公开(公告)号：US09932260B2

公开(公告)日：2018-04-03

申请号：US15337591

申请日：2016-10-28

Applicant: Corning Incorporated

Inventor： Kenneth Duane Billings ,  Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Robert Clark Moore ,  Pushkar Tandon

IPC: C03B37/027 ,  C03B37/025 ,  G02B6/036 ,  C03C25/10 ,  G02B6/02

CPC classification number: C03B37/02718 ,  C03B37/0253 ,  C03B37/02727 ,  C03B37/029 ,  C03B37/032 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2201/50 ,  C03B2203/224 ,  C03B2203/24 ,  C03B2203/26 ,  C03B2205/42 ,  C03B2205/44 ,  C03B2205/55 ,  C03B2205/56 ,  C03B2205/60 ,  C03C25/106 ,  G02B6/02004 ,  G02B6/02009 ,  G02B6/0281 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03694

Abstract: According to some embodiments a method of processing an optical fiber comprises the steps of: (i) drawing the fiber at a drawing rate of at least 30 m/sec; and (ii) cooling the drawn fiber in a gas at an average cooling rate less than 5000° C./s, such that said cooling reduces the temperature of the fiber from an entering temperature in the range between 1500° C. and 1700° C. to another temperature in the range between 1200° C. and 1400° C., the gas being at a temperature between 800° C. and 1500° C.; and the thermal conductivity κ of the gas being not greater than 1.5×10−4 cal/cm-s-K for at least one temperature within a range of 800° C. to 1500° C. at one atm (atmosphere) pressure absolute.

公开(公告)号：US09840432B2

公开(公告)日：2017-12-12

申请号：US15029322

申请日：2014-10-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： David C. Jarmon

IPC: C03B19/02 ,  B28B1/24 ,  B28B3/02

CPC classification number: C03B19/025 ,  B28B1/24 ,  B28B3/025 ,  C03B19/02 ,  C03B2201/02 ,  C03B2201/10

Abstract: One exemplary embodiment of this disclosure relates to a transfer molding assembly. The assembly includes a die having a molding cavity interconnected with a reservoir. The assembly further includes a heater operable to heat the die, and a load plate configured to move under its own weight to transfer material from the reservoir into the molding cavity.

公开(公告)号：US20170341968A1

公开(公告)日：2017-11-30

申请号：US15602919

申请日：2017-05-23

Applicant: Heraeus Quarzglas GmbH & Co. KG

Inventor： Christian SCHENK ,  Gerrit SCHEICH ,  Nadine TSCHOLITSCH

IPC: C03B20/00 ,  C03B19/06

CPC classification number: C03B20/00 ,  C03B19/066 ,  C03B2201/02

Abstract: A method for producing a pore-containing opaque quartz glass includes: (a) producing porous SiO2 granulate particles from synthetically produced SiO2, (b) thermally densifying the SiO2 granulate particles to form partly densified SiO2 granulate particles, (c) forming a dispersion from the partly densified SiO2 granulate particles, (d) comminuting the partly densified SiO2 granulate particles to form a slip containing comminuted SiO2 granulate particles, (e) shaping the slip into a shaped body and forming a porous SiO2 green body with a green density rG, and (f) sintering the SiO2 green body into opaque quartz glass. To produce opaque quartz glass that is also suited for the use of spray granulate, during step (b), partly densified SiO2 granulate particles are produced with a specific surface BET-(A) between 0.025 and 2.5 m2/g, and during step (d), comminuted SiO2 granulate particles are produced with a specific surface BET-(B) between 4 and 10 m2/g.

公开(公告)号：US09366807B2

公开(公告)日：2016-06-14

申请号：US14603488

申请日：2015-01-23

Applicant: FUJIKURA LTD.

