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    Method of making a large MCVD single mode fiber preform by varying internal pressure to control preform straightness
    31.
    发明授权
    Method of making a large MCVD single mode fiber preform by varying internal pressure to control preform straightness 失效
    通过改变内部压力来制造大型MCVD单模纤维预成型件以控制预成型件直线度的方法

    公开(公告)号：US6105396A

    公开(公告)日：2000-08-22

    申请号：US115783

    申请日：1998-07-14

    Applicant: Paul Francis Glodis ,  Charles Francis Gridley ,  Donald Paul Jablonowski ,  David Kalish ,  Kenneth Lee Walker

    Inventor： Paul Francis Glodis ,  Charles Francis Gridley ,  Donald Paul Jablonowski ,  David Kalish ,  Kenneth Lee Walker

    IPC: C03C3/04 ,  C03B37/012 ,  C03B37/018 ,  C03B37/027

    CPC classification number: C03B37/01211 ,  C03B37/01869 ,  C03B37/01884 ,  C03B37/01892 ,  C03B2201/02 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2203/24

    Abstract: A large optical preform 303 is made by a modified chemical vapor deposition (MCVD) process by depositing successive layers of core and cladding materials onto the inside surface of a rotating glass tube 33 having a hydroxyl ion (OH.sup.-) level that is less than 0.5 parts per million (ppm) by weight. The tube is then collapsed inwardly to form a core rod 301 in which the deposited core material 31 has a diameter that is greater than about 5 millimeters and the deposited cladding material 32 has an outside diameter that is less than about 15 millimeters. A machine-vision system 140, 150, 160 monitors and controls the diameter of the glass tube by regulating the pressure within the tube. Moreover, the machine-vision system monitors and controls the straightness of the tube by varying its rotational speed according to angular position. After the core rod 301 is formed, it is plasma etched to remove contaminants, and then overclad with two glass jackets 34, 35 having a hydroxyl ion (OH.sup.-) level that is less than 1.0 ppm by weight to create a large preform 303 from which about 400 kilometers of singlemode optical fiber can be drawn per meter of length.

    Abstract translation: 通过改进的化学气相沉积（MCVD）工艺，通过将核心和包层材料的连续层沉积到具有小于0.5的羟基离子（OH-）水平的旋转玻璃管33的内表面上来制造大型光学预成型件303 百万分之几（ppm）（重量）。 管然后向内折叠以形成芯棒301，其中沉积的芯材料31具有大于约5毫米的直径，并且沉积的包层材料32具有小于约15毫米的外径。 机器视觉系统140,150,160通过调节管内的压力来监视和控制玻璃管的直径。 此外，机器视觉系统通过根据角度位置改变其转速来监测和控制管的平直度。 在形成芯棒301之后，将其等离子体蚀刻以除去污染物，然后用两个小于1.0重量ppm的羟基离子（OH-）水平的两个玻璃外套34,35包覆，以从 每米长度可以绘制约400公里的单模光纤。

    Method of providing vaporized halide-free, silicon-containing compounds
    32.
    发明授权
    Method of providing vaporized halide-free, silicon-containing compounds 失效
    提供不含卤化物的含硅化合物的方法

    公开(公告)号：US5632797A

    公开(公告)日：1997-05-27

    申请号：US368318

    申请日：1994-12-30

    Applicant: Richard R. Williams

    Inventor： Richard R. Williams

    IPC: G02B6/00 ,  B01D1/22 ,  B01D3/06 ,  C03B8/04 ,  C03B19/14 ,  C03B37/014 ,  C03B37/018 ,  C23C16/40 ,  C23C16/448

    CPC classification number: C03B19/1415 ,  B01D1/22 ,  B01D3/06 ,  C03B37/01413 ,  C23C16/402 ,  C23C16/4486 ,  C03B2201/02 ,  C03B2207/20 ,  C03B2207/32 ,  C03B2207/36 ,  C03B2207/85 ,  Y10S261/65

    Abstract: A vaporizer for halide-free, silicon-containing liquid reactants used in producing preforms is provided. The vaporizer includes a heated, vertically-oriented expansion chamber (20) and a vertical hollow shaft (42) which extends into the chamber and has a plurality of orifices (45) at its upper end (44). Preheated reactant is supplied to the vertical shaft (42) at an elevated pressure and is sprayed onto the chamber's heated wall (22) by the orifices (45). A portion of the liquid reactant vaporizes upon entering the internal volume (24) of the chamber (20) due to the pressure drop between the inside of the shaft and the inside of the chamber. The remainder of the liquid reactant vaporizes by being heated through contact with the chamber's wall (22). Higher molecular weight species present in the raw material or generated by the vaporization process are collected in the bottom portion of the chamber where they can be periodically removed.

