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26 条记录 (耗时 0.017 秒)

    Method of forming a fiber preform to minimize shifts of the zero-dispersion wavelength
    1.
    发明授权
    Method of forming a fiber preform to minimize shifts of the zero-dispersion wavelength 失效
    形成纤维预制件以使零色散波长的偏移最小化的方法

    公开(公告)号：US5683486A

    公开(公告)日：1997-11-04

    申请号：US358529

    申请日：1994-12-19

    申请人： Hiroshi Oyamada ,  Go Ogino ,  Hideo Hirasawa

    发明人： Hiroshi Oyamada ,  Go Ogino ,  Hideo Hirasawa

    IPC分类号： C03B37/012 ,  C03B37/014 ,  C03B37/027

    CPC分类号： C03B37/014 ,  C03B2203/22 ,  C03B2203/36 ,  C03B2207/70 ,  G02B6/02247

    摘要： An improvement is proposed, in a method for the preparation of a step-index silica glass preform as a precursor of optical fibers by completing the cladding layer of the secondary preform by the outer deposition on and around a primary preform consisting of the center core and side core, to conduct the outer deposition for the cladding layer in such a way that the inequality .vertline.d.lambda..sub.0 /dk.vertline..ltoreq.500 nm is satisfied, in which k is the ratio of the diameter of the primary preform to the diameter of the secondary preform and .lambda..sub.0 is the zero-dispersion wavelength in nm of an optical fiber obtained by drawing the secondary preform, d.lambda..sub.0 /dk being the differential of a function held between .lambda..sub.0 and k determined beforehand from the distribution of the refractive index within the primary preform. When the outer deposition is performed in this way, a great improvement can be obtained in the uniformity of the zero-dispersion wavelength of the optical fiber prepared by drawing the preform.

    摘要翻译： 提出了一种改进方法，其中通过在由中心核心构成的初级预制件上和周围的外部沉积来完成二次预型体的包覆层来制备作为光纤前体的步进折射率石英玻璃预制件的方法，以及 以使得不等式|dλ0 / dk |≤500nm满足下述方式对包覆层进行外部沉积，其中k是初级预制棒的直径与直径的比率 次级预制件和λ0是通过拉制次级预制件获得的光纤的零色散波长（nm），dλ0 / dk是预先从折射率分布预先确定的λ0和k之间保持的函数的差分 初级预制件内的折射率。 当以这种方式进行外部沉积时，通过拉伸预制件制备的光纤的零色散波长的均匀性可以获得很大的改进。

    Method for the preparation of a porous silica glass preform for optical fibers
    5.
    发明授权
    Method for the preparation of a porous silica glass preform for optical fibers 失效
    制备光纤多孔石英玻璃预制件的方法

    公开(公告)号：US6145344A

    公开(公告)日：2000-11-14

    申请号：US284902

    申请日：1994-08-02

    申请人： Hiroshi Oyamada ,  Hiroyuki Koide ,  Goh Ogino ,  Hideo Hirasawa

    发明人： Hiroshi Oyamada ,  Hiroyuki Koide ,  Goh Ogino ,  Hideo Hirasawa

    IPC分类号： C03B37/018 ,  C03B37/014 ,  G02B6/00 ,  G02B6/036

    CPC分类号： G02B6/03633 ,  C03B37/0142 ,  G02B6/02042 ,  C03B2203/22 ,  C03B2203/34 ,  C03B2207/06 ,  C03B2207/50 ,  C03B2207/60 ,  C03B2207/64 ,  C03B2207/66 ,  G02B6/0281 ,  G02B6/0286

    摘要： Proposed is an improvement in the VAD process for the preparation of a porous silica glass preform for double-core optical fibers by using three oxyhydrogen flame burners installed one above the other in a flame hydrolysis chamber in which a porous silica glass body consisting of the center core portion formed by the lowermost burner, side core portion formed by the middle burner and the cladding layer formed by the uppermost burner is gradually pulled up as it grows under rotation. Different from conventional procedures in which the extension of the nozzle axis of each of the burners intersects with the rotation axis of the growing body, the extension of the nozzle axis of the middle burner for the side core is displaced in a horizontal direction by a limited distance not to intersect nor to be in parallel with the rotation axis in the invention. By this means, an improvement is obtained in the uniformity of distribution of the refractive index in the side core which otherwise is remarkably disordered.

    摘要翻译： 提出了通过在火焰水解室中使用三个氢氧焰燃烧器一起制备用于双芯光纤的多孔石英玻璃预制件的VAD方法的改进，其中由中心组成的多孔石英玻璃体 由最下面的燃烧器形成的芯部，由中间燃烧器形成的侧芯部和由最上面的燃烧器形成的包覆层随着其旋转而逐渐上升。 与常规方法不同，其中每个燃烧器的喷嘴轴线的延伸与生长体的旋转轴线相交，用于侧芯的中间燃烧器的喷嘴轴线的延伸在水平方向上被限制 在本发明中不相交或不与旋转轴平行的距离。 通过这种方式，在侧核中折射率分布的均匀性得到改善，否则其显着无序。

    Method of manufacturing a glass based material with defect removal
    6.
    发明授权
    Method of manufacturing a glass based material with defect removal 有权
    制造具有缺陷去除的玻璃基材料的方法

    公开(公告)号：US07698908B2

    公开(公告)日：2010-04-20

    申请号：US11012345

    申请日：2004-12-16

    申请人： Hiroshi Oyamada

    发明人： Hiroshi Oyamada

    IPC分类号： C03B37/018

    CPC分类号： C03B37/01228 ,  C03B37/01225 ,  C03B37/01466 ,  C03B37/0253 ,  G01M11/3109 ,  G02B6/02

    摘要： A glass base material, which is a base material of an optical fiber, comprising: a core; and a clad surrounding the core; wherein: a rate of change in a relative-refractive-index-difference between the core and the clad in a longitudinal direction of the glass base material is substantially 6% or less.

