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    Single Mode Optical Fiber and Manufacturing Method Therefor
    4.
    发明申请
    Single Mode Optical Fiber and Manufacturing Method Therefor 审中-公开
    单模光纤及其制造方法

    公开(公告)号：US20090084141A1

    公开(公告)日：2009-04-02

    申请号：US12327993

    申请日：2008-12-04

    申请人： Tomohiro Nunome ,  Hiroshi Kutami ,  Manabu Saitou ,  Kenji Okada ,  Munehisa Fujimaki ,  Koichi Harada

    发明人： Tomohiro Nunome ,  Hiroshi Kutami ,  Manabu Saitou ,  Kenji Okada ,  Munehisa Fujimaki ,  Koichi Harada

    IPC分类号： C03B37/018

    CPC分类号： C03B37/01413 ,  C03B37/02718 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2205/56 ,  G02B6/03622 ,  Y02P40/57

    摘要： An optical fiber is formed by performing vapor phase deposition of SiO2 on the outside of a glass rod comprising a core section and a first cladding section and drawing a glass preform which formed by a second cladding section. Also, a single mode optical fiber is manufactured so that the ratio of the diameter D of the first cladding section and the diameter d of the core section is in a range of 4.0 to 4.8, and OH concentration is 0.1 ppm or less. Also, an optical fiber is manufactured so that a value of D/d>4.8, and the OH concentration is 0. 1 ppm or less. It is thereby possible to maintain an initial loss in the 1380 nm wavelength range even if hydrogen diffusion occurs.

    摘要翻译： 通过在包括芯部和第一包层部分的玻璃棒的外部进行SiO 2的气相沉积并且拉制由第二包层部形成的玻璃预制件来形成光纤。 此外，制造单模光纤，使得第一包层部分的直径D和芯部分的直径d的比率在4.0至4.8的范围内，并且OH浓度为0.1ppm或更小。 此外，制造光纤，使得D / d> 4.8的值和OH浓度为0.1ppm以下。 因此即使发生氢扩散，也可以保持1380nm波长范围的初始损耗。

    Drawing method for bare optical fiber, manufacturing method for optical fiber, and optical fiber
    6.
    发明申请
    Drawing method for bare optical fiber, manufacturing method for optical fiber, and optical fiber 有权
    裸光纤拉丝方法，光纤制造方法和光纤

    公开(公告)号：US20060204193A1

    公开(公告)日：2006-09-14

    申请号：US11433576

    申请日：2006-05-15

    申请人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

    发明人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

    IPC分类号： G02B6/02

    CPC分类号： C03B37/0253 ,  C03B37/02718 ,  C03B37/029 ,  C03B2201/23 ,  C03B2205/40 ,  C03B2205/56 ,  C03B2205/72 ,  C03C13/045 ,  C03C2201/23 ,  Y02P40/57

    摘要： A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating and melting step, wherein a temperature history during the drawing the optical fiber preform to obtain the bare optical fiber in the heating device satisfies a relational expression: T≦−0.01X+12 where a time period when the heated and molten portion of the optical fiber preform heated and molten by the heating device reaches 1800° C. or higher is T (min) and a OH group concentration in a cladding layer of the optical fiber preform is X (wtppm).

    摘要翻译： 一种裸光纤的拉丝方法，包括以下步骤：使用加热装置熔化光纤预制棒并拉制裸光纤; 并且在加热熔融步骤之后自然地冷却裸光纤或强制地冷却裸光纤，其中在加热装置中获得裸光纤的拉伸期间的温度历史满足了 关系表达式：T <= -0.01X + 12其中加热装置加热熔化的光纤预制件的加热和熔融部分达到1800℃或更高的时间段为T（min），OH基浓度 在光纤预制件的包覆层中为X（wtppm）。

    Optical fiber drawing die and drawing method therefor
    7.
    发明授权
    Optical fiber drawing die and drawing method therefor 有权