Inventor： Shoji Tanigawa ,  Katsuhiro Takenaga

IPC: G02B6/00 ,  G02B6/02 ,  G02B6/036 ,  C03B37/012 ,  C03B37/027

CPC classification number: G02B6/02042 ,  C03B37/01222 ,  C03B37/02754 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/26 ,  C03B2203/34 ,  C03B2205/14

Abstract: Provided is a method of producing a preform 10P for a coupled multi-core fiber including: an arranging process P1 for arranging a plurality of core glass bodies 11R and a clad glass body 12R in such a way that the plurality of core glass bodies 11R are surrounded by the clad glass body 12R; and a collapsing process P2 for collapsing a gap between the core glass bodies 11R and the clad glass body 12R, wherein the respective core glass bodies 11R have outer regions 16 having a predetermined thickness from the periphery surfaces and made of silica glass undoped with germanium, and the clad glass body 12R is made of silica glass having a refractive index lower than a refractive index of the outer regions of the core glass bodies 11R.

公开(公告)号：US20160090319A1

公开(公告)日：2016-03-31

申请号：US14864103

申请日：2015-09-24

Applicant: Heraeus Quarzglas GmbH & Co. KG

Inventor： Achim HOFMANN ,  Thomas KAYSER ,  Matthias OTTER ,  Bodo KÜHN

IPC: C03B19/06 ,  C03C3/06

CPC classification number: C03B19/066 ,  C03B19/108 ,  C03B19/1095 ,  C03B2201/02 ,  C03C3/06 ,  C03C11/00 ,  C03C12/00 ,  C03C2201/02

Abstract: A method for producing synthetic quartz glass by fusion of SiO2 granulate involves synthesizing amorphous SiO2 primary particles, granulating the amorphous SiO2 primary particles to form an open-pore SiO2 granulate, sintering the open-pore SiO2 granulate by heating in a sintering atmosphere at a sintering temperature and for a sintering period to form a densified SiO2 granulate, and melting the densified SiO2 granulate at a melting temperature to form the synthetic quartz glass. To provide an inexpensive production of low-bubble transparent components of quartz glass despite the use of still open-pore SiO2 granulate, the sintering atmosphere, sintering temperature and sintering duration are adjusted such that the densified SiO2 granulate still comprises open pores but manifests a material-specific infrared transmission T1700 at a wavelength of 1700 nm. This transmission is in the range of 50-95% of the infrared transmission T1700 of quartz glass granules of the same material.

Abstract translation: 通过SiO 2颗粒熔融制造合成石英玻璃的方法包括合成无定形SiO 2一次颗粒，造粒无定形SiO 2一次颗粒以形成开孔SiO 2颗粒，通过在烧结气氛中加热烧结开孔SiO 2颗粒 温度和烧结时间以形成致密化的SiO 2颗粒，并且在熔融温度下熔化致密的SiO 2颗粒以形成合成石英玻璃。 尽管使用仍然是开孔的SiO 2颗粒，为了提供石英玻璃的低气泡透明组分的廉价生产，调节烧结气氛，烧结温度和烧结持续时间，使得致密的SiO 2颗粒仍然包括开孔，但表现出一种材料 特定的红外透射T1700，波长为1700nm。 该透射率在相同材料的石英玻璃颗粒的红外透射率T1700的50-95％的范围内。

公开(公告)号：US20150331180A1

公开(公告)日：2015-11-19

申请号：US14133526

申请日：2013-12-18

Applicant: Shin-Etsu Chemical Co., Ltd.

Inventor： Hiroshi OYAMADA

IPC: G02B6/028 ,  G02B6/02 ,  G02B6/036

CPC classification number: G02B6/0283 ,  C03B37/01413 ,  C03B37/01453 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/23 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  G02B6/02019 ,  G02B6/02214 ,  G02B6/0365 ,  G02B6/03694

Abstract: An optical fiber silica glass base material comprising a core formed of silica glass doped with a positive dopant that increases a refractive index; an intermediate layer adjacent to the core and surrounding the core on a radial outside thereof; a trench layer adjacent to the intermediate layer, surrounding the intermediate layer on a radial outside thereof, and formed of silica glass doped with a negative dopant that decreases a refractive index; and a cladding layer adjacent to the trench layer, surrounding the trench layer on a radial outside thereof, and formed of silica glass. Thickness of the intermediate layer in a radial direction is greater than thickness of the trench layer, and a region of the intermediate layer nearer the core is more heavily doped with the positive dopant and/or a region of the intermediate layer nearer the trench layer is more heavily doped with the negative dopant.

