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1. 发明专利

JP2012036051A Hollow-structured optical fiber, and connector for pressure impression/reduction 有权
标题翻译：中空结构光纤和压力/压缩连接器
公开(公告)号：JP2012036051A
公开(公告)日：2012-02-23
申请号：JP2010179056
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： SHIMOTAKAHARA IWAO , INABA HARUMI , SUGIZAKI RYUICHI , MORIHIRA HIDEYA , SHIMIZU TOMOYA , MATSUI TAKASHI , GOTO SACHIHIRO , KURASHIMA TOSHIO , NAKAJIMA KAZUHIDE
IPC分类号： C03B37/027 , G02B6/00 , G02B6/032
CPC分类号： C03B37/0122 , C03B37/0124 , C03B2203/14 , C03B2203/42
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a hollow-structured optical fiber, which can manufacture the hollow-structured optical fiber having a high long-term reliability; and to provide a connector for pressure impression/reduction used for the same.SOLUTION: The method for manufacturing a hollow-structured optical fiber having a core part and a clad part formed on the outer periphery of the core part and having hollows includes a preform formation step of inserting a hollow-forming glass rod which has a region to become the core part and in which hollows to elongate in the longitudinal direction are formed, inside a clad-forming glass tube to form a part of the clad part, to thereby form a perform; and a draw step of heating the preform while the pressure in a gap formed between the hollow-forming glass rod and the clad-forming glass tube of the preform formed in the above is being reduced and a pressure in the hollows is being impressed, and drawing the hollow-structured optical fiber while the gap is being extinguished.
摘要翻译：解决的问题：提供一种可制造具有高长期可靠性的中空结构光纤的中空结构光纤的制造方法; 并提供用于其的压力压缩/压缩连接器。解决方案：具有芯部和形成在芯部的外周上并具有中空部的包层部的中空结构光纤的制造方法包括：预成型体成形工序，其插入中空成型玻璃棒，成为芯部的区域，其中形成在纵向方向上延伸的中空部分，形成包层形成玻璃管内部以形成包层部分的一部分，从而形成表面; 以及在上述形成的中空成形玻璃棒和形成前述预成型玻璃管的包层形成用玻璃管之间形成的间隙内的压力减小并且在中空部内施加压力的同时，对预成形体进行加热的拉拔工序，在间隙消失的同时绘制中空结构的光纤。版权所有（C）2012，JPO＆INPIT

2. 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

3. 发明专利

JP2012036052A Methods for manufacturing optical fiber preform, and hollow-structured optical fiber, and connector for pressure-impression/reduction 有权
标题翻译：用于制造光纤预制件的方法和中空结构的光纤，以及用于压力/压缩/缩小的连接器
公开(公告)号：JP2012036052A
公开(公告)日：2012-02-23
申请号：JP2010179057
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： SHIMOTAKAHARA IWAO , INABA HARUMI , SUGIZAKI RYUICHI , MORIHIRA HIDEYA , SHIMIZU TOMOYA , MATSUI TAKASHI , GOTO SACHIHIRO , KURASHIMA TOSHIO , NAKAJIMA KAZUHIDE
IPC分类号： C03B37/012 , C03B37/018
CPC分类号： C03B37/0122
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical fiber preform for a hollow-structured optical fiber, which can easily up-sizing the optical fiber preform, and can reduce the manufacture cost; and to provide a method for manufacturing a hollow-structured optical fiber, and a connector for pressure-impression/reduction.SOLUTION: The method for manufacturing a hollow-structured optical fiber having a core part and a clad part formed on the outer periphery of the core part and having hollows includes a hollow-forming glass tube preparation step of preparing a hollow-forming glass tube in which hollows to elongate in the longitudinal direction are formed in the circumference of an opening hole, a clad outer circumference formation step of forming a clad outer circumference to become an outer circumference region of a clad part in the circumference of the hollow-forming glass tube, an insertion step of inserting a core glass rod having a region to become a core part inside the hollow-forming glass tube, and an integration step of heating the hollow-forming glass tube in which the core glass rod has been inserted to integrate the core glass rod and the hollow-forming glass tube.
摘要翻译：要解决的问题：提供一种用于制造中空结构光纤的光纤预制件的方法，其可以容易地调整光纤预制棒的尺寸，并且可以降低制造成本; 并且提供一种制造中空结构光纤的方法和用于压力/压缩的连接器。解决方案：用于制造具有芯部和形成在芯部的外周上并具有中空部的包层部的中空结构光纤的方法包括中空成形玻璃管制备步骤，其制备中空成形玻璃管，其中在纵向方向上延伸的中空部分形成在开孔的圆周中;包层外圆周形成步骤，形成包层外周，成为中空部分的圆周中的包层部分的外周区域; 形成玻璃管的插入步骤，将具有成为芯部的区域的芯玻璃棒插入中空成形玻璃管内部的插入步骤，以及加热其中插入有芯玻璃棒的中空成型玻璃管的整合步骤将芯玻璃棒和中空成型玻璃管整合。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2015022086A マルチコア光ファイバ有权
标题翻译：多芯光纤
公开(公告)号：JP2015022086A
公开(公告)日：2015-02-02
申请号：JP2013149048
申请日：2013-07-18
申请人：日本電信電話株式会社 , Nippon Telegr & Teleph Corp
发明人： SAKAMOTO YASUSHI , MORI TAKAYOSHI , YAMAMOTO TAKASHI , WADA MASAKI , NAKAJIMA KAZUHIDE , YAMAMOTO FUMIHIKO
IPC分类号： G02B6/04 , G02B6/02
摘要：【課題】本発明は、2個以上のコアが配置された光ファイバにおいて、群遅延差の低減と空間利用効率の両立を図ることを目的とする。【解決手段】本発明は、2個以上のコアが配置された光ファイバであって、光ファイバ中を伝搬するモード間の群遅延差が?450ps/km以下、かつコア間のクロストークが−25dB以上となる様にコア間隔距離Dとモードフィールド半径Wの比D/Wを制御する。【選択図】図1
摘要翻译：要解决的问题：兼容地实现了具有两个或更多个核心的光纤中的组延迟差和空间利用效率的降低。解决方案：本发明是一种配置有两个或更多个核的光纤，其中，控制芯间隔距离D与模场半径W的D / W，使得在光纤中传播的模场之间的组延迟差成为等于或不高于±450ps / km，并且在核变得等于或不小于25db。

