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    METHOD OF MAKING OPTICAL GLASS WINDOWS FREE OF DEFECTS
    41.
    发明申请
    METHOD OF MAKING OPTICAL GLASS WINDOWS FREE OF DEFECTS 审中-公开
    制造没有缺陷的光学玻璃窗的方法

    公开(公告)号：US20090090135A1

    公开(公告)日：2009-04-09

    申请号：US12240525

    申请日：2008-09-29

    Applicant: Danh C. Tran

    Inventor： Danh C. Tran

    IPC: C03B19/02

    CPC classification number: C03B5/0334 ,  C03B5/18 ,  C03B2201/12 ,  C03B2201/70 ,  C03B2201/82 ,  C03C3/062 ,  C03C4/00

    Abstract: High optical quality glass windows, particularly of low melting and low viscosity glasses and substantially free of defects, particularly adapted for high energy laser applications, are made by stirring the molten glass during cooling without the use of a mechanical stirrer within the glass, by rotating the mold or crucible in which the glass is cooling, using a motion which is not entirely a circular and rotary motion.

    Abstract translation: 特别适用于高能量激光应用的高光学质量玻璃窗，特别是低熔点和低粘度玻璃，基本上没有缺陷，是通过在冷却过程中搅拌熔融玻璃而不使用玻璃内的机械搅拌器，通过旋转 玻璃正在冷却的模具或坩埚，使用不完全是圆形和旋转运动的运动。

    Holey optical fibres of non-silica based glass
    45.
    发明申请
    Holey optical fibres of non-silica based glass 失效
    非二氧化硅基玻璃的多孔光纤

    公开(公告)号：US20030161599A1

    公开(公告)日：2003-08-28

    申请号：US10344685

    申请日：2003-02-14

    Inventor： Neil Gregory Raphael Broderick ,  Daniel William Hewak ,  Tanya Mary Monro ,  David John Richardson ,  Yvonne Deana West

    IPC: G02B006/20

    CPC classification number: G02B6/02347 ,  C03B37/01205 ,  C03B37/0122 ,  C03B2201/60 ,  C03B2201/62 ,  C03B2201/70 ,  C03B2201/78 ,  C03B2201/80 ,  C03B2201/82 ,  C03B2201/83 ,  C03B2201/84 ,  C03B2201/86 ,  C03B2201/88 ,  C03B2203/14 ,  C03B2203/42 ,  C03C13/04 ,  C03C13/041 ,  C03C13/046 ,  C03C13/048 ,  C03C25/106 ,  C03C25/1062 ,  G02B6/02361

    Abstract: To overcome problems of fabricating conventional core-clad optical fibre from non-silica based (compound) glass, it is proposed to fabricate non-silica based (compound) glass optical fibre as holey fibre i.e. one contining Longitudinal holes in the cladding. This removes the conventional problems associated with mismatch of the physical properties of the core and clad compound glasses, since a holey fibre can be made of a single glass composition. With a holey fibre, it is not necessary to have different glasses for the core and cladding, since the necessary refractive index modulation between core and cladding is provided by the microstructure of the clad, i.e. its holes, rather than by a difference in materials properties between the clad and core glasses. Specifically, the conventional thermal mismatch problems between core and clad are circumvented. A variety of fibre types can be fabricated from non-silica based (compounds) glasses, for example: single-mode fibre; photonic band gap fibre; highly non-linear fibre; fibre with photosensitivity written gratings and other refractive index profile structures; and rare-earth doped fibres (e.g. Er, Nd, Pr) to provide gain media for fibre amplifiers and lasers.

    Abstract translation: 为了克服从非二氧化硅（复合）玻璃制造常规的包芯光纤的问题，提出了制造非二氧化硅基（复合）玻璃光纤作为多孔纤维，即在包层中连续的纵向孔。 这消除了与芯和包覆复合玻璃的物理性质失配相关的常规问题，因为多孔纤维可以由单一玻璃组合物制成。 使用多孔光纤，由于芯和包层之间必需的折射率调制由包层的微结构即其孔提供，而不是通过材料性质的差异来提供用于芯和包层的不同的玻璃。 在包层和核心眼镜之间。 具体来说，芯和包层之间常规的热失配问题被规避。 各种纤维类型可以由非二氧化硅（化合物）玻璃制成，例如：单模纤维; 光子带隙光纤; 高度非线性的纤维; 具有光敏写入光栅的纤维和其他折射率分布结构; 和稀土掺杂光纤（例如Er，Nd，Pr），为光纤放大器和激光器提供增益介质。

    Active single mode optical fibres and method for their fabrication
    47.
    发明授权
    Active single mode optical fibres and method for their fabrication 失效
    主动单模光纤及其制造方法

