公开(公告)号：US20190092678A1

公开(公告)日：2019-03-28

申请号：US16189096

申请日：2018-11-13

Applicant: Corning Incorporated

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

IPC: C03B37/029 ,  C03B37/027

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.

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。

公开(公告)号：US09487428B2

公开(公告)日：2016-11-08

申请号：US14640584

申请日：2015-03-06

Applicant: OFS Fitel, LLC

Inventor： Dennis J Trevor

IPC: C03B37/012

CPC classification number: C03B37/0128 ,  C03B37/01211 ,  C03B37/01237 ,  C03B37/01257 ,  C03B37/01282 ,  C03B37/01297 ,  C03B2201/02

Abstract: The embodiments disclosed herein seek to ameliorate high costs associated with the use of ultra-pure silica by using a lower-cost starting material and purifying the lower-cost starting material to an acceptable level of purity during the preform manufacturing process. In one embodiment, a nucleating compound is coated on a thin-walled silica tube, which upon cooling, forms cristobalite allowing for easy removal of the thin-walled silica tube.

Abstract translation: 本文公开的实施方案旨在通过使用较低成本的起始材料和在预成型制造过程中将较低成本起始材料纯化至可接受的纯度来改善与使用超纯二氧化硅相关的高成本。 在一个实施方案中，将成核化合物涂覆在薄壁石英管上，其在冷却时形成方英石，允许容易地除去薄壁二氧化硅管。

公开(公告)号：US20160304388A1

公开(公告)日：2016-10-20

申请号：US15099616

申请日：2016-04-15

Applicant: Shin-Etsu Chemical Co., Ltd.

Inventor： Tetsuya OTOSAKA

IPC: C03B37/025 ,  C03B37/029 ,  C03B37/03

CPC classification number: C03B37/0142 ,  C03B37/01446 ,  C03B37/0146 ,  C03B2201/02 ,  C03B2207/52

Abstract: A porous glass base material sintering method comprising measuring a feeding speed Vf of a porous glass base material and a movement speed Vw of a bottom end of the glass base material; performing a sintering treatment of the porous glass base material presetting, for each feeding distance L of the porous glass base material, a greater-than-1 target value αS (L) of an elongation rate in a straight body portion of the porous glass base material calculated based on a ratio Vw/Vf, and controlling at least one of a temperature of the heating furnace and a feeding speed of the porous glass base material such that a measured value α of the elongation rate of the porous glass base material matches with the target value αS (L).

Abstract translation: 一种多孔玻璃基材烧结方法，包括测量多孔玻璃基材的进料速度Vf和玻璃基材的底端的移动速度Vw; 对于多孔玻璃基材的每个进给距离L，对多孔玻璃基材进行预浸的烧结处理，在多孔玻璃基材的直体部分中的伸长率大于1的目标值αS（L） 基于比率Vw / Vf计算的材料，并且控制加热炉的温度和多孔玻璃基材的进料速度中的至少一个，使得多孔玻璃基材的延伸率的测量值α与 目标值αS（L）。

公开(公告)号：US09409810B2

公开(公告)日：2016-08-09

申请号：US14390991

申请日：2013-03-20

Applicant: Heraeus Quarzglas GmbH & Co KG

Inventor： Walter Lehmann ,  Thomas Kayser

IPC: C03B20/00 ,  C03B19/09 ,  C03B19/10 ,  C03C23/00

CPC classification number: C03B20/00 ,  C03B19/095 ,  C03B19/1005 ,  C03B19/107 ,  C03B19/1095 ,  C03B2201/02 ,  C03B2201/03 ,  C03C23/0075

Abstract: The production of quartz glass granules comprises the granulation of pyrogenically produced silicic acid and the formation of a SiO2 granulate (9), the drying and cleaning of the SiO2 granulate (9) by heating in an atmosphere containing halogen, and the vitrification of the SiO2 granulate (9) under a treatment gas which contains at least 30% by volume of helium and/or hydrogen. This process is time-consuming and expensive. In order to provide a method which, starting from a porous SiO2 granulate (9), allows the cost-effective production of dense, synthetic quartz glass granules suitable for melting bubble-free components of quartz glass, the invention proposes that the cleaning and vitrification of the SiO2 granulate (9) and a post-treatment of the vitrified quartz glass granules are carried out in each case in a rotary tube (6) of a rotary kiln (1), said rotary tube rotating about a central axis (7), wherein the rotary tube (6) comprises an inner wall made of a ceramic material during vitrification, and wherein the vitrified quartz glass granules are subjected to a post-treatment during a treatment period of at least 10 minutes in an atmosphere which contains less than 20% of helium or hydrogen at a treatment temperature of 300° C. or more.