5. 发明专利

JP2014035457A Connection mechanism for optical fiber and its method 审中-公开
标题翻译：光纤连接机制及其方法
公开(公告)号：JP2014035457A
公开(公告)日：2014-02-24
申请号：JP2012176703
申请日：2012-08-09
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SAITO KOTARO , NAKAJIMA KAZUHIDE
IPC分类号： G02B6/24
摘要： PROBLEM TO BE SOLVED: To provide a less-loss, convenient, and inexpensive butting connection technique for an optical fiber, which can also be applied in a hole structure optical fiber, and uses a refraction index conformity agent of a non-liquid.SOLUTION: A refraction index conformity agent 3 of a non-liquid is arranged in a place that is in contact with the connection end of an optical fiber 1 fixed to a core adjustment member 11, and the connection end of an optical fiber 2 gripped by a gripping member 12 is inserted into the core adjustment member 11. The optical fiber 2 is bent by moving the grip member 12. While the connection end of the optical fiber 2 is pressed against the connection end of the optical fiber 1 via the refraction index conformity agent 3, the optical fibers 1 and 2 are fixed. At this time, the hardness H of the refraction index conformity agent 3 is controlled as a function of a bend width L required for satisfactory connection loss. Also, the bend fiber length Lby which required pressing force is obtained is controlled as a function of a bend width L. Alternatively, a bend fiber length Lby which a bend loss of 0.1 dB or less is obtained is controlled as a function of the bend width L.
摘要翻译：要解决的问题：为了提供一种也可应用在孔结构光纤中的光纤的损耗小，便利且便宜的对接连接技术，并且使用非液体的折射率一致性试剂。：将非液体的折射率合格试剂3配置在与固定在芯调节部件11上的光纤1的连接端部接触的位置，将光纤2的连接端夹持构件12插入到芯调节构件11中。光纤2通过移动握持构件12而弯曲。当光纤2的连接端经由折射率一致性被按压在光纤1的连接端代理3，光纤1和2是固定的。此时，折射率一致性试剂3的硬度H被控制为满足连接损耗所需的弯曲宽度L的函数。此外，获得需要按压力的弯曲光纤长度Lby被控制为弯曲宽度L的函数。或者，获得弯曲损耗为0.1dB或更小的弯曲光纤长度Lby作为弯曲的函数宽度L.

