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1. 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

2. 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

3. 发明专利

JP2013182156A Optical fiber ribbon and optical fiber cable 审中-公开
标题翻译：光纤光纤和光纤电缆
公开(公告)号：JP2013182156A
公开(公告)日：2013-09-12
申请号：JP2012046440
申请日：2012-03-02
申请人： Fujikura Ltd , 株式会社フジクラ , Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： TAKE YUKIKO , MATSUZAWA TAKASHI , OSATO TAKESHI , OKADA NAOKI , SHIMIZU TOMOYA , SEKIGUCHI TOSHIHIKO , KURASHIMA TOSHIO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber ribbon which can be stored in a slot groove by making a lamination thickness of the optical fiber ribbon thinner than a lamination thickness for which a lamination number is multiplied with the maximum thickness of the optical fiber ribbon including a resin protrusion.SOLUTION: In an optical fiber ribbon 1 for which optical fiber wires 2 (2A-2D) are aligned in one line and joined by resin, by forming resin protrusions 3A and 3B on every other tape surface 1a and forming a resin protrusion 3C at a position corresponding to a part between the resin protrusions 3A and 3B formed on the tape surface 1a on the other tape surface 1b, the resin protrusions 3A, 3B and 3C are arranged alternately in a tape width direction. When the optical fiber ribbons 1 are laminated in a tape thickness direction matching both end positions in the tape width direction, the resin protrusions 3A and 3B provided on one tape surface are fitted to recesses 4A and 4B formed on the tape surface on the opposite side of the resin protrusions 3A and 3B.
摘要翻译：要解决的问题：通过使光纤带的层叠厚度比层叠次数乘以光纤带的最大厚度的层叠厚度来提供可以存储在槽槽中的光纤带包括树脂突起。解决方案：在光纤线2（2A-2D）以一条线排列并通过树脂连接的光纤带1中，通过在每隔一个带表面1a上形成树脂突起3A和3B并形成树脂突起3C在与另一个带表面1b上形成在带表面1a上的树脂突起3A和3B之间的部分相对应的位置处，树脂突起3A，3B和3C沿带宽度方向交替布置。当光纤带1沿着带宽度方向上的两个端部位置的带厚度方向层叠时，设置在一个带表面上的树脂突起3A和3B装配到形成在相对侧的带表面上的凹部4A和4B 的树脂突起3A和3B。