    摘要翻译： 1.一种玻璃基材，其是光纤的基材，包括：芯; 和围绕核心的包层; 其中，所述玻璃基材的长度方向的芯与包层的相对折射率差的变化率为6％以下。

    Preform and method for manufacturing same
    7.
    发明申请
    Preform and method for manufacturing same 审中-公开

    公开(公告)号：US20060191296A1

    公开(公告)日：2006-08-31

    申请号：US11403850

    申请日：2006-04-14

    申请人： Hiroshi Oyamada ,  Dai Inoue ,  Tetsuya Otosaka

    发明人： Hiroshi Oyamada ,  Dai Inoue ,  Tetsuya Otosaka

    IPC分类号： C03B37/01

    CPC分类号： C03B37/0146 ,  C03B37/01466 ,  C03B37/0148

    摘要： In respect of a method for manufacturing a preform of an optical fiber, the method comprises the steps of forming a porous glass preform by accumulating glass particles, preparing a container made of a quartz glass, which is formed by heating the quartz glass with an electric furnace, providing a dehydration gas and an inert gas to the container, heating the container to which dehydration gas and inert gas is provided and dehydrating and sintering the porous glass preform by inserting the porous glass preform into the container, which is heated.

    Optical fiber and method for manufacturing silica glass
    9.
    发明授权
    Optical fiber and method for manufacturing silica glass 有权
    光纤及石英玻璃制造方法

    公开(公告)号：US09025922B2

    公开(公告)日：2015-05-05

    申请号：US13403983

    申请日：2012-02-24

    申请人： Hiroshi Oyamada

    发明人： Hiroshi Oyamada

    IPC分类号： G02B6/02 ,  C03C25/60

    CPC分类号： C03C25/607 ,  C03C2201/21 ,  C03C2201/22

    摘要： A method for manufacturing deuterium-treated silica glass includes exposing silica glass to a deuterium-containing atmosphere for a predetermined period of time to diffuse deuterium molecules within the silica glass, maintaining the silica glass at 40° C. or higher, and cooling the silica glass to room temperature. The silica glass is a silica glass-based optical fiber having a core made of silica glass, where the core is positioned at a center of the optical fiber and contains at least germanium, and a clad made of silica glass, where the clad surrounds the core and has a lower refractive index than the core. A surface of the silica glass is covered with a resin coating.

    摘要翻译： 制备氘处理石英玻璃的方法包括将二氧化硅玻璃暴露于含氘气氛中一段预定的时间以将氘分子扩散到二氧化硅玻璃内，保持二氧化硅玻璃在40℃或更高，并冷却二氧化硅 玻璃到室温。 石英玻璃是具有由石英玻璃制成的芯的二氧化硅玻璃基光纤，其中芯位于光纤的中心并且至少包含锗，并且由石英玻璃制成的包层，其中包层围绕 并具有比芯更低的折射率。 石英玻璃的表面被树脂涂层覆盖。

    Optical Fiber, Optical Fiber Preform and Method of Fabricating Same
    10.
    发明申请
    Optical Fiber, Optical Fiber Preform and Method of Fabricating Same 审中-公开
    光纤，光纤预制件及其制造方法

    公开(公告)号：US20120057834A1

    公开(公告)日：2012-03-08

    申请号：US13226110

    申请日：2011-09-06

    申请人： Hiroshi Oyamada ,  Tetsuya Otosaka

    发明人： Hiroshi Oyamada ,  Tetsuya Otosaka

    IPC分类号： G02B6/036

    CPC分类号： G02B6/028 ,  C03B37/01413 ,  C03B2201/12 ,  C03B2203/23 ,  G02B6/0365

    摘要： An optical fiber capable of suppressing an increase of a transmission loss after exposure of the optical fiber to hydrogen or deuterium is provided. The optical fiber has a core region, an inner cladding region surrounding the core region, a trench region surrounding the inner cladding region, an outer cladding region surrounding the trench region, and a refractive index varying region arranged between the inner cladding region and the trench region, the refractive index varying region having a refractive index gradually increasing from the trench region to the inner cladding region.

    摘要翻译： 提供了一种能够抑制光纤暴露于氢或氘之后的传输损失增加的光纤。 光纤具有芯区域，围绕芯区域的内包层区域，围绕内包层区域的沟槽区域，围绕沟槽区域的外包层区域和布置在内包层区域和沟槽之间的折射率变化区域 区域，折射率变化区域具有从沟槽区域到内包层区域逐渐增加的折射率。