    Abstract translation: 提供了一种用于制造预成型件的无卤素，含硅液体反应物的蒸发器。 蒸发器包括一个加热的垂直取向的膨胀室（20）和一个垂直的空心轴（42），该空心轴（42）在其上端（44）处延伸到腔室中并具有多个孔口（45）。 预热的反应物以升高的压力供应到垂直轴（42），并通过孔（45）喷射到室的加热壁（22）上。 液体反应物的一部分在进入室（20）的内部体积（24）时由于轴的内部和室内部之间的压降而蒸发。 液体反应物的其余部分通过与室的壁（22）接触而加热而蒸发。 存在于原料中或通过蒸发过程产生的较高分子量物质被收集在室的底部，其中它们可以周期性地除去。

    Method of manufacturing graded index optical fibers
    36.
    发明授权
    Method of manufacturing graded index optical fibers 失效
    渐变折射率光纤的制造方法

    公开(公告)号：US4163654A

    公开(公告)日：1979-08-07

    申请号：US898838

    申请日：1978-04-21

    Applicant: David A. Krohn ,  Seymour Merrin

    Inventor： David A. Krohn ,  Seymour Merrin

    IPC: C03B37/014 ,  C03B37/012 ,  C03B37/027 ,  G02B6/00 ,  G02B5/14

    CPC classification number: C03B37/027 ,  C03B37/01271 ,  C03B37/01297 ,  C03B2201/02 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2203/22 ,  Y02P40/57

    Abstract: A process is disclosed for making an optical fiber having a graded index glass core enveloped by a cladding material. The ingredients from which the peripheral part of the core glass is to be formed are placed in a closed tube of the cladding material which is more refractory than the core glass. The ingredients are melted to form a glassy liquid which is fined within the tube and then coated (for example, by rotational casting) on the inner surface of the tube. Additional ingredients, from which the inner part of the core glass is to be formed, are then placed in the coated tube, melted and similarly coated on the inner surface of the tube. In this way successive core glass layers, each having a different index of refraction, may be formed within the tube of cladding material. The temperature is then elevated further and the tube and glassy liquid drawn into a fiber.

    Abstract translation: 公开了一种制造具有由包覆材料包围的渐变折射率玻璃芯的光纤的方法。 要形成核心玻璃的周边部分的成分被放置在比芯玻璃更难熔的包层材料的封闭管中。 将成分熔化以形成玻璃状液体，该液体在管内被精细化，然后在管的内表面上涂覆（例如通过旋转铸造）。 然后将待形成核心玻璃的内部的另外的成分放置在涂覆的管中，熔化并类似地涂覆在管的内表面上。 以这种方式，可以在包层材料的管内形成各自具有不同折射率的连续的芯玻璃层。 然后进一步升高温度，并将管和玻璃液体吸入纤维中。

    Method of forming optical waveguide fibers
    38.
    再颁专利
    Method of forming optical waveguide fibers 失效

    公开(公告)号：USRE28029E

    公开(公告)日：1974-06-04

    申请号：US28029D

    申请日：1973-06-21

    IPC: C03B37/014 ,  C03B37/027

    CPC classification number: C03B37/01413 ,  C03B37/01466 ,  C03B37/01473 ,  C03B37/027 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2203/24 ,  C03B2203/28 ,  C03B2205/16

    Abstract: A METHOD OF FORMING AN OPTICAL WAVEGUIDE BY FORMING A FIRST COATING OF GLASS HAVING A PREDETERMINED INDEX OF REFRACTION ON THE OUTSIDE PERIPHERAL WALL SURFACE OF A SUBSTANTIALLY CYLINDRICAL STARTER ROD OR MEMBER. THEREAFTER, A SECOND COATING OF GLASS IS APPLIED TO THE PERIPHERAL OUTSIDE SURFACE OF THE FIRST COATING, SAID SECOND COATING HAVING A PRESELECTED INDEX OF REFRACTION LESS THAN THE INDEX OF REFRACTION OF THE FIRST COATING. THE STARTER ROD OR MEMBER IS REMOVED FROM THE ASSEMBLY FOLLOWING THE APPLICATION OF EITHER THE FIRST OR SECOND COATING. THE RESULTING SUBSTANTIALLY CYLINDRICAL HOLLOW ASSEMBLY IS HEATED AND DRAWN TO REDUCE THE CROSS-SECTIONAL AREA AND TO COLLAPSE THE FIRST AND INNER COATING OF GLASS TO FORM A FIBER HAVING A SOLID CROSSSECTIONAL AREA. THE COLLAPSED FIRST AND INNER COATING FORMS THE FIBER CORE AND THE SECOND COATING FORMS THE CLADDING FOR THE FIBER.

    Optical transmission line
    39.
    发明授权
    Optical transmission line 失效
    光传输线

    公开(公告)号：US3778132A

    公开(公告)日：1973-12-11

    申请号：US3778132D

    申请日：1972-10-06

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： PINNOW D ,  VAN UITERT L ,  WILLIAMS J

    IPC: C03C3/06 ,  C03B37/027 ,  C03C3/064 ,  C03C3/089 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02 ,  G02B5/14

    CPC classification number: C03B37/027 ,  C03B2201/02 ,  C03B2201/10 ,  G02B6/02

    Abstract: Optical transmission lines suitable for transmitting electromagnetic radiation within the visible spectrum and adjoining portions of the infrared and ultraviolet spectra consists of a pure amorphous silica core clad by a B2O3-modified silica cladding. The cladding may manifest a substantial uniform refractive index of a value at least 0.1 percent less than that of the core or may be graded to such a lowered value.

    Abstract translation: 适用于在可见光谱范围内传输电磁辐射的光传输线和红外和紫外光谱的相邻部分由纯B2O3改性的二氧化硅包层包裹的纯无定形二氧化硅芯组成。 包层可以表现出比芯的至少0.1％的基本上均匀的折射率，或者可以被分级到这样一个较低的值。

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