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    • 1. 发明授权
    • Coated optical fiber and coated optical fiber with connector
    • 涂层光纤和带有连接器的涂层光纤
    • US07542644B2
    • 2009-06-02
    • US10523994
    • 2004-02-19
    • Kazunori TanakaKaoru OkunoTomoyuki HattoriKiyoaki MoriuchiHiroshi Hayami
    • Kazunori TanakaKaoru OkunoTomoyuki HattoriKiyoaki MoriuchiHiroshi Hayami
    • G02B6/44
    • C03C25/1065G02B6/02395G02B6/3838
    • An object of the present invention is to provide a buffered optical fiber, which excels in environmental characteristics and mechanical characteristics and has high flame retardancy and excels in optical transmission characteristics, and to provide a buffered optical fiber, which is terminated with a connector and uses this buffered optical fiber. The buffered optical fiber of the invention is provided with a second coating layer on an outer peripheral surface of an optical fiber produced by providing a first coating layer on an outer peripheral surface of a glass fiber. A second resin composition constituting the second coating layer comprises 100 to 250 weight parts of metal hydroxide and 10 to 100 weight parts of a nitrogen-based flame retardant material per 100 weight parts of the base polymer. Further, the second resin composition does not contain halogenated materials.
    • 本发明的目的是提供一种缓冲光纤,其环境特性和机械特性优异,并且具有高阻燃性和优异的光传输特性,并且提供缓冲光纤,其被连接器端接,并且使用 这种缓冲光纤。 本发明的缓冲光纤在玻璃纤维的外周面上设置第一被覆层而制造的光纤的外周面上设置有第二被覆层。 构成第二涂层的第二树脂组合物每100重量份的基础聚合物包含100至250重量份的金属氢氧化物和10至100重量份的基于氮的阻燃材料。 此外,第二树脂组合物不含有卤化物质。
    • 2. 发明授权
    • Optical fiber tape core
    • 光纤胶带芯
    • US07116872B2
    • 2006-10-03
    • US10515767
    • 2003-05-28
    • Kaoru OkunoTomoyuki Hattori
    • Kaoru OkunoTomoyuki Hattori
    • G02B6/44G02B6/036
    • G02B6/4403G02B6/02004G02B6/02266G02B6/02271G02B6/02395G02B6/0281G02B6/03611G02B6/3636G02B6/4495
    • In an optical fiber ribbon 1 according to the present invention, four optical fibers 10, 20, 30 and 40 are arranged in parallel to each other in a plane, a part of the periphery of these four optical fibers is covered with a ribbon matrix 51, but no rest thereof is covered with the ribbon matrix. First areas covered with the ribbon matrix 51 and second areas uncovered with the ribbon matrix alternate with each other along the longitudinal direction thereof. Alternatively, the optical fiber ribbon 1 is covered with the ribbon matrix over its entire length. In the glass section of each optical fibers, the mode field diameter defined by the definition of Petermann-I at a wavelength of 1.55 μm is 8 μm or less, and the cable cutoff wavelength is 1.26 μm or less.