4. 发明专利

JP2012103341A Device and method for manufacturing optical fiber ribbon, optical fiber ribbon, and optical fiber cable 有权
标题翻译：用于制造光纤玻璃纤维，光纤玻璃纤维和光纤电缆的装置和方法
公开(公告)号：JP2012103341A
公开(公告)日：2012-05-31
申请号：JP2010249820
申请日：2010-11-08
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： TAKE YUKIKO , MATSUZAWA TAKASHI , OSATO TAKESHI , OKADA NAOKI , SHIMIZU TOMOYA , SEKIGUCHI TOSHIHIKO , KURASHIMA TOSHIO
IPC分类号： G02B6/44 , B29C65/52
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber ribbon which can be easily separated into individual fibers at the time of fiber lead-in and which is not inadvertently separated into individual fibers at the time of being stored in an optical fiber cable.SOLUTION: In an optical fiber ribbon 1, a plurality of optical fiber strands 2A-2D are arranged in line at a predetermined pitch P and a resin 3 which is made of an ultraviolet curing resin and bonds the optical fiber strands 2 with each other is applied and supplied between each of the optical fiber strands 2. When the resin 3 is applied and supplied between each of gaps S of the in-line optical fiber strands 2, the gaps S are vacuumed and the resin 3 is formed by being let wrap around from a coating surface side 1a to an opposite surface side 1b.
摘要翻译：要解决的问题：提供一种光纤带，其可以在光纤引入时容易地分离成单独的光纤，并且在存储在光纤电缆中时不会被无意地分离成单独的光纤。解决方案：在光纤带1中，多个光纤线2A-2D以预定间距P成直线排列，而树脂3由紫外线固化树脂制成，并将光纤2与彼此在每个光纤线束2之间施加和供应。当树脂3被施加并供应在直列光纤线束2的每个间隙S之间时，间隙S被抽真空，树脂3由被从表面侧1a包围到相对的表面侧1b。版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2011185992A Method and apparatus for manufacturing of optical fiber ribbon 有权
标题翻译：用于制造光纤玻璃的方法和装置
公开(公告)号：JP2011185992A
公开(公告)日：2011-09-22
申请号：JP2010048088
申请日：2010-03-04
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： SATO YUKIKO , MITSUHASHI KEIKO , OKADA NAOKI , SHIMIZU TOMOYA , SEKIGUCHI TOSHIHIKO , KURASHIMA TOSHIO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber ribbon, facilitating single core separation.
SOLUTION: An apparatus for manufacturing an optical fiber ribbon includes: a concentrator 13 for concentrating a plurality of optical fibers 3 to be arranged closely in a line; a bonding resin coating device 17 for applying curable bonding resin 5 for connecting adjacent optical fibers 3 to each other on the arrangement plane side of at least one of adjacent optical fibers 3; a resin curing irradiation device 27 for curing the curable bonding resin 5; a bonding resin outline measuring device 29 for measuring the bonding width and the bonding thickness of the curable bonding resin 5; a ribbon resin for allowing the curable bonding resin 5 to bond the adjacent optical fibers to each other in a plane vertical to the longitudinal direction of the optical fiber 3 based on the bonding width and the bonding thickness of the curable bonding resin 5; and a control device 25 for controlling the ribbon resin for bonding the adjacent optical fiber not to be bonded and to have a projection height to jump outward over a tangent touching the outer peripheries of two adjacent optical fibers 3.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供光纤带，便于单芯分离。解决方案：一种用于制造光纤带的设备包括：集中器13，用于聚集多个光纤3，以将其布置成一条线; 用于在相邻的光纤3中的至少一个的布置平面侧上彼此连接相邻光纤3的可固化粘合树脂5的粘合树脂涂覆装置17; 用于固化可固化粘合树脂5的树脂固化辐射装置27; 用于测量可固化接合树脂5的接合宽度和接合厚度的接合树脂轮廓测量装置29; 基于粘合宽度和可固化粘合树脂5的粘合厚度，使可固化粘合树脂5在垂直于光纤3的纵向的平面中彼此粘合可固化粘合树脂5的带状树脂; 以及控制装置25，用于控制带状树脂，用于接合不被接合的相邻光纤，并且具有突出高度以在接触两个相邻光纤3的外周的切线上向外跳跃。版权所有：（C ）2011，JPO＆INPIT