Abstract translation: 石英玻璃颗粒的生产包括热解产生的硅酸的成粒和SiO 2颗粒的形成（9），通过在含卤素的气氛中加热来干燥和清洁SiO 2颗粒（9），并且SiO 2的玻璃化 颗粒（9）在含有至少30体积％的氦和/或氢气的处理气体下。 这个过程是耗时且昂贵的。 为了提供从多孔SiO 2颗粒（9）开始的方法，可以成本有效地生产适合于熔化石英玻璃的无气泡组分的致密合成石英玻璃颗粒，本发明提出了清洁和玻璃化 的二氧化硅颗粒（9）的后处理和玻璃化的石英玻璃颗粒的后处理在每种情况下在旋转窑（1）的旋转管（6）中进行，所述旋转管围绕中心轴线（7）旋转， 其中旋转管（6）在玻璃化期间包括由陶瓷材料制成的内壁，并且其中所述玻璃化石英玻璃颗粒在至少10分钟的处理期间在包含小于 在300℃或更高的处理温度下，20％的氦气或氢气。

公开(公告)号：US20160070058A1

公开(公告)日：2016-03-10

申请号：US14945570

申请日：2015-11-19

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Tetsuya NAKANISHI ,  Tetsuya HAYASHI ,  Takashi SASAKI ,  Eisuke SASAOKA

IPC: G02B6/02 ,  G02B6/38

CPC classification number: G02B6/02042 ,  C03B37/01222 ,  C03B37/027 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/04 ,  C03B2203/12 ,  C03B2203/34 ,  G02B6/02395 ,  G02B6/3652 ,  G02B6/3803 ,  G02B6/3838 ,  G02B6/3851

Abstract: The present invention relates to an MCF with a structure for enabling an alignment work with higher accuracy. The MCF has a plurality of cores and a cladding. An outer peripheral shape of the cladding in a cross section of the MCF is comprised of a circumferential portion forming a circumference coincident with an outer periphery of the MCF, and a cut portion. The cut portion has a bottom portion and two contact portions provided on both sides of the bottom portion and projecting more than the bottom portion. When a side face of the MCF is viewed, the two contact portions have flattened faces and the flattened faces of the two contact portions extend along a longitudinal direction of the MCF with the bottom portion in between.

Abstract translation: 本发明涉及具有能够以更高精度实现对准工作的结构的MCF。 MCF具有多个芯和包层。 MCF的横截面中的包层的外周形状包括形成与MCF的外周一致的圆周的周缘部和切断部。 切割部分具有底部和设置在底部两侧的两个接触部分，并且比底部部分突出。 当观察MCF的侧面时，两个接触部分具有平坦的表面，并且两个接触部分的平坦表面沿着MCF的纵向方向延伸，底部部分在其间。

公开(公告)号：US09181121B2

公开(公告)日：2015-11-10

申请号：US14297314

申请日：2014-06-05

Applicant: SUMCO CORPORATION

Inventor： Toshiaki Sudo ,  Eriko Suzuki

IPC: C03B19/09 ,  G01J5/60 ,  G01J5/00 ,  G01J5/08

CPC classification number: C03B19/095 ,  C03B2201/02 ,  G01J5/0022 ,  G01J5/0037 ,  G01J5/0862 ,  Y02P40/57

Abstract: Accurate temperature measurement during manufacturing a vitreous silica crucible is enabled. The present invention provides an apparatus for manufacturing a vitreous silica crucible including: a mold for forming a silica powder layer by supplying silica powder therein; an are discharge unit having carbon electrodes and a power supply unit and for heating and fusing the silica powder layer by arc discharge; and a temperature measurement unit for measuring temperature of a fused portion in the mold, wherein the temperature measurement unit is an radiation thermometer for measuring temperature by detecting radiation energy of a wavelength of 4.8 to 5.2 μm.

Abstract translation: 在制造玻璃状石英坩埚期间能够进行精确的温度测量。 本发明提供一种二氧化硅玻璃坩埚的制造装置，其特征在于，包括：通过在其中供给二氧化硅粉末而形成二氧化硅粉末层的模具; a是具有碳电极和电源单元的放电单元，用于通过电弧放电来加热和熔融二氧化硅粉末层; 以及用于测量模具中的熔融部分的温度的温度测量单元，其中温度测量单元是通过检测4.8至5.2μm的波长的辐射能量来测量温度的辐射温度计。

公开(公告)号：US09128236B2

公开(公告)日：2015-09-08

申请号：US14628077

申请日：2015-02-20

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Tetsuya Nakanishi ,  Tatsuya Konishi ,  Kazuya Kuwahara

IPC: G02B6/02 ,  G02B6/036

CPC classification number: G02B6/036 ,  C03B37/027 ,  C03B37/02718 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  G02B6/02395 ,  G02B6/03694

Abstract: An inexpensive low-attenuation optical fiber 1 suitable for use as an optical transmission line in an optical access network is a silica based glass optical fiber and includes a core 11 including the center axis, an optical cladding 12 surrounding the core, and a jacket 13 surrounding the optical cladding. The core contains GeO2 and has a relative refractive index difference Δcore, based on the optical cladding, greater than or equal to 0.35% and less than or equal to 0.50% and has a refractive index volume v greater than or equal to 0.045 μm2 and less than or equal to 0.095 μm2. The jacket has a relative refractive index difference ΔJ greater than or equal to 0.03% and less than or equal to 0.20%. Glass constituting the core has a fictive temperature higher than or equal to 1400° C. and lower than or equal to 1590° C. Residual stress in the core is compressive stress that has an absolute value greater than or equal to 5 MPa.