    公开(公告)号：US5991486A

    公开(公告)日：1999-11-23

    申请号：US962371

    申请日：1997-10-31

    Applicant: Marco Braglia

    Inventor： Marco Braglia

    IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/023 ,  C03B37/027 ,  C03C3/32 ,  C03C13/04 ,  H01S3/06 ,  H01S3/10 ,  G02B6/16

    CPC classification number: C03C13/046 ,  C03B37/01211 ,  C03B37/01268 ,  C03B37/027 ,  C03C13/041 ,  C03C13/043 ,  C03B2201/06 ,  C03B2201/30 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2201/80 ,  C03B2201/82 ,  C03B2201/86 ,  C03B2203/24

    Abstract: An active single-mode optical fiber has the core made of a rare earth doped non-oxide glass and the cladding made of an oxide glass. The glass of the core has a melting temperature lower than that of the glass of the cladding and lying within the range of the softening temperatures of the latter. In a preferred embodiment the core is made of a chalcogenide glass and the cladding is made of a lead silicate glass. To produce the fiber, a preform, obtained by introducing an element made of the non-oxide glass into the hole of a capillary tube made of the oxide glass, is brought to a temperature lying within the range of softening temperatures of the oxide glass and not lower than the melting temperature of the non-oxide glass, and is drawn. The capillary tube, during the drawing process, serves as a container for the molten glass of the core.

    Abstract translation: 有源单模光纤具有由稀土掺杂的非氧化物玻璃制成的芯和由氧化物玻璃制成的包层。 芯的玻璃的熔融温度低于包层玻璃的熔化温度，并且处于软化温度的范围内。 在优选实施例中，芯由硫族化物玻璃制成，并且包层由硅酸铅玻璃制成。 为了制造纤维，通过将由非氧化物玻璃制成的元件引入到由氧化物玻璃制成的毛细管的孔中而获得的预成型体达到处于氧化物玻璃的软化温度范围内的温度， 不低于非氧化物玻璃的熔融温度，并被拉伸。 毛细管在拉伸过程中用作芯的熔融玻璃的容器。

    Multi-cylinder apparatus for making optical fibers, process and product
    48.
    发明授权
    Multi-cylinder apparatus for making optical fibers, process and product 失效
    用于制造光纤，工艺和产品的多缸装置

    公开(公告)号：US5900036A

    公开(公告)日：1999-05-04

    申请号：US708017

    申请日：1996-08-30

    Applicant: Reza Mossadegh ,  Jasbinder Sanghera ,  Ishwar Aggarwal

    Inventor： Reza Mossadegh ,  Jasbinder Sanghera ,  Ishwar Aggarwal

    IPC: C03B37/023 ,  C03B37/027 ,  C03B37/029 ,  C03B37/022

    CPC classification number: C03B37/02754 ,  C03B37/023 ,  C03B37/029 ,  C03B2201/82 ,  C03B2201/86 ,  C03B2203/24 ,  C03B2205/10 ,  C03B2205/14 ,  C03B2205/16

    Abstract: A vertically disposed apparatus used to make core-clad optical fibers inces an inner elongated cylinder removably closed at the top and provided at the bottom with an inner exit port of a smaller diameter than the inner cylinder and an outer cylinder, disposed around the inner cylinder, removably closed at the top and provided at the bottom with an outer exit port of a smaller diameter than the outer cylinder. The inner exit port is of a smaller diameter than the outer exit port and is disposed directly above the outer exit port. The apparatus also includes a heater for heating the inner and outer cylinders and acces to the inner and the outer cylinders for individually pressurizing inner and outer cylinders. The process by which the core-clad optical fibers are made includes the steps of placing a solid glass core rod into the inner cylinder of the apparatus described above, placing a solid glass cladding tube into the outer cylinder, melting the core rod and the cladding tube, quickly cooling the molten core rod and cladding tube to the drawing temperature, individually pressurizing the molten core rod and cladding tube, and drawing the core-clad optical fiber through the exit ports.

    Abstract translation: 用于制造包芯光纤的垂直设置的装置包括：内部细长圆筒，其在顶部可拆卸地封闭并且设置在底部，具有比内筒更小直径的内出口和设置在内筒周围的外筒 在顶部可拆卸地封闭，并且在底部设置有比外筒小直径的外出口。 内出口的直径比外出口小，直接位于外出口的正上方。 该装置还包括用于加热内筒和外筒的加热器，并且与内筒和外筒相接触，用于单独地加压内筒和外筒。 制造芯包覆光纤的过程包括以下步骤：将实心玻璃芯棒放置在上述设备的内筒中，将固体玻璃包层管放置在外筒中，熔化芯棒和包层 将熔芯和包层管快速冷却至拉伸温度，分别对熔芯和包层管进行加压，并通过出口拉出芯包覆光纤。

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