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    Apparatus for making optical fibers from core and cladding glass rods with two coaxial molten glass flows
    132.
    发明授权
    Apparatus for making optical fibers from core and cladding glass rods with two coaxial molten glass flows 有权
    用于从具有两个同轴熔融玻璃流的芯和包层玻璃棒制造光纤的装置

    公开(公告)号：US6021649A

    公开(公告)日：2000-02-08

    申请号：US256231

    申请日：1999-02-24

    Applicant: Jasbinder S. Sanghera ,  Pablo Pureza ,  Ishwar D. Aggarwal ,  Reza Mossadegh

    Inventor： Jasbinder S. Sanghera ,  Pablo Pureza ,  Ishwar D. Aggarwal ,  Reza Mossadegh

    IPC: C03B37/023

    CPC classification number: C03B37/023 ,  C03B2201/86

    Abstract: A core/clad glass optical fiber is made by melting a core glass rod and a adding glass rod in separate crucibles which are not concentric with respect to each other and the respective core and cladding glass melts passed out of contact with each other to a glass melt contacting zone proximate a fiber drawing orifice in which the cladding glass surrounds the core glass and a core/clad glass fiber is drawn. This process enables the clad glass fiber to be drawn directly from core and cladding glass rods without the need for a preform or forming a melt from glass chards or chunks, thereby reducing the cost of producing the fiber and also producing a glass clad optical fiber of high purity and excellent concentricity. Chalcogenide glass fibers having a concentricity of 100% have been made.

    Abstract translation: 芯/包覆玻璃光纤通过将核心玻璃棒和包层玻璃棒熔化在彼此不同心的单独的坩埚中，并且相应的芯和包层玻璃熔体彼此接触而熔化成玻璃 靠近纤维拉伸孔的熔融接触区，其中包层玻璃围绕芯玻璃并且芯/包层玻璃纤维被拉伸。 该方法能够使包层玻璃纤维从芯和包层玻璃棒直接拉制，而不需要预成型件或从玻璃切块或块形成熔体，从而降低生产纤维的成本，并且还生产玻璃包覆光纤 纯度高，同心度极佳。 已经制造了同心度为100％的硫族化物玻璃纤维。

    Process for removing hydrogen and carbon impurities from glasses by adding a tellurium halide
    133.
    发明授权
    Process for removing hydrogen and carbon impurities from glasses by adding a tellurium halide 失效
    通过加入卤化碲从玻璃中除去氢和碳杂质的方法

    公开(公告)号：US5779757A

    公开(公告)日：1998-07-14

    申请号：US670910

    申请日：1996-06-26

    Applicant: Jasbinder S. Sanghera ,  Vinh Q. Nguyen ,  Ishwar D. Aggarwal

    Inventor： Jasbinder S. Sanghera ,  Vinh Q. Nguyen ,  Ishwar D. Aggarwal

    IPC: C03B5/225 ,  C03B37/012 ,  C03C1/00 ,  C03C3/32 ,  C03B5/00

    CPC classification number: C03B37/01265 ,  C03B37/01268 ,  C03B5/225 ,  C03B5/2252 ,  C03C1/00 ,  C03C1/004 ,  C03C3/321 ,  C03C3/323 ,  C03B2201/86 ,  C03B2201/88 ,  Y10S65/15

    Abstract: Hydrogen and/or carbon impurities are removed from chalcogenide or chalcoide glasses by the addition of a halide, such as TeCl.sub.4, to the batch composition. During melting of the batch composition, the metal halide reacts with the hydrogen and/or carbon impurities to form a hydrogen halide and/or carbon tetrahalide gas and a metal which becomes incorporated into the chalcogen-based glass. Useful halides include halides of sulfur, selenium, tellurium, polonium, or halides of a metal (such as aluminum, magnesium, zirconium, or a mixture thereof) that forms a stable oxide. Mixed metal halides may also be used. The glass melt is then distilled, outgassed, homogenized, fined, and annealed. An apparatus specially designed for making a fiber preform by the above process is also described. An annealed preform made by this method may be drawn into a low-loss fiber in the 2 .mu.m to 12 .mu.m range.

