Apparatus for fabricating optical fiber preform and method for fabricating low water peak fiber using the same
    31.
    发明申请
    Apparatus for fabricating optical fiber preform and method for fabricating low water peak fiber using the same 审中-公开
    用于制造光纤预制件的设备和使用该预制件制造低水峰光纤的方法

    公开(公告)号:US20070157674A1

    公开(公告)日:2007-07-12

    申请号:US11545847

    申请日:2006-10-11

    CPC分类号: C03B37/01466 C03B37/01446

    摘要: Disclosed is a method for fabricating an optical fiber preform. The method includes: (a) growing a first soot preform on a starting member along a lengthwise direction of the starting member by a soot deposition; (b) dehydrating the first soot preform; (c) sintering the dehydrated first soot preform, to obtain a first glassed optical preform; and (d) elongating the first optical fiber preform by heating the first optical fiber with a heat source that excludes hydrogen, wherein the first glassed optical fiber is elongated by means of only a heat source that excludes the use of hydrogen.

    摘要翻译: 公开了一种制造光纤预制棒的方法。 该方法包括:(a)通过烟灰沉积沿起始构件的长度方向在起始构件上生长第一烟灰预制件; (b)使第一烟炱预制件脱水; (c)烧结脱水的第一烟炱预制件,以获得第一玻璃化的光学预型件; 以及(d)通过用排除氢气的热源对所述第一光纤进行加热来延长所述第一光纤预制件,其中,所述第一玻璃纤维仅借助于排除使用氢的热源而伸长。

    Low loss optical fiber designs and methods for their manufacture
    32.
    发明申请
    Low loss optical fiber designs and methods for their manufacture 审中-公开
    低损耗光纤设计及其制造方法

    公开(公告)号:US20070003198A1

    公开(公告)日:2007-01-04

    申请号:US11170257

    申请日:2005-06-29

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

    Process for manufacturing an article made of an
oxide-dispersion-strengthened alloy
    34.
    发明授权
    Process for manufacturing an article made of an oxide-dispersion-strengthened alloy 失效
    用于制造由氧化物分散强化合金制成的制品的方法

    公开(公告)号:US6042662A

    公开(公告)日:2000-03-28

    申请号:US99206

    申请日:1998-06-18

    申请人: Jean-Paul Bagard

    发明人: Jean-Paul Bagard

    摘要: This process makes it possible to manufacture articles of any shape by stamping, in which articles the matrix of the alloy has to have a coarse-grained structure. According to the invention, a partial hot-forming operation is carried out by stamping a blank made of an oxide-dispersion-strengthened alloy, especially a nickel-based alloy, having an initial ultrafine-grained structure, in order to form a shaped component, this shaped component is subjected to a secondary recrystallization heat treatment so as to develop an abnormal grain growth, and then a new hot-forming operation is carried out by stamping in order to give the recrystallized shaped component the final shape of the article.

    摘要翻译: 该方法使得可以通过冲压来制造任何形状的制品,其中合金的基体必须具有粗粒度结构。 根据本发明,通过冲压由具有初始超细晶粒结构的氧化物分散强化合金,特别是镍基合金制成的坯件,进行部分热成型操作,以便形成成形部件 对该成形部件进行二次再结晶热处理,从而产生异常晶粒生长,然后通过冲压进行新的热成型操作,以使再结晶成形部件成为制品的最终形状。

    Method for manufacturing an article comprising a refractory a dielectric
body
    35.
    发明授权
    Method for manufacturing an article comprising a refractory a dielectric body 失效
    一种用于制造包括电介质体耐火材料的制品的方法

    公开(公告)号:US5979190A

    公开(公告)日:1999-11-09

    申请号:US118743

    申请日:1998-07-17

    摘要: A refractory dielectric body is heated with a plasma fireball at conditions which do not result in substantial removal of a surface portion of the body, yet which are sufficient to reduce both surface and bulk impurities. Typically, the body is treated with the plasma in the absence of simultaneous deposition of material onto the body. Advantageously, an isothermal, oxygen or oxygen-containing plasma is utilized. The invention is useful for reducing chlorine impurities by at least about 30% to a depth of at least about 10 .mu.m, with accompanying reduction of hydroxyl impurities. The invention thus provides a useful method for reducing the concentration of impurities that contribute to imperfections during the process of drawing fiber from an optical fiber preform, without requiring substantial removal of the surface of the preform.

    摘要翻译: 在不会导致主体的表面部分的基本去除的条件下,用等离子体火球加热难熔电介质体,但这足以减少表面和体积杂质。 通常,在不将材料同时沉积到身体上的情况下,用等离子体处理身体。 有利地,使用等温,含氧或含氧等离子体。 本发明可用于将氯杂质减少至少约30%至至少约10μm的深度,伴随着羟基杂质的减少。 因此,本发明提供了一种有用的方法,用于在从纤维预制棒中拉伸纤维的过程中减少有助于缺陷的杂质的浓度,而不需要基本上去除预型体的表面。

    Method for increasing adhesion between a coating and an optical glass
fiber electron beam pretreatment
    36.
    发明授权
    Method for increasing adhesion between a coating and an optical glass fiber electron beam pretreatment 失效
    增加涂层与光学玻璃纤维电子束预处理之间粘附性的方法

    公开(公告)号:US5812725A

    公开(公告)日:1998-09-22

    申请号:US826388

    申请日:1997-04-09

    申请人: James R. Petisce

    发明人: James R. Petisce

    摘要: This invention provides a method of increasing adhesion of radiation-cured, inner primary coatings on glass optical fibers. A glass optical fiber drawing tower has a controllable variable amperage electron beam for exposing different sections of a glass optical fiber with different amperage levels of electron beam radiation. The different sections of the glass optical fiber after being exposed to the selected amperage levels of electron beam radiation are then coated with an inner primary coating composition which is finally cured by exposure to actinic radiation. Later formed sections of the same glass optical fiber can be exposed to different amperage levels of electron beam radiation and then coated and cured. The different sections of the glass optical fiber which have been coated with an inner primary coating using this method demonstrate correspondingly different degrees of coating adhesion. Reduced levels of adhesion promoter are required for inner primary coating compositions when using this method.