Abstract translation: 一种光纤石英玻璃基材，包括由掺杂有增加折射率的正掺杂剂的石英玻璃形成的芯; 邻近所述芯并在其径向外侧围绕所述芯的中间层; 与中间层相邻的沟槽层，在中间层的径向外侧包围中间层，并由掺杂有降低折射率的负掺杂剂的石英玻璃形成; 以及与沟槽层相邻的包层，在其径向外侧包围沟槽层，并由石英玻璃形成。 中间层在径向上的厚度大于沟槽层的厚度，并且更靠近芯的中间层的区域被更多地掺杂有正掺杂剂和/或更接近沟槽层的中间层的区域 更重掺杂负极掺杂剂。

公开(公告)号：US09086524B2

公开(公告)日：2015-07-21

申请号：US13603399

申请日：2012-09-04

Applicant: Chen Yang ,  Qingrong Han ,  Weijun Tong ,  Jie Luo ,  Yongtao Liu

Inventor： Chen Yang ,  Qingrong Han ,  Weijun Tong ,  Jie Luo ,  Yongtao Liu

IPC: C03B37/018 ,  C03B37/027 ,  G02B6/028 ,  C03B37/012 ,  C03B37/014 ,  G02B6/036 ,  G02B6/02 ,  C03C13/04

CPC classification number: G02B6/0285 ,  C03B37/01211 ,  C03B37/014 ,  C03B37/0183 ,  C03B37/01892 ,  C03B37/02754 ,  C03B2201/02 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/86 ,  C03B2203/23 ,  C03B2205/09 ,  C03B2205/14 ,  C03C13/045 ,  C03C2201/12 ,  C03C2201/23 ,  C03C2201/31 ,  C03C2203/40 ,  G02B6/02395 ,  G02B6/0283 ,  G02B6/03633 ,  Y02P40/57

Abstract: A method for manufacturing an optical fiber preform, including: a) providing a lining tube as a substrate tube, and doping and depositing by a PCVD or an MCVD process; b) in the reacting gas of silicon tetrachloride and oxygen, introducing a fluorine-containing gas for fluorine doping, introducing germanium tetrachloride for germanium doping, ionizing the reacting gas in the lining tube through microwaves to form plasma, depositing the plasma on the inner wall of the lining tube in the form of glass; c) after the completion of deposition, processing the deposited lining tube into a solid core rod by melting contraction through an electric heating furnace; d) sleeving the solid core rod into a pure quartz glass jacketing tube and manufacturing the two into an optical fiber preform; and e) allowing the effective diameter d of the optical fiber preform to become between 95 and 205 mm.

Abstract translation: 一种制造光纤预制棒的方法，包括：a）提供衬管作为衬底管，并通过PCVD或MCVD工艺进行掺杂和沉积; b）在四氯化硅和氧气的反应气体中，引入用于氟掺杂的含氟气体，引入用于锗掺杂的四氯化锗，通过微波将衬里管中的反应气体离子化以形成等离子体，将等离子体沉积在内壁上 的衬里管以玻璃的形式; c）沉积完成后，通过电加热炉熔化收缩将沉积的衬管加工成固体芯棒; d）将实心芯棒套入纯石英玻璃护套管并将其制造成光纤预制棒; 以及e）允许光纤预型件的有效直径d变为95至205mm。

公开(公告)号：US20150183676A1

公开(公告)日：2015-07-02

申请号：US14412068

申请日：2013-07-02

Applicant: Heraeus Quarzglas GmbH & Co. KG

Inventor： Martin Trommer ,  Klaus-Uwe Badeke

IPC: C03B19/14

CPC classification number: C03B19/1415 ,  C03B2201/02 ,  C03B2207/36 ,  C03B2207/50 ,  C03B2207/52 ,  C03B2207/66 ,  C03B2207/70