    Abstract translation: 氢和/或碳杂质通过向批料组合物中加入卤化物如TeCl 4从硫族化物或卤代卤素玻璃中除去。 在批量组合物熔化期间，金属卤化物与氢和/或碳杂质反应形成卤化氢和/或四卤化碳气体，以及掺入硫属元素玻璃中的金属。 有用的卤化物包括形成稳定氧化物的金属（例如铝，镁，锆或其混合物）的硫，硒，碲，onium或卤化物的卤化物。 也可以使用混合金属卤化物。 然后将玻璃熔体蒸馏，除气，均化，精制和退火。 还描述了通过上述方法专门设计用于制造纤维预制件的装置。 通过该方法制备的退火预制件可以被拉制成2μm至12μm范围内的低损耗纤维。

    Method of making optical fiber with low melting glass core
    134.
    发明授权
    Method of making optical fiber with low melting glass core 失效
    低熔点玻璃芯制作光纤的方法

    公开(公告)号：US5609665A

    公开(公告)日：1997-03-11

    申请号：US521934

    申请日：1995-08-31

    Applicant: Allan J. Bruce ,  David J. DiGiovanni

    Inventor： Allan J. Bruce ,  David J. DiGiovanni

    IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03C13/04

    CPC classification number: C03B37/0124 ,  C03B37/01245 ,  C03B37/01274 ,  C03B2201/02 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/50 ,  C03B2201/86

    Abstract: The disclosed method of making a mixed glass optical fiber exemplarily comprises providing a high-silica tube, and causing molten non-high silica glass to flow into the bore of the tube by application of a pressure differential. In order to prevent cracking, the tube desirably has an outer diameter/inner diameter ratio of at least 5, preferably about 10 or even more, and an inner diameter of at most 1 min. In a preferred embodiment, a conventional SiO.sub.2 tube is partially collapsed to an inner diameter less than 1 mm, a quantity of a non-high-silica glass is placed in a neck of the partially collapsed tube and heated such that molten glass communicates with the reduced-diameter portion of the bore and can be drawn into the reduced-diameter portion by means of a vacuum. The resulting mixed glass body is then further stretched to result in a core rod of core diameter at most 0.3 min. After overcladding the core rod with SiO.sub.2, fiber is drawn from the thus produced preform. A thus produced fiber with SiO.sub.2 cladding and SiO.sub.2 -Al.sub.2 O.sub.3 -La.sub.2 O.sub.3 -Er.sub.2 O.sub.3 core was used as an optical fiber amplifier and provided high gain.

    Abstract translation: 公开的制造混合玻璃光纤的方法示例性地包括提供高硅胶管，并且使熔融的非高硅石玻璃通过施加压差而流入管的孔中。 为了防止开裂，管理想地具有至少5，优选约10甚至更​​大，内径至多1分钟的外径/内径比。 在一个优选实施例中，常规的SiO 2管部分地塌陷到小于1mm的内径，将非高硅石玻璃的量放置在部分塌缩的管的颈部中并加热使得熔融玻璃与 孔的缩径部分并且可以通过真空被拉入缩径部分。 然后将得到的混合玻璃体进一步拉伸，得到芯直径至多0.3分钟的芯棒。 在用SiO 2包覆芯棒之后，从如此制备的预制件中拉出纤维。 将由此制得的具有SiO 2包层的纤维和SiO 2 -Al 2 O 3 -Sa 2 O 3 -Er 2 O 3核心用作光纤放大器并提供高增益。

    Method of preparing electrically and optically active vitreous and polycrystalline materials
    136.
    发明授权
    Method of preparing electrically and optically active vitreous and polycrystalline materials 失效
    制备电动和光学活性维生素和多晶材料的方法