6. 发明专利

JP2012063340A Method of measuring hole diameter, hole position, hole surface roughness, or bending loss of an optical fiber with a hole, method of manufacturing optical fiber with hole, and method of testing optical fiber line with hole 有权
标题翻译：测量孔直径，孔位置，孔表面粗糙度或孔弯曲光纤损失的方法，用孔制造光纤的方法和测量具有孔的光纤线的方法
公开(公告)号：JP2012063340A
公开(公告)日：2012-03-29
申请号：JP2011021886
申请日：2011-02-03
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： ISHIDA ITARU , TANIGAWA SHOJI , MATSUO SHOICHIRO , KURASHIMA TOSHIO , NAKAJIMA KAZUHIDE , SHIMIZU TOMOYA , MATSUI TAKASHI , GOTO YUKIHIRO
IPC分类号： G01B11/12 , C03B37/025 , G01B11/00 , G01B11/30 , G01M11/02 , G02B6/00 , G02B6/032
CPC分类号： G01B11/08 , G01B11/24 , G01B11/30 , G01B11/303 , G01B11/306 , G01N21/954 , G01N21/958
摘要： PROBLEM TO BE SOLVED: To easily know a hole diameter, a hole position, hole surface roughness, and bending loss, etc., of an optical fiber with a hole without cutting the optical fiber with the hole when measuring the hole diameter of the optical fiber with the hole.SOLUTION: Two-directional OTDR measurement is carried out in which reference optical fibers 2 are connected to both ends of an optical fiber 3 with the hole respectively and measurement light beams are made incident from both ends of the connected optical fiber 2 to measure back-scattered light beams. An arithmetic mean value lref at a part of the reference optical fibers 2 and an arithmetic mean value lhf(x) at a position (x) of the optical fiber 3 with the hole are calculated from two obtained back-scattered light waveforms, and a difference (Ihf-Iref) ΔI between the arithmetic mean value lhf and arithmetic mean value lref is found. Based upon the correlation between the found difference ΔI and the hole diameter of the optical fiber 3 with the hole, the hole diameter, the hole position, the surface roughness of the hole, and the bending loss at the position (x) are found.
摘要翻译：要解决的问题：为了容易地知道当测量孔直径时，具有孔的光纤的孔径，孔位置，孔表面粗糙度和弯曲损耗等，而不用孔切割光纤的光纤与孔。
解决方案：进行双向OTDR测量，其中参考光纤2分别连接到具有孔的光纤3的两端，并且测量光束从连接的光纤2的两端入射到测量背散射光束。根据两个获得的反向散射光波形，计算参考光纤2的一部分的算术平均值lref和具有孔的光纤3的位置（x）处的算术平均值lhf（x），并且求出算术平均值lhf与算术平均值lref之差（Ihf-Iref）ΔI。基于发现的差ΔI与具有孔的光纤3的孔径，孔直径，孔位置，孔的表面粗糙度以及位置（x）处的弯曲损耗之间的相关性。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2011186166A Split tool for optical fiber ribbon 审中-公开
标题翻译：光纤玻璃分离工具
公开(公告)号：JP2011186166A
公开(公告)日：2011-09-22
申请号：JP2010050874
申请日：2010-03-08
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： SATO YUKIKO , MATSUZAWA TAKASHI , OSATO KEN , OKADA NAOKI , SHIMIZU TOMOYA , SEKIGUCHI TOSHIHIKO , KURASHIMA TOSHIO
IPC分类号： G02B6/00 , H02G1/14
摘要： PROBLEM TO BE SOLVED: To provide a split tool for an optical fiber ribbon, reducing transmission loss of an optical fiber caused at the split work and having favorable workability. SOLUTION: The optical fiber ribbon 3 as an object is formed by connecting a plurality of optical fibers 1 arranged in a lateral line to each other by curable bonding resin 2 to be integrated like a tape. A substantially V-groove gap 7 formed between the opposite outer peripheral surfaces of two adjacent optical fibers 1 is filled with connecting bonding resin 2 connecting two adjacent optical fibers to each other. The optical fiber ribbon has a projection height h projecting outward over a common tangent L (L') touching the outer peripheral surfaces of the two optical fibers 1. Pressure is applied from the tape thickness direction to a connecting bonding resin part 2 at a desired portion of the optical fiber ribbon 3 by two plate-like members 5, 6 disposed on both sides in the tape thickness direction, thereby separating the connecting bonding resin 2 from the optical fiber outer peripheral surface to be split into a single core fiber. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供一种用于光纤带的分割工具，减少了在分裂工作时引起的光纤的传输损耗并且具有良好的可操作性。＆lt; P＆gt;解决方案：作为目的的光纤带3通过将通过可固化粘合树脂2彼此排列成横向线的多个光纤1连接成一体而形成为一体地形成带状。形成在两个相邻的光纤1的相对的外周表面之间的大致V形槽隙7被连接两个相邻光纤的连接接合树脂2填充。光纤带具有在接触两根光纤1的外周面的公切线L（L'）上向外突出的突起高度h。从带厚度方向将压力以期望的方式从连接接合树脂部件2施加通过设置在带厚度方向两侧的两个板状构件5,6，由此将连接接合树脂2与光纤外周面分离，从而将其分割为单芯纤维。版权所有（C）2011，JPO＆INPIT

8. 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

9. 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

10. 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

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