6. 发明专利

JP2013167759A Optical fiber connection mechanism and method thereof 有权
标题翻译：光纤连接机构及其方法
公开(公告)号：JP2013167759A
公开(公告)日：2013-08-29
申请号：JP2012030916
申请日：2012-02-15
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SAITO KOTARO , NAKAJIMA KAZUHIDE
IPC分类号： G02B6/36
摘要： PROBLEM TO BE SOLVED: To provide a low-loss, simple, and inexpensive butt joint technique for an optical fiber using a solid-state reactive index matching agent, which is applicable to even optical fibers having an air-hole structure.SOLUTION: An optical fiber 32 is inserted to an aligning member 13 fixed to one end of a base member 42 in a state where a holding member 41 is disposed in such a position that an interval between the holding member 41 and the aligning member 13 is equal to a prescribed bending fiber length, and the optical fiber 32 is held by the holding member 41 at the moment when an end surface at the front end of the optical fiber butts against a prescribed solid-state refractive index matching agent 31, and the optical fiber 32 is bent by moving the holding member 41 toward the aligning member 13 till a spacer 43 having the same length as a prescribed bend width is brought into contact with the aligning member 13, whereby a pressing force of 0.1 N or more is applied between the end surface of the optical fiber 32 and the refractive index matching agent 31 to achieve satisfactory connection characteristics.
摘要翻译：要解决的问题：为了提供使用固体反应性指数匹配剂的光纤的低损耗，简单且廉价的对接技术，其适用于具有气孔结构的均匀光纤。解决方案：将光纤32插入到固定在基座部件42的一端的对准部件13，其中保持部件41配置在保持部件41与对准部件13的间隔等于在光纤前端的端面与规定的固态折射率匹配剂31相对的时刻，光纤32由保持部件41保持，光纤32 通过将保持构件41朝向对准构件13移动直到具有与规定弯曲宽度相同长度的间隔件43与对准构件13接触而弯曲，由此施加0.1N以上的按压力在光纤32的端面与折射率匹配剂31之间，以实现令人满意的连接特性。

7. 发明专利

JP2013125064A Cutoff wavelength-controlled optical fiber and optical fiber cable 有权
标题翻译：切割波长控制光纤和光纤电缆
公开(公告)号：JP2013125064A
公开(公告)日：2013-06-24
申请号：JP2011272269
申请日：2011-12-13
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： GOTO YUKIHIRO , NAKAJIMA KAZUHIDE
IPC分类号： G02B6/02
摘要： PROBLEM TO BE SOLVED: To achieve both reduction of a bend loss and increase of a mode field diameter (MFD) while suppressing an increase in cutoff wavelength.SOLUTION: A cutoff wavelength-controlled optical fiber comprises a clad 1 having a uniform refractive index, and a core 2 having a higher refractive index than that of the clad 1 and disposed at a center of the clad 1. When the refractive index of the core 2 is nand the refractive index of the clad 1 is n, relative refractive index difference Δ between the clad 1 and the core 2 is defined by the formula 10. Standardized frequency V of the core 2 at a wavelength of 1550 nm is set in a range of 2.00 to 3.35, and outer diameter D of the clad 1 is set in a range of 50 to 119 μm.
摘要翻译：要解决的问题：同时抑制截止波长的增加同时实现弯曲损耗的减小和模场直径（MFD）的增加。解决方案：截止波长控制光纤包括具有均匀折射率的包层1和具有比包层1的折射率更高的折射率的芯2并且设置在包层1的中心处。当折射率芯2的折射率为n 1 ，包层1的折射率为n 2 ，相对折射率差Δ 包层1和芯2由公式10定义。芯体2在1550nm波长处的标准化频率V设定在2.00至3.35的范围内，并且包层1的外径D被设定在一定范围内为50〜119μm。版权所有（C）2013，JPO＆INPIT

