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    • 3. 发明专利
    • Methods for manufacturing optical fiber preform, and hollow-structured optical fiber, and connector for pressure-impression/reduction
    • 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
    • JP2012036052A
    • 2012-02-23
    • JP2010179057
    • 2010-08-09
    • Furukawa Electric Co Ltd:TheNippon Telegr & Teleph Corp 古河電気工業株式会社日本電信電話株式会社
    • SHIMOTAKAHARA IWAOINABA HARUMISUGIZAKI RYUICHIMORIHIRA HIDEYASHIMIZU TOMOYAMATSUI TAKASHIGOTO SACHIHIROKURASHIMA TOSHIONAKAJIMA KAZUHIDE
    • C03B37/012C03B37/018
    • C03B37/0122
    • 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.
    • 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
    • 5. 发明专利
    • 光ファイバ接続工具及び光ファイバ接続方法
    • 光纤连接工具和光纤连接方法
    • JP2014219517A
    • 2014-11-20
    • JP2013097890
    • 2013-05-07
    • 株式会社フジクラFujikura Ltd日本電信電話株式会社Nippon Telegr & Teleph Corp
    • TAKAHASHI SHIGEONAKAMA AKIHIROYAMAGUCHI TAKASHITAKIZAWA KAZUHIROKIHARA MITSURUIZUMIDA HISASHISHIMIZU TOMOYA
    • G02B6/24
    • G02B6/24
    • 【課題】光ファイバ接続器の内部において光ファイバが突き合わせ接続される前の段階において、光ファイバの撓みや座屈を防止できるようにする。【解決手段】光ファイバ1を保持する光ファイバホルダ110と、光ファイバ接続器A及び光ファイバホルダ110を設置する設置台120と、を備えた光ファイバ接続工具100を提供する。光ファイバホルダ110は、設置台120に設置された状態において光ファイバ接続器Aに対して近接離間する方向に移動可能とされる。設置台120は、光ファイバホルダ110と光ファイバ接続器Aの挿入口25との間に設けられる。設置台120は、光ファイバ1を挿通させる挿通孔156,166を有するファイバガイド部132,133を備える。ファイバガイド部132,133は、光ファイバホルダ110の移動方向に移動可能である。【選択図】図4
    • 要解决的问题:提供一种光纤连接工具,其能够防止在光纤面对并连接在光纤连接装置之前的阶段中的光纤的偏转和屈曲。解决方案:光纤连接工具100包括: 用于保持光纤1的光纤夹具110和用于安装光纤连接器A和光纤夹具110的安装基座120.光纤夹具110可沿与光纤连接器A相邻的方向移动 设置在安装基座120中的状态。安装基座120设置在光纤夹具110与光纤连接器A的插入开口25之间,并且包括具有用于插入光学器件的插入孔156和166的光纤引导部件132和133 纤维引导部132,133能够沿着光纤夹具110的移动方向移动。
    • 6. 发明专利
    • Optical fiber base material manufacturing method and optical fiber
    • 光纤基材料制造方法和光纤
    • JP2014031303A
    • 2014-02-20
    • JP2012174281
    • 2012-08-06
    • Sumitomo Electric Ind Ltd住友電気工業株式会社Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • NAGASHIMA TAKUSHITARU TOSHIKISHIMIZU TOMOYAGOTO YUKIHIRO
    • C03B37/012C03B37/018C03C13/04G02B6/032G02B6/036
    • C03B37/01208C03B37/0122C03B2203/42
    • PROBLEM TO BE SOLVED: To provide a method capable of manufacturing an optical fiber base material having plural holes extending in a longitudinal direction at low costs and with high accuracy.SOLUTION: In an optical fiber base material manufacturing method according to the present invention, a jacket is formed around a core material to manufacture an optical fiber base material. The method includes: a starting material manufacturing step of manufacturing a starting material 10 by adding a third region 13 with larger viscosity than that of the core material outside of the core material comprising a first region 11 and a second region 12 surrounding the first region 11; an accumulation step of accumulating glass fine particles around the starting material 10; and a sintering step of forming the jacket by sintering the accumulating glass fine particles and making them transparent. Ge is added to the first region 11. Cl or F is added to the second region 12, and the second region 12 has plural holes 14 extending in a longitudinal direction. At temperatures of 1300-1700°C during the sintering step, a viscosity of the third region 13 is larger than that of the second region 12.
