-02-17
申请号：JP2009182338
申请日：2009-08-05
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KOYAMA MAKOTO , NAKAJIMA KAZUHIDE , KURASHIMA TOSHIO , SHIMIZU MASATOSHI
IPC分类号： G02B6/255
摘要： PROBLEM TO BE SOLVED: To obtain inexpensive and reliable permanent connection for an optical fiber. SOLUTION: For optical fibers 10A and 10B have a connecting end surface (cleavage-end surface) 13, formed by cleaving the tip of a bare optical fiber strand section 12 formed by removing the coating of one end to which a coated optical fiber core section 11 is to be connected. (i) The cleavage end surfaces 13 are aligned and butted on each other so that the core centers face each other using an optical fiber alignment mechanism, (ii) a pressure force P is applied between the optical fibers 10A and 10B so that the cleavage end surface 13 are stuck fully to each other; (iii) an adhesive 20 is injected into the circumference of the stuck cleavage end surfaces 13 in this state and are fixed; and by having the stuck state maintained by the adhesive force of the adhesive 20, permanent connection of the optical fiber is carried out. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了获得廉价可靠的光纤永久连接。解决方案：对于光纤10A和10B具有连接端面（切割端面）13，其通过切除裸光纤线股部分12的尖端而形成，该裸光纤线股部分12通过去除涂覆光学部分的一端的涂层而形成光纤芯部分11将被连接。（i）裂开端面13彼此对准并且彼此对接，使得芯中心使用光纤对准机构彼此面对，（ii）在光纤10A和10B之间施加压力P，使得切割端面13彼此完全粘合; （iii）在该状态下将粘合剂20注入到被卡定的解除端面13的圆周中并固定; 并且通过由粘合剂20的粘合力保持卡住状态，进行光纤的永久连接。版权所有（C）2011，JPO＆INPIT

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