8. 发明专利

JP2012032575A Optical fiber 审中-公开
标题翻译：光纤
公开(公告)号：JP2012032575A
公开(公告)日：2012-02-16
申请号：JP2010171545
申请日：2010-07-30
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MATSUI TAKASHI , NAKAJIMA KAZUHIDE , KURASHIMA TOSHIO
IPC分类号： G02B6/00 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber that reduces a bend loss in a radius of steep bend and, at the same time, realizes a bend loss that makes conventional optical fiber identification possible in a radius of relatively easy bend.SOLUTION: An optical fiber comprises a core region 11, a cladding region 12 surrounding the core region and a plurality of holes 13 disposed in one layer in the cladding region at a prescribed distance from the axis. The insides of the holes are vacuum or filled with air, gas, liquid or solid lower than the cladding region in refractive index. The bend loss at a bend radius of 5 mm is not more than 1.0 dB/turn at a wavelength of 1625 nm; and, in an approximation of the relationship between the bend loss αand the bend radius R by the next exponential function, a coefficient A in the exponential function is not more than 10 and a coefficient B in the exponential function is not less than -0.46.
摘要翻译：要解决的问题：提供一种降低陡峭弯曲半径的弯曲损耗的光纤，同时实现弯曲损耗，使得在相对容易弯曲的半径中可以进行常规的光纤识别。解决方案：光纤包括芯区域11，围绕芯区域的包层区域12和在距离轴线规定距离处设置在包层区域中的一层中的多个孔13。孔的内部是真空的或充满空气，气体，液体或固体的低于折射率的包层区域。在弯曲半径为5mm的弯曲损耗在1625nm的波长处不超过1.0dB /匝; 并且，通过下一个指数函数近似弯曲损耗α b 与弯曲半径R之间的关系，指数函数中的系数A不大于10，指数函数中的系数B不小于-0.46。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2011039236A Assembly device and assembly method of optical connector 有权
标题翻译：光连接器的组装装置和组装方法
公开(公告)号：JP2011039236A
公开(公告)日：2011-02-24
申请号：JP2009185850
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 , NAKAMIZO KYOICHI
IPC分类号： G02B6/36
摘要： PROBLEM TO BE SOLVED: To provide an assembly device and an assembly method of an optical connector, capable of easily and efficiently performing assembly work of an optical connector. SOLUTION: An optical fiber 1 held by a fiber holder 21 is moved to an axis direction, and is inserted to a fiber end processing section 23. After an end side of the optical fiber 1 is opened and cut in the fiber end processing section 23, the optical fiber 1 is moved to another position of the axis direction. After a corner section of an end face of the optical fiber 1 is cut into a taper shape, the optical fiber 1 is pulled out from the end processing section 23, and the optical fiber 1 is moved from a first guide groove 22a to a second guide groove 22b, and inserted to the optical connector 10 by sliding it along the second guide groove 22b. Thus, cutting of the optical fiber 1, grinding processing of the end face, and insertion step to the optical connector 10 are performed by one assembly device 20, and it is not necessary to directly treat a bare fiber 1a from which a coating 1b is removed. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够容易且有效地执行光连接器的组装工作的光连接器的组装装置和组装方法。解决方案：由光纤保持器21保持的光纤1沿轴线方向移动，并插入到光纤端部处理部23中。在光纤1的端侧在光纤端部断开处理部23，将光纤1移动到轴方向的另一位置。在将光纤1的端面的角部切割成锥形后，从端部处理部23拉出光纤1，将光纤1从第一引导槽22a移动到第二引导槽22a 引导槽22b，并且通过沿着第二引导槽22b滑动而插入到光学连接器10中。因此，通过一个组装装置20进行光纤1的切割，端面的研磨处理以及插入步骤到光连接器10，并且不需要直接处理涂覆1b的裸光纤1a 除去。版权所有（C）2011，JPO＆INPIT

10. 发明专利

JP2010102138A Hole providing type single mode optical fiber and manufacturing method of the same 有权
标题翻译：孔型提供单模光纤及其制造方法
公开(公告)号：JP2010102138A
公开(公告)日：2010-05-06
申请号：JP2008273731
申请日：2008-10-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： NAKAJIMA KAZUHIDE , SHIMIZU TOMOYA , FUKAI CHISATO , HOSHIJIMA TETSUYA , TOMITA SHIGERU , SHIMIZU MASATOSHI
IPC分类号： G02B6/00 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide a hole providing type single mode optical fiber used for construction of a single mode optical communication line using a communication band of 1,260 nm or more of wavelength having 1,260 nm or less of 22 m-effective cutoff wavelength and a bending loss property at 1,625 nm of wavelength and 0.1 dB/roll or less at 5 mm of bending radius, and a simple designing method of the hole providing type single mode optical fiber. SOLUTION: This hole providing type single mode optical fiber has a clad part having a uniform refractive index, a core part which has a higher refractive index than the clad part and is arranged in the center of the clad part, and at least six holes arranged at equal intervals concentrically with the core part inside the clad part. The occupancy rate of the holes in the clad part and the relative index difference of the core part in relation to the clad part are controlled. The desired bending loss property and the 22 m-effective cutoff wavelength property are thus obtained. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于构造单模光通信线路的孔提供型单模光纤，该单模光通信线路使用1,260nm以上的波长的通信带，其具有1,260nm以下的22μm有效截止波长和波长为1625nm的弯曲损耗特性以及弯曲半径为5mm时为0.1dB /小于等于或者较小的孔型提供型单模光纤的简单设计方法。解决方案：该孔提供型单模光纤具有折射率均匀的包层部分，具有比包层部分更高的折射率的芯部并且布置在包层部分的中心，并且至少六个孔以等间隔与包层部分内部的芯部同心地布置。控制包层部的孔的占有率和芯部相对于包层部的相对折射率差。因此获得所需的弯曲损耗特性和22μm有效截止波长特性。版权所有（C）2010，JPO＆INPIT

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