    • 要解决的问题:提供一种能够以低成本和高精度制造具有沿纵向延伸的多个孔的光纤基材的方法。解决方案:在根据本发明的光纤基材制造方法中, 护套形成在芯材周围以制造光纤基材。 该方法包括:起始材料制造步骤,通过添加具有比包含第一区域11的芯材料外的芯材的粘度大的第三区域13和包围第一区域11的第二区域12来制造原料10 ; 在原料10的周围积聚玻璃微粒的积累步骤; 以及烧结步骤,通过烧结积聚的玻璃微粒并使其透明地形成夹套。 Ge添加到第一区域11.将Cl或F加入到第二区域12中,并且第二区域12具有在纵向方向上延伸的多个孔14。 在烧结步骤中,在1300-1700℃的温度下,第三区域13的粘度大于第二区域12的粘度。
    • 7. 发明专利
    • Optical fiber cable
    • 光纤电缆
    • JP2013105133A
    • 2013-05-30
    • JP2011250507
    • 2011-11-16
    • Fujikura Ltd株式会社フジクラNippon Telegr & Teleph Corp 日本電信電話株式会社
    • SHIOBARA SATORUOKADA NAOKIITO NAOTOSHIMIZU TOMOYASASAKI TADASHIDAIDO JUNJITAKAMIZAWA KAZUTOSHINUMATA TETSUHIRO
    • G02B6/44
    • G02B6/44
    • PROBLEM TO BE SOLVED: To provide an optical fiber cable that can be simply connected to existing wiring and enables wiring of bending in a small diameter.SOLUTION: An optical fiber cable includes: a coated optical fiber 2; a pair of tension members 10, made of a resin material, drawn in parallel with each other in a drawing direction of the coated optical fiber 2 with the coated optical fiber 2 held therebetween; a pair of wiring auxiliary members 16 disposed on a line connecting the coated optical fiber 2 and the pair of tension members 10 in a cross section taken perpendicularly to the drawing direction and, made of a plastically deformable metallic material, drawn in parallel with each other in the drawing direction with the pair of tension members 10 held therebetween; and a jacket 12 having an optical element part 4 for coating the coated optical fiber 2 and the pair of tension members 10, a pair of wiring auxiliary parts 6 for coating the pair of wiring auxiliary members 16 respectively, and connection parts 8 for connecting continuously or intermittently the optical element part 4 and the pair of wiring auxiliary parts 6.
    • 要解决的问题:提供可以简单地连接到现有布线并且能够实现小直径弯曲布线的光纤电缆。 解决方案:光缆包括:涂覆光纤2; 一对由树脂材料制成的张力构件10,其被涂覆的光纤2保持在涂覆光纤2的拉伸方向上彼此平行地拉伸; 一对布线辅助构件16,其布置在垂直于拉伸方向截取的横截面上连接被覆光纤2和一对拉伸构件10的线上,并且由彼此平行地拉伸的可塑性变形的金属材料制成 在拉伸方向上,一对张力构件10保持在其间; 以及具有用于涂布被覆光纤2的光学元件部4和一对张紧部件10的护套12,分别用于涂覆该对配线辅助部件16的一对配线辅助部6以及连续地连接的连接部8 或者间歇性地将光学元件部件4和一对布线辅助部件6。版权所有:(C)2013,JPO&INPIT
    • 8. 发明专利
    • Single mode optical fiber
    • 单模光纤
    • JP2011203552A
    • 2011-10-13
    • JP2010071562
    • 2010-03-26
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • NAKAJIMA KAZUHIDEFUKAI CHISATOSHIMIZU TOMOYAMATSUI TAKASHI
    • G02B6/02
    • PROBLEM TO BE SOLVED: To achieve a single mode optical fiber where the mode field diameter is large and the bending loss is low.SOLUTION: This single mode optical fiber has: a clad part 10 where the refractive index is uniform, a first core part 21 that is arranged at the center of the clad part 10 and where the specific refractive index difference to the clad part 10 is Δ and the radius is a1; a second core part 22 that is arranged on the outer periphery of the first core part and where the refractive index is equivalent to that of the clad part and the radius including the first core part is a2; and a third core part 23 that is arranged on the outer periphery of the second core part and where the specific refractive index difference to the clad part is Δ1 and the radius including the first core part and second core part is a. The radius a is 9.7-18.6 μm, the specific refractive index difference Δ is 0.15-0.40%, the ratio Ra1 of the radius a1 to the radius a is 0.38-0.44, the ratio Ra2 of the radius a2 to the radius a is 0.60-0.74, and ratio RΔ of the specific refractive index difference Δ1 to specific refractive index difference Δ is in each range of -0.60 to -1.60.