Abstract: A method for producing quartz glass cylinders includes producing soot bodies using depositing burners to deposit SiO2 particles for mass deposition on a rotating substrate and vitrifying the soot bodies to form quartz glass cylinders. Prior to producing the soot bodies, the following steps are carried out: producing first and second test soot bodies, determining the density distribution of the first test soot body in the axial direction; vitrifying the second test soot body to generate a test quartz glass cylinder; determining the mass distribution of the test quartz glass cylinder in the axial direction; and setting the mass deposition of SiO2 particles to be deposited as a function of the axial mass distribution of the test quartz glass cylinder. As such, the mass distribution of the produced and vitrified soot bodies is improved and/or made more homogeneous relative to the axial mass distribution of the test quartz glass cylinder.

Abstract translation: 制造石英玻璃圆筒的方法包括使用沉积燃烧器生产烟灰体，以将SiO 2颗粒沉积在旋转基底上并将烟灰体玻璃化以形成石英玻璃圆筒。 在制造烟灰体之前，进行以下步骤：产生第一和第二测试烟灰体，确定第一测试烟灰体在轴向上的密度分布; 玻璃化第二测试烟灰体以产生测试石英玻璃圆筒; 确定测试石英玻璃圆筒在轴向上的质量分布; 并且根据测试石英玻璃圆筒的轴向质量分布来设置待沉积的SiO 2颗粒的质量沉积。 因此，相对于测试石英玻璃圆筒的轴向质量分布，生产的和玻璃化的烟灰体的质量分布被改善和/或变得更均匀。

公开(公告)号：US20150160410A1

公开(公告)日：2015-06-11

申请号：US14628077

申请日：2015-02-20

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Tetsuya NAKANISHI ,  Tatsuya KONISHI ,  Kazuya KUWAHARA

IPC: 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：US20140360491A1

公开(公告)日：2014-12-11

申请号：US14345233

申请日：2012-09-13

Applicant: Klaus Becker ,  Achim Hofmann ,  Michael Hünermann ,  Christian Schenk

Inventor： Klaus Becker ,  Achim Hofmann ,  Michael Hünermann ,  Christian Schenk

IPC: F24J2/05 ,  C03B19/09 ,  C03B29/02 ,  F24J2/50

CPC classification number: F24S10/40 ,  C03B19/09 ,  C03B19/095 ,  C03B29/02 ,  C03B2201/02 ,  C03B2201/04 ,  C03C3/06 ,  C03C4/08 ,  F24S20/20 ,  F24S80/52 ,  F24S2080/503 ,  Y02E10/41

Abstract: Common solar radiation receivers are equipped with a chamber for transmission of an operating gas which is directed along to an absorber for solar radiation for thermal absorption. The absorber has a dome-shaped entry window made of quartz glass, wherein the inner side facing the absorber assumes a nominal interior temperature Ti of at least 950° C. during proper use, preferably at least 1000° C., whereas the outer side facing away from the absorber is exposed to the environment and subject to risk of devitrification. The invention relates to modifying the known solar radiation receiver so that a high absorber temperature can be set and thus a high efficiency of the solar thermal heating is enabled, without increasing the risk of devitrification in the region of the outer side of the entry window.

Abstract translation: 普通的太阳辐射接收器配备有用于传输工作气体的腔室，该工作气体沿着用于吸收太阳辐射的吸收器而被引导。 吸收器具有由石英玻璃制成的圆顶形入口窗，其中面向吸收器的内侧在适当使用期间呈现至少950℃的标称内部温度Ti，优选地至少为1000℃，而外侧 面向远离吸收器暴露在环境中并且有失透的危险。 本发明涉及修改已知的太阳辐射接收器，从而可以设定高的吸收器温度，从而能够实现太阳能热加热的高效率，而不增加入口窗外侧区域的失透的风险。