    摘要翻译: 本发明提供了一种增加辐射固化的内部初级涂层对玻璃光纤的附着力的方法。 玻璃光纤拉伸塔具有可控的可变安培电子束,用于暴露具有不同安培数电子束辐射的玻璃光纤的不同部分。 然后将玻璃光纤暴露于所选安培数电子束辐射后的不同部分用内部初级涂层组合物涂覆,该内部初级涂层组合物最终通过暴露于光化辐射而固化。 后来,同一玻璃光纤的成形部分可以暴露于不同电流强度的电子束辐射,然后涂覆和固化。 使用这种方法涂覆有内部初级涂层的玻璃光纤的不同部分表现出相应的不同程度的涂层附着力。 使用该方法时,内部初级涂料组合物需要降低粘合促进剂的含量。

    Process and device for the production of mineral wool nonwoven fabrics
especially from rock wool
    38.
    发明授权
    Process and device for the production of mineral wool nonwoven fabrics especially from rock wool 失效
    用于生产矿棉无纺布的方法和装置特别是从岩棉

    公开(公告)号:US5093069A

    公开(公告)日:1992-03-03

    申请号:US545871

    申请日:1990-06-29

    摘要: In the continuous production of mineral wool nonwoven fabrics, fiber/gas/air mixtures (3, 4) produced by several shredding units (14 to 17) are directed onto collecting conveyor units (19, 21) with suction surfaces (c, d) running in a curve and being under suction pressure for the formation of a wool nonwoven fabric (25). In this case the arrangement is such that an imaginary suction surface, increasing in its size in the conveying direction, is assigned to each fiber/gas/air mixture formed by the individual shredding units (14 to 17), actually d is larger than c. As a result it is possible, in a space-saving method of construction and per collecting conveyor unit to produce mineral wool nonwoven fabrics from rock wool with constant suction pressure with bulk densities even under 25 kg/m.sup.3 in good product quality. By series connection of several units or an oscillating deposit of an individual nonwoven fabric multilayer felt webs can further be formed.

    摘要翻译: 在矿棉无纺布的连续生产中,由多个粉碎单元(14至17)生产的纤维/气/空气混合物(3,4)被引导到具有吸力表面(c,d)的收集输送单元(19,21) 在曲线中运行并处于用于形成羊毛无纺布(25)的吸入压力下。 在这种情况下,这种布置使得其在输送方向上的尺寸增加的假想吸力表面被分配给由各个切碎单元(14至17)形成的每个纤维/气体/空气混合物,实际上d大于c 。 因此,在节省空间的施工方法和每个收集输送机单元中,可以从具有恒定吸入压力的岩棉制造矿棉无纺布,即使在25kg / m 3以下的体积密度下也能获得良好的产品质量。 可以进一步形成多个单元的串联连接或各个非织造布的多层毡的振动沉积。

    Technique for fabricating a gas-in-glass fiber
    40.
    发明授权
    Technique for fabricating a gas-in-glass fiber 失效
    玻璃纤维制造技术

    公开(公告)号:US4623373A

    公开(公告)日:1986-11-18

    申请号:US702387

    申请日:1985-02-15

    申请人: Julian Stone

    发明人: Julian Stone

    CPC分类号: C03C25/00 C03C25/607

    摘要: The present invention relates to a technique for infusing and maintaining a gas-in-glass fiber. In the present technique, a length of an optical fiber, e.g., a single mode fiber, is placed in a pressure vessel with the ends of the fiber protruding from the vessel walls through seals. The vessel is then partially or fully filled with a medium, such as a gas or water, and the vessel sealed. In one embodiment, a container, including both the predetermined gas under pressure and a rupture disc in a container wall, is disposed within the vessel. Pressure is then applied to the sealed vessel until the rupture disc implodes and releases the gas for subsequent infusion. In a second embodiment, the predetermined gas is introduced into the vessel from an outside pressurized source until a first predetermined pressure is obtained within the vessel. A predetermined amount of additional pressure from a second pressure source is then supplied to the vessel until a second predetermined pressure is reached in the vessel. Once the final pressure is achieved by either embodiment, the vessel is maintained in this state.

    摘要翻译: 本发明涉及一种用于输入和维持玻璃内玻璃纤维的技术。 在本技术中,将光纤(例如单模光纤)的长度放置在压力容器中,其中纤维的端部通过密封从容器壁突出。 然后将容器部分或完全填充有诸如气体或水的介质,并将容器密封。 在一个实施例中,在容器内设置包括压力下的预定气体和容器壁中的破裂盘的容器。 然后将压力施加到密封容器上,直到破裂盘打破并释放气体以用于随后的输注。 在第二实施例中,将预定气体从外部加压源引入容器中,直到在容器内获得第一预定压力。 然后将来自第二压力源的预定量的附加压力供应到容器,直到在容器中达到第二预定压力。 一旦通过任一实施例达到最终压力,容器就保持在这种状态。