Abstract translation: 适合用作光接入网络中的光传输线的便宜的低衰减光纤1是二氧化硅基玻璃光纤，并且包括包括中心轴的芯11，围绕芯的光学包层12和外壳13 围绕光学包层。 芯包含GeO 2，并且具有基于光学包层的相对折射率差＆Dgr芯，大于或等于0.35％且小于或等于0.50％，并且具有大于或等于0.045μm2的折射率体积v 小于或等于0.095μm2。 护套的相对折射率差Dgr; J大于或等于0.03％且小于或等于0.20％。 构成芯的玻璃具有高于或等于1400℃且低于或等于1590℃的假想温度。芯中的残余应力是绝对值大于或等于5MPa的压应力。

公开(公告)号：US08989545B2

公开(公告)日：2015-03-24

申请号：US14111028

申请日：2012-10-25

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Tetsuya Nakanishi ,  Tatsuya Konishi ,  Kazuya Kuwahara

IPC: G02B6/02 ,  C03B37/027 ,  G02B6/036

CPC classification number: G02B6/036 ,  C03B37/027 ,  C03B37/02718 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  G02B6/02395 ,  G02B6/03694

Abstract: An inexpensive low-attenuation optical fiber 1 suitable for use as an optical transmission line in an optical access network is a silica based glass optical fiber and includes a core 11 including the center axis, an optical cladding 12 surrounding the core, and a jacket 13 surrounding the optical cladding. The core contains GeO2 and has a relative refractive index difference Δcore, based on the optical cladding, greater than or equal to 0.35% and less than or equal to 0.50% and has a refractive index volume v greater than or equal to 0.045 μm2 and less than or equal to 0.095 μm2. The jacket has a relative refractive index difference ΔJ greater than or equal to 0.03% and less than or equal to 0.20%. Glass constituting the core has a fictive temperature higher than or equal to 1400° C. and lower than or equal to 1590° C. Residual stress in the core is compressive stress that has an absolute value greater than or equal to 5 MPa.

Abstract translation: 适合用作光接入网络中的光传输线的便宜的低衰减光纤1是二氧化硅基玻璃光纤，并且包括包括中心轴的芯11，围绕芯的光学包层12和外壳13 围绕光学包层。 芯包含GeO 2，并且具有基于光学包层的相对折射率差＆Dgr芯，大于或等于0.35％且小于或等于0.50％，并且具有大于或等于0.045μm2的折射率体积v 小于或等于0.095μm2。 护套的相对折射率差Dgr; J大于或等于0.03％且小于或等于0.20％。 构成芯的玻璃具有高于或等于1400℃且低于或等于1590℃的假想温度。芯中的残余应力是绝对值大于或等于5MPa的压应力。

公开(公告)号：US08798423B2

公开(公告)日：2014-08-05

申请号：US13481150

申请日：2012-05-25

Applicant: Pierre Sillard ,  Marianne Bigot-Astruc

Inventor： Pierre Sillard ,  Marianne Bigot-Astruc

IPC: G02B6/36 ,  C03B37/025 ,  G02B6/036 ,  C03B37/012

CPC classification number: G02B6/0365 ,  C03B37/01211 ,  C03B37/01413 ,  C03B37/01807 ,  C03B37/01861 ,  C03B2201/02 ,  C03B2201/12 ,  G02B6/03605 ,  G02B6/03627 ,  G02B6/03666

Abstract: A single-mode optical fiber includes a central core surrounded by an outer cladding. The optical fiber includes at least first and second depressed claddings positioned between the central core and the outer cladding. The central core typically has a radius of between about 3.5 microns and 5.5 microns and a refractive-index difference with the outer cladding of between about −1×10−3 and 3×10−3. The first depressed cladding typically has an outer radius of between about 9 microns and 15 microns and a refractive-index difference with the outer cladding of between about −5.5×10−3 and −2.5×10−3. The second depressed cladding typically has an outer radius of between about 38 microns and 42 microns and a refractive-index difference with the first depressed cladding of between about −0.5×10−3 and 0.5×10−3.

Abstract translation: 单模光纤包括由外包层包围的中心芯。 光纤包括位于中心芯和外包层之间的至少第一和第二凹陷包层。 中心芯通常具有在约3.5微米至5.5微米之间的半径，并且与外包层的折射率差在约-1×10-3至3×10-3之间。 第一凹陷包层通常具有在约9微米至15微米之间的外半径，并且与外包层的折射率差在约-5.5×10-3和-2.5×10-3之间。 第二凹陷包层通常具有介于约38微米和42微米之间的外半径，并且与第一凹陷包层的折射率差在约-0.5×10-3和0.5×10-3之间。