    • 在根据本发明的光纤带1中,四个光纤10,20,30和40在平面中彼此平行地布置,这四个光纤的周边的一部分被带状矩阵51覆盖 ,但是没有其余部分被带状矩阵覆盖。 用带状矩阵51覆盖的第一区域和未被覆盖的带状矩阵的第二区域沿其纵向相互交替。 或者,光纤带1在其整个长度上被带状矩阵覆盖。 在每个光纤的玻璃部分中,由波特1.55μm的Petermann-I定义的模场直径为8μm或更小,电缆截止波长为1.26μm或更小。
    • 3. 发明授权
    • Optical fiber, method of making the same, and optical transmission system including the same
    • 光纤,其制造方法以及包括该光纤的光传输系统
    • US06567597B2
    • 2003-05-20
    • US09899020
    • 2001-07-06
    • Eisuke SasaokaMasashi OnishiKatsuya NagayamaKaoru OkunoKazuya Kuwahara
    • Eisuke SasaokaMasashi OnishiKatsuya NagayamaKaoru OkunoKazuya Kuwahara
    • G02B602
    • G02B6/03644C03B37/0253C03B37/027C03B37/02745C03B37/032C03B2203/19C03B2203/36C03B2205/06G02B6/02247G02B6/02285G02B6/278
    • The present invention provides an optical fiber and the like comprising a structure making it possible to realize optical communications with a higher speed and a larger capacity as compared with conventional optical transmission systems. The optical fiber according to the present invention is an optical fiber in which at least one first portion having a positive chromatic dispersion at a predetermined wavelength within a wavelength band in use and at least one second portion having a negative chromatic dispersion at the predetermined wavelength are arranged adjacent each other along the longitudinal direction thereof. In particular, the optical fiber comprises a polarization coupling structure for inducing coupling between polarization modes of propagating light. This polarization coupling structure randomly causes coupling between polarization modes of the propagating light, whereby polarization mode dispersion decreases at the predetermined wavelength. As a consequence, transmission characteristics are effectively restrained from deteriorating due to polarization mode dispersion. Specifically, the polarization coupling structure is a twist applied to the optical fiber.
    • 本发明提供一种光纤等,其包括与常规光传输系统相比可以实现具有更高速度和更大容量的光通信的结构。 根据本发明的光纤是一种光纤,其中在使用中的波长带内的预定波长具有正色散的至少一个第一部分和在预定波长处具有负色散的至少一个第二部分是 沿着其纵向彼此相邻布置。 特别地,光纤包括用于在传播光的偏振模式之间引起耦合的偏振耦合结构。 该偏振耦合结构随机引起传播光的偏振模式之间的耦合,从而偏振模色散在预定波长处降低。 结果,由于偏振模式色散,传输特性被有效地抑制为劣化。 具体地,偏振耦合结构是施加到光纤上的扭转。
    • 9. 发明授权
    • Optical fiber coating method and coating apparatus
    • 光纤涂布方法和涂布装置
    • US06576058B2
    • 2003-06-10
    • US09447886
    • 1999-11-24
    • Kazumasa OishiKaoru OkunoIchiro TsuchiyaMasahiro Takagi
    • Kazumasa OishiKaoru OkunoIchiro TsuchiyaMasahiro Takagi
    • B05C312
    • C03C25/18C03C25/1065C03C25/12
    • In an optical fiber coating method comprising the steps of; applying an injecting first coating resin to the outer periphery of the optical fiber while inserting the optical fiber through a first die hole provided in a first coating die; and applying an injected second coating resin onto the first coating resin while inserting the optical fiber through a second die hole provided in a second coating die. Wherein a disk-shaped upper end face of the second coating die and a basically disk-shaped lower end face of the first coating die having a protrusion formed around the first die hole and projecting in the passing direction of the optical fiber are opposed to each other so as to arrange the first and second die holes concentrically, and the second coating resin is injected into the second die hole by way of a gap formed between the lower end face of the first coating die and the upper end face of the second coating die, so as to reduce an annular lower-pressure region formed around the optical fiber in a flow of the second coating resin within the gap.
    • 在一种光纤涂覆方法中,包括以下步骤: 在通过设置在第一涂层模具中的第一模孔插入光纤的同时,向光纤的外周施加注入的第一涂覆树脂; 以及在通过设置在第二涂层模具中的第二模孔插入光纤的同时将注射的第二涂覆树脂施加到第一涂覆树脂上。 其特征在于,所述第二涂布模具的盘状上端面和所述第一涂布模具的基本圆盘状的下端面具有形成在所述第一模具孔周围的突出部并沿着所述光纤的通过方向突出的突起, 另一个,以便将第一和第二模具孔同心地布置,并且第二涂覆树脂通过形成在第一涂覆模具的下端面和第二涂层的上端面之间的间隙注入到第二模孔中 模具,以便在第二涂覆树脂在间隙内的流动中减少在光纤周围形成的环形低压区域。