    公开(公告)号：US3689242A

    公开(公告)日：1972-09-05

    申请号：US3689242D

    申请日：1970-02-16

    Applicant: MASSACHUSETTS INST TECHNOLOGY

    Inventor： PLATAKIS NICOLAOS S ,  GATOS HARRY C ,  WITT AUGUST F

    IPC: C03B5/033 ,  C03B19/02 ,  C03B19/04 ,  C03B19/09 ,  H01L45/00 ,  H01S3/17 ,  C03B29/00 ,  C03B5/16

    CPC classification number: H01S3/17 ,  C03B5/0338 ,  C03B19/02 ,  C03B19/04 ,  C03B19/095 ,  C03B2201/86

    Abstract: A METHOD IS DISCLOSED FOR PREPARING AN ELECTRICALLY AND OPTICALLY ACTIVE MATERIAL, EITHER VITEOUS OR POLYCRYSTALLINE, THAT PROVIDES A MATERIAL THAT IS NON-POROUS, CONTAINS NO INCLUSIONS, IS CHEMICALLY HOMOGENEOUS, AND ONE THAT CAN BE CUT OR OTHERWISE FORMED TO SOME DESIRED UNIFORM GEOMETRICAL SHAPE. THE PROCESS DISCLOSED INCLUDES SUBJECTING THE COMPONENTS OF THE MATERIAL HELD WITHIN A SEALED AMPOULE OR OTHER CLOSED CONTAINER TO AN ELEVATED TEMPERATURE IN AN INERT ATMOSPHERE OR VACUUM FOR A TIME PERIOD LONG ENOUGH FOR THE COMPONENTS TO BECOME MOLTEN AND TO REACT CHEMICALLY WITH ONE ANOTHER. HEATO IS THEN WITHDRAWN FORM THE MOLTEN MATERIAL TO LOWER THE TEMPERATURE TO A VALUE AT WHICH A THIN LAYER OF MOLTEN MATERIALS ADHERES TO THE INNER SURFACE OF THE CONTAINER. RELATIVE MOVEMENT IS EFFECTED BETWEEN THE BULK OF THE MOLTEN MATERIAL AND THE THIN LAYER OF MELT THAT ADHERED TO THE INNER SURFACE, THE THIN LAYER BEING MOVED AWAY FROM THE BULK OF THE MELT TO ALLOW SOLIDICICATION THEREBY TO FORM A SOLIDIFIED LAYER. THE SOLIDIFIED LAYER IS ALTERNATELY BROUGHT INTO CONTACT WITH THE BULK OF THE MOLTEN MATERIAL TO PICK UP A THIN LAYER OF MELT AND REMOVED FROM SUCH CONTACT TO ALLOW THE THIN LAYER TO SOLIDIFY, THERE BEING A CONTINUED WITHDRAWAL OF HEAT FROM THE REGION OCCUPIED BY THE AMPOULE IN ORDER THAT THE SOLID LAYER WILL INCREASE IN THICKNESS LAYER UPON LAYER AS ADDITIONAL MOLTEN MATERIAL SOLIFIFIES.

    GLASS PRODUCTION METHOD
    139.
    发明公开
    GLASS PRODUCTION METHOD 审中-公开

    公开(公告)号：US20230373839A1

    公开(公告)日：2023-11-23

    申请号：US18031079

    申请日：2021-10-04

    Applicant: NIPPON ELECTRIC GLASS CO., LTD.

    Inventor： Kazuto NAKATSUKA ,  Tsubasa KAGAI ,  Nobutoshi ITO

    IPC: C03B5/02 ,  C03B5/185 ,  C03B7/01

    CPC classification number: C03B5/021 ,  C03B5/185 ,  C03B7/01 ,  C03B2201/86

    Abstract: Provided is a glass manufacturing method in which temperature can be easily increased and decreased at a high speed and in which the productivity can be improved. A glass manufacturing method according to an embodiment of the present invention includes the steps of: making a melt 11 by melting a raw material disposed in a container 1; obtaining a glass by cooling the melt 11, in which the raw material contains a metal, and in the step of making the melt 11 from the raw material, the raw material is induction-heated.

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