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    Method of making solid preforms and optical fibers drawn therefrom
    53.
    发明授权
    Method of making solid preforms and optical fibers drawn therefrom 失效
    制作固体预成型件和从其中拉出的光纤的方法

    公开(公告)号：US4341441A

    公开(公告)日：1982-07-27

    申请号：US761746

    申请日：1977-01-24

    Applicant: Paul E. Lighty ,  Philip W. Black ,  John Irven

    Inventor： Paul E. Lighty ,  Philip W. Black ,  John Irven

    IPC: C03B37/018 ,  G02B6/00 ,  G02B6/44 ,  C03B37/025 ,  C03B37/075

    CPC classification number: C03B37/01861 ,  C03B37/01807 ,  C03B37/01853 ,  C03B37/01869 ,  G02B6/4492 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2205/16

    Abstract: An optical glass fiber is formed of an inner layer of germania doped glass within the bore of the outer cladding tube of silica. The tube with the higher index of refraction inner layer is rotated while being heated to collapse the bore to form an optical fiber preform. The preform is then drawn into fiber in a separate operation. A first silica layer can be deposited within the tube bore before the germania doped layer. The deposition of germania takes place under hydrogen free conditions. Appropriate heat treatment of the tube avoids excessive evaporation of germania and provides a graded transition of the refractive index in the boundary between core and cladding.

    Abstract translation: 光学玻璃纤维由二氧化硅外包层的孔内的由掺杂锗的玻璃的内层形成。 具有较高折射率内层的管旋转同时被加热以使孔塌缩以形成光纤预制件。 然后将预成型件在单独的操作中拉制成纤维。 第一二氧化硅层可以在氧化锗掺杂层之前沉积在管孔内。 铀的沉积在无氢条件下进行。 管的适当热处理避免了氧化锗的过度蒸发，并且提供了芯和包层之间的边界中折射率的渐变过渡。

    Continuous optical fiber preform fabrication method
    55.
    发明授权
    Continuous optical fiber preform fabrication method 失效
    连续光纤预制棒制造方法

    公开(公告)号：US4062665A

    公开(公告)日：1977-12-13

    申请号：US784869

    申请日：1977-04-05

    Applicant: Tatsuo Izawa ,  Tadashi Miyashita ,  Fumiaki Hanawa

    Inventor： Tatsuo Izawa ,  Tadashi Miyashita ,  Fumiaki Hanawa

    IPC: C03B37/018 ,  C03B37/014 ,  G02B6/00 ,  C03B37/00

    CPC classification number: C03B37/01426 ,  C03B37/014 ,  C03B37/01406 ,  C03B37/01413 ,  C03B37/0142 ,  C03B2201/06 ,  C03B2201/10 ,  C03B2201/42 ,  C03B2203/22 ,  C03B2207/04 ,  C03B2207/12 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/42 ,  C03B2207/62 ,  C03B2207/70 ,  C03B2207/81 ,  C03B2207/86

    Abstract: A refractory starting member is rotated and, at the same time, moved along the axis of rotation. A glass raw material for the formation of the core of a porous preform and consequently an optical fiber preform is introduced into a high temperature portion near the tip of a high temperature burner from a nozzle for the core disposed in alignment with the center of rotation of one end face of the starting member. The glass raw material blown out from the nozzle for the core are caused by the flames of the high temperature burner to react to produce glass fine particles, which are deposited on abovesaid end face of the starting member at the central portion thereof in its axial direction to form a porous core. At least one nozzle for spraying a glass raw material for the formation of the cladding of the optical fiber preform is disposed opposite to the end face of the starting member but a little deviated from the axis of rotation thereof, or disposed opposite to the peripheral surface of the porous core. The glass raw material for the cladding is sprayed from the nozzle for the cladding to the high temperature portion of the high temperature burner, and caused to react to form glass fine particles, which are deposited on the end face of the starting member on the outside of the porous core or on the peripheral surface thereof at the same time as the formation of the latter, forming a porous cladding. The porous preform thus obtained is moved into a high temperature furnace provided on the path of movement of the preform for the vitrification thereof into an optical fiber preform.

    Abstract translation: 旋转耐火起动部件，并且同时沿着旋转轴线移动。 用于形成多孔预成型件的核心的玻璃原料以及因此的光纤预制件被引入到高温燃烧器的尖端附近的高温部分中，所述高温部分从用于芯部的喷嘴设置成与旋转中心 起始构件的一个端面。 从芯的喷嘴吹出的玻璃原料是由高温燃烧器的火焰引起的反应而产生的玻璃微粒，它们在其中心部分的轴向方向沉积在起始构件的上端面上 以形成多孔芯。 用于喷射用于形成光纤预制件的包层的玻璃原料的至少一个喷嘴设置成与起始构件的端面相对，但是稍微偏离其旋转轴线，或者与周面相对设置 的多孔芯。 用于包层的玻璃原料从用于包层的喷嘴喷射到高温燃烧器的高温部分，并使其反应形成玻璃细颗粒，其沉积在外部的起始构件的端面上 的多孔芯或其外周表面，同时形成多孔芯，形成多孔包层。 将由此获得的多孔预制件移动到设置在预成型体的运动路径上的高温炉中，以将其玻璃化成为光纤预制件。

    Method of producing glass for optical waveguides
    58.
    发明授权
    Method of producing glass for optical waveguides 失效
    生产玻璃用于光波导的方法

    公开(公告)号：US3791714A

    公开(公告)日：1974-02-12

    申请号：US3791714D

    申请日：1972-03-30

    Applicant: CORNING GLASS WORKS

    Inventor： MAURER R

    IPC: C03B37/018 ,  C03B19/14 ,  C03B32/00 ,  C03B37/014 ,  C03C3/00 ,  C03C13/04 ,  G02B6/00 ,  G02B6/10 ,  G02B5/14 ,  C03C15/00 ,  C03C25/02

    CPC classification number: G02B6/102 ,  C03B19/1415 ,  C03B32/00 ,  C03B37/01413 ,  C03B2201/22 ,  C03B2201/32 ,  C03B2201/42 ,  C03B2207/86 ,  C03C3/00 ,  C03C13/047 ,  Y10S65/90

    Abstract: Deuterium is used instead of hydrogen in a process for producing glass having low hydroxyl ion content. In a flame hydrolysis process deuterium gas, or a deuterium compound gas, is passed through a liquid containing a silicon compound such as silicon tetrachloride. The resulting vapor is burned to deposit a film of silicon dioxide on a rotating mandrel. Glass produced in this manner is particularly suitable for use as optical waveguides. The hydroxyl ion normally present in glass produced in the presence of hydrogen is replaced by the deuterium containing ion OD . Absorption peaks normally caused by the presence of the hydroxyl ions are shifted to longer wavelengths at which the absorptions are not troublesome when the waveguide is used to transmit light in the band of approximately 7,000A.

    Abstract translation: 在制造具有低羟基离子含量的玻璃的方法中，使用氘代替氢。 在火焰水解过程中，氘气或氘化合物气体通过含有硅化合物如四氯化硅的液体。 所形成的蒸汽被燃烧以在旋转的心轴上沉积二氧化硅膜。 以这种方式制造的玻璃特别适用于光波导。 通常存在于在氢存在下生产的玻璃中的羟基离子被含有氘的离子OD - 代替。 通常由羟基离子的存在引起的吸收峰被转移到更长的波长，在该波长处，当波导用于在约7,000A的频带中透射光时，吸收不是麻烦的。

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