    公开(公告)号：US07041334B2

    公开(公告)日：2006-05-09

    申请号：US10313402

    申请日：2002-12-06

    申请人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

    发明人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

    IPC分类号： B05D5/06

    CPC分类号： B29D11/00663 ,  B29L2011/0075

    摘要： An optical fiber coating die is made such that an interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a pressure value of resin inside a coating cup, and the interfacial shear rate is in a range of −1.5×105 to 0 sec−1. Also, an optical fiber drawing die is made such that the interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a diameter of a coating resin, and the interfacial shear rate is in a range of range of −3×105 to 2×105 sec−1. By doing this, an optical fiber drawing die which can be used in an optical fiber drawing method so as to realize stable resin coating operation even in high-speed drawing operation and high productivity can be realized.

    Optical fiber drawing die and drawing method therefor
    8.
    发明申请
    Optical fiber drawing die and drawing method therefor 审中-公开

    公开(公告)号：US20060016393A1

    公开(公告)日：2006-01-26

    申请号：US11187662

    申请日：2005-07-22

    申请人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

    发明人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

    IPC分类号： B29D11/00

    CPC分类号： B29D11/00663 ,  B29L2011/0075

    摘要： An optical fiber coating die is made such that an interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a pressure value of resin inside a coating cup, and the interfacial shear rate is in a range of −1.5×105 to 0 sec−1. Also, an optical fiber drawing die is made such that the interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a diameter of a coating resin, and the interfacial shear rate is in a range of range of −3×105 to 2×105 sec−1. By doing this, an optical fiber drawing die which can be used in an optical fiber drawing method so as to realize stable resin coating operation even in high-speed drawing operation and high productivity can be realized.

    Method of producing zinc oxide semiconductor crystal
    10.
    发明授权
    Method of producing zinc oxide semiconductor crystal 有权
    生产氧化锌半导体晶体的方法

    公开(公告)号：US08268075B2

    公开(公告)日：2012-09-18

    申请号：US12305802

    申请日：2007-06-22

    申请人： Koji Omichi ,  Yoshikazu Kaifuchi ,  Munehisa Fujimaki ,  Akihiko Yoshikawa

    发明人： Koji Omichi ,  Yoshikazu Kaifuchi ,  Munehisa Fujimaki ,  Akihiko Yoshikawa

    IPC分类号： C30B23/00 ,  C30B25/00 ,  C30B28/12 ,  C30B28/14

    CPC分类号： C23C14/086 ,  C23C14/46 ,  C30B23/02 ,  C30B29/16 ,  H01L21/02403 ,  H01L21/0242 ,  H01L21/02472 ,  H01L21/02554 ,  H01L21/02565 ,  H01L21/02573 ,  H01L21/02631

    摘要： A method of producing a zinc oxide-based semiconductor crystal, including: introducing at least zinc and oxygen on a surface of a substrate; and growing a zinc oxide-based semiconductor crystal on the substrate, wherein a total or partial portion of the zinc is ionized in a vacuum atmosphere of 1×10−4 Torr or less and is introduced to the surface of the substrate to grow the ZnO based semiconductor crystal. As a result, it is possible to provide a method of producing a zinc oxide based semiconductor crystal capable of growing a zinc oxide semiconductor crystal having excellent surface flatness and crystallinity and including an extremely small amount of impurities at a high growth rate.

    摘要翻译： 一种氧化锌系半导体晶体的制造方法，其特征在于，包括：在基板的表面上至少引入锌和氧; 以及在衬底上生长氧化锌基半导体晶体，其中锌的全部或部分部分在1×10 -4乇或更小的真空气氛中离子化，并被引入衬底的表面以使ZnO 基于半导体晶体。 结果，可以提供一种能够生长具有优异的表面平坦度和结晶度并且以高生长速率包含极少量的杂质的氧化锌半导体晶体的氧化锌基半导体晶体的制造方法。