    • 要解决的问题:实现模场直径大且弯曲损耗低的单模光纤。解决方案:该单模光纤具有:折射率均匀的包层部10,第一芯部 21,其布置在包层部分10的中心,并且其中与包层部分10的比折射率差为Δ,半径为a1; 布置在第一芯部的外周上并且其折射率等于包层部的折射率的第二芯部22和包括第一芯部的半径的第二芯部22为a2; 以及第三芯部23,其布置在第二芯部的外周上,并且其中与包层部的比折射率差为Δ1,并且包括第一芯部和第二芯部的半径为a。 半径a为9.7〜18.6μm,比折射率差Δ为0.15-0.40%,半径a1与半径a的比Ra1为0.38-0.44,半径a2与半径a的比Ra2为0.60 -0.74,比折射率差Δ1与比折射率差Δ的比值RΔ在-0.60〜-1.60的范围内。
    • 10. 发明专利
    • Coated optical fiber switching unit and method thereof
    • 涂层光纤切换单元及其方法
    • JP2014077919A
    • 2014-05-01
    • JP2012226064
    • 2012-10-11
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • SHIMIZU TOMOYAKIHARA MITSURUIZUMIDA HISASHIKURASHIMA TOSHIO
    • G02B6/40
    • PROBLEM TO BE SOLVED: To easily change over the coated optical fiber of an MT connector at low costs.SOLUTION: Two guide holes 32 of a multicore connector ferrule 12 having, same as a normal multicore connector ferrule 11, a four-core multicore coated optical fiber 22 and the two guide holes 32 are formed in a cross-sectional shape so that a guide pin can be parallel-moved in a lateral line arrangement direction of the multicore coated optical fiber 22 by only one core, for the normal multicore connector ferrule 11 having a four-core multicore coated optical fiber 21 and two guide holes 31. This structure enables either one of the multicore connector ferrules 11 and 12 each with the guide pins being inserted into and connected to the guide holes 31, 32 to move in the lateral line arrangement direction of the multicore coated optical fiber by only one core as it is, thereby allowing batch changeover of the multicore coated optical fibers to be connected.
    • 要解决的问题:以低成本容易地改变MT连接器的涂覆光纤。解决方案:多芯连接器套圈12的两个引导孔32具有与正常多芯连接器套圈11相同的四芯多芯涂层 光纤22和两个引导孔32形成为横截面形状,使得引导销可以通过仅一个芯在多芯涂覆光纤22的侧向排列方向上平行移动,用于正常的多芯连接器 具有四芯多芯涂层光纤21和两个引导孔31的套圈11.这种结构使得多芯连接器套圈11和12中的每一个都具有引导销插入并连接到引导孔31,32以移动 在多核涂覆光纤的侧线布置方向上仅通过一个核心,从而允许要连接的多芯涂层光纤的批量转换。