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    METHOD FOR MANUFACTURING LOW LOSS OPTICAL FIBERS
    103.
    发明公开
    METHOD FOR MANUFACTURING LOW LOSS OPTICAL FIBERS 审中-公开

    公开(公告)号：US20230168428A1

    公开(公告)日：2023-06-01

    申请号：US17989988

    申请日：2022-11-18

    Applicant: CORNING INCORPORATED

    Inventor： Rostislav Radiyevich Khrapko ,  Hazel Benton Matthews, III ,  Pushkar Tandon

    IPC: G02B6/02 ,  G02B6/028 ,  C03B37/012

    CPC classification number: G02B6/02123 ,  G02B6/0286 ,  C03B37/0122 ,  C03B37/01217 ,  C03B2201/12 ,  C03B2201/06

    Abstract: An optical fiber includes a core region of silica glass doped with an alkali metal oxide. A depressed-index cladding region surrounds the core region and comprises silica glass doped with a first concentration of fluorine. The depressed-index cladding region has a minimum relative refractive index Δ3min in a range from −0.80% to −0.30%. An outer cladding region comprises silica glass doped with a second, lesser concentration. The outer cladding region has a relative refractive index Δ4, where Δ4−Δ3min>0.05%. The optical fiber has a time-to-peak hydrogen aging value at 23° C. of less than 100 hours upon exposure to an atmosphere having a total pressure of 1 atm and containing a partial pressure of 0.01 atm H2 and a partial pressure of 0.99 atm N2. The optical fiber exhibits an attenuation

    OPTICAL FIBER WITH LOW FICTIVE TEMPERATURE
    106.
    发明申请
    OPTICAL FIBER WITH LOW FICTIVE TEMPERATURE 审中-公开
    光纤温度低的光纤

    公开(公告)号：US20170073265A1

    公开(公告)日：2017-03-16

    申请号：US15248060

    申请日：2016-08-26

    Applicant: Corning Incorporated

    Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Bruce Warren Reding ,  Pushkar Tandon

    IPC: C03B37/029

    CPC classification number: C03B37/029 ,  C03B37/02727 ,  C03B2201/02 ,  C03B2201/06 ,  C03B2205/55 ,  C03B2205/56

    Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.

    Abstract translation: 提供具有低虚拟温度的光纤以及用于制造光纤的系统和方法。 该系统包括一个再加热阶段，该加热阶段通过将玻璃结构松弛和/或将玻璃推向更接近平衡的状态，将纤维沿着加工路径加热至足以降低纤维的假想温度的温度。 将纤维从预成型件中拉出，沿着工艺路径输送，冷却并随后再加热，以增加纤维暴露于有助于降低纤维的假想温度的温度。 工艺路径可以包括多个再加热阶段以及一个或多个纤维转向装置。

    MICROSTRUCTURED MATERIALS
    107.
    发明申请
    MICROSTRUCTURED MATERIALS 审中-公开
    微结构材料

    公开(公告)号：US20160281267A1

    公开(公告)日：2016-09-29

    申请号：US15081048

    申请日：2016-03-25

    Applicant: U.S. Army Research Laboratory ATT: RDRL-LOC-1

    Inventor： ERIC D. WETZEL ,  Larry R. Holmes, JR. ,  Ricardo X. Rodriguez ,  Patrick M. Toal, JR.

    IPC: D01F8/10 ,  D01F8/18 ,  C03B37/023 ,  D01F8/14

    CPC classification number: D01F8/00 ,  B29C64/106 ,  B33Y70/00 ,  C03B19/00 ,  C03B37/027 ,  C03B37/028 ,  C03B2201/06 ,  C03B2201/32 ,  C03B2201/70 ,  C03B2201/86 ,  D01D5/30 ,  D10B2321/08 ,  D10B2321/10 ,  D10B2331/04 ,  G02B6/00 ,  G02B6/02314

    Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.

    Abstract translation: 描述了包括具有规则几何排列的不同流动温度的多种聚合物的热塑性长丝和用于制造这种丝的方法。 由于流动温度的差异，存在一种聚合物机械稳定而另一种是可流动的温度范围。 该性质对于制备用于三维印刷部件的热塑性单丝原料非常有用，其中机械稳定的聚合物具有几何稳定性，而可流动的聚合物可以填充间隙并在沉积的材料线和层之间提供牢固的结合和均化。 这些多材料丝可以通过热塑性预成型件的热拉伸制造，其本身可以是三维印刷的。 此外，可以精确地控制和复杂的几何形状来印刷预成型件，从而能够产生具有独特装饰或功能特性的单丝和纤维。

    APPARATUS AND METHOD FOR MANUFACTURING GLASS PREFORM
    110.
    发明申请
    APPARATUS AND METHOD FOR MANUFACTURING GLASS PREFORM 审中-公开
    用于制造玻璃预制件的装置和方法

    公开(公告)号：US20150052952A1

    公开(公告)日：2015-02-26

    申请号：US14521617

    申请日：2014-10-23

    Applicant: FUJIKURA LTD.

    Inventor： Takayuki KITAMURA

    IPC: C03B37/014

    CPC classification number: C03B37/01413 ,  C03B37/01807 ,  C03B37/01815 ,  C03B2201/06 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2207/80 ,  C03B2207/90

    Abstract: An apparatus for manufacturing a glass perform, includes: a dummy tube section, a reservoir portion, and a cooling portion; and a glass tube section in which particles of an alkali metal compound or an alkaline earth metal compound which have flowed into the glass tube section from the dummy tube section are heated by a second heat source which performs traverse, and oxides of the particles being deposited on an inner wall and dispersed in the glass tube section. In the cooling portion of the dummy tube section, vapor of the alkali metal compound or the alkaline earth metal compound generated by heating of a first heat source is cooled and condensed by a dry gas flowing into the dummy tube section, and thereby the particles are generated.

    Abstract translation: 一种玻璃制造装置，包括：虚拟管部，储存部和冷却部; 以及玻璃管部分，其中由虚拟管部分流入玻璃管部分的碱金属化合物或碱土金属化合物的颗粒被进行横越的第二热源加热，并且沉积的颗粒的氧化物 在内壁上分散在玻璃管部分。 在虚拟管部的冷却部中，通过第一热源的加热而产生的碱金属化合物或碱土金属化合物的蒸气被流入虚拟管部的干燥气体冷却并冷凝， 生成。

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