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    METHOD FOR PRODUCING A CYLINDRICAL COMPONENT FROM SYNTHETIC QUARTZ GLASS CONTAINING FLUORINE
    271.
    发明申请
    METHOD FOR PRODUCING A CYLINDRICAL COMPONENT FROM SYNTHETIC QUARTZ GLASS CONTAINING FLUORINE 审中-公开
    从含有氟的合成石英玻璃制造圆柱形部件的方法

    公开(公告)号：US20150143851A1

    公开(公告)日：2015-05-28

    申请号：US14395468

    申请日：2013-04-16

    Applicant: Heraeus Quarzglas GmbH & Co. KG

    Inventor： Martin Trommer ,  Malte Schwerin ,  Steffen Zwarg

    IPC: C03B37/014 ,  C03B37/018

    CPC classification number: C03B37/01446 ,  C03B19/1453 ,  C03B37/01453 ,  C03B37/018 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/23

    Abstract: The following method steps are known for producing cylindrical components from synthetic quartz glass containing fluorine: producing a SiO2 soot body, removing hydroxyl groups from the soot body, loading the soot body with fluorine, post-chlorinating the soot body loaded with fluorine, and vitrifying the soot body to form the cylindrical component. In order to achieve distributions in particular of fluorine that are especially reproducibly homogeneous axially and radially, according to the invention it is proposed that a concentration of hydroxyl groups in the range of 1 to 300 weight ppm is set in the soot body upon the drying and an average fluorine content of at least 1500 weight ppm is set upon the loading with fluorine, and that loading with chlorine occurs during the post-chlorination, which loading results in an average chlorine content of at least 50 weight ppm in the synthetic quartz glass after the vitrification, under the further stipulation that the weight ratio of the contents of fluorine and chlorine is less than 30.

    Abstract translation: 以下的方法步骤已知用于由含氟的合成石英玻璃制造圆柱形部件：产生SiO 2烟炱体，从烟炱体中除去羟基，用氟装载烟炱体，对装有氟的烟炱体进行后氯化和玻璃化 烟炱体形成圆柱形部件。 为了实现特别是在轴向和径向上特别可重复地均匀分布的氟的分布，根据本发明，提出在干燥后在烟灰体中设定1〜300重量ppm范围内的羟基浓度， 在加载氟时，设定至少1500重量ppm的平均氟含量，并且在后氯化期间发生氯负载，该负载导致在合成石英玻璃中的平均氯含量至少为50重量ppm 玻璃化，进一步规定氟和氯含量的重量比小于30。

    Optical fiber, optical transmission system, and method of making optical fiber
    272.
    发明授权
    Optical fiber, optical transmission system, and method of making optical fiber 有权
    光纤，光传输系统及制造光纤的方法

    公开(公告)号：US08687936B2

    公开(公告)日：2014-04-01

    申请号：US13706458

    申请日：2012-12-06

    Applicant: Sumitomo Electric Industries, Ltd.

    Inventor： Tetsuya Nakanishi ,  Tatsuya Konishi ,  Kazuya Kuwahara

    IPC: G02B6/00

    CPC classification number: G02B6/028 ,  C03B37/02718 ,  C03B37/02727 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/23 ,  C03B2205/56 ,  C03C13/045 ,  C03C13/046

    Abstract: Provided is an inexpensive low-loss optical fiber suitably used in an optical transmission network. An optical fiber includes a core, an optical cladding, and a jacket. The core has a relative refractive index difference between 0.2% and 0.32% and has a refractive index volume between 9%·μm2 and 18%·μm2. The jacket has a relative refractive index difference between 0.03% and 0.20%. Glass constituting the core has a fictive temperature between 1400° C. and 1560° C. Stress remaining in the core is compressive stress. A cutoff wavelength measured on a fiber having a length of 2 m is 1300 nm or more and a cutoff wavelength measured on a fiber having a length of 100 m is 1500 nm or less. An effective area at a wavelength of 1550 nm is 110 μm2 or more. A attenuation at a wavelength of 1550 nm is 0.19 dB/km or less.

    Abstract translation: 提供了适用于光传输网络的便宜的低损耗光纤。 光纤包括芯，光学包层和外壳。 芯的相对折射率差为0.2％至0.32％，折射率体积在9％·μm2和18％·μm2之间。 护套的相对折射率差为0.03％至0.20％。 构成核心的玻璃具有1400℃至1560℃之间的假想温度。芯体中的应力是压应力。 在长度为2μm的光纤上测量的截止波长为1300nm以上，在长度为100μm的光纤上测定的截止波长为1500nm以下。 1550nm波长的有效面积为110μm2以上。 在1550nm波长处的衰减为0.19dB / km或更小。

    Synthetic silica glass with uniform fictive temperature
    274.
    发明授权
    Synthetic silica glass with uniform fictive temperature 有权
    具有均匀假想温度的合成石英玻璃

    公开(公告)号：US08596094B2

    公开(公告)日：2013-12-03

    申请号：US12902238

    申请日：2010-10-12

    Applicant: Carlos Duran ,  Kenneth Edward Hrdina ,  Ulrich Wilhelm Heinz Neukirch

    Inventor： Carlos Duran ,  Kenneth Edward Hrdina ,  Ulrich Wilhelm Heinz Neukirch

    IPC: C03B13/00 ,  C03B15/00 ,  C03B19/00 ,  C03B25/00 ,  C03C3/06

    CPC classification number: C03B25/02 ,  C03B19/1453 ,  C03B2201/07 ,  C03B2201/075 ,  C03B2201/22 ,  C03B2201/23

    Abstract: A method of making a silica glass having a uniform fictive temperature. The glass article is heated at a target fictive temperature, or heated or cooled at a rate that is less than the rate of change of the fictive temperature, for a time that is sufficient to allow the fictive temperature of the glass to come within 3° C. of the target fictive temperature. The silica glass is then cooled from the target fictive temperature to a temperature below the strain point of the glass at a cooling rate that is greater than the relaxation rate of the glass at the target fictive temperature. The silica glass has a fictive temperature that varies by less than 3° C. after the annealing step. A silica glass made by the method is also described.

    Abstract translation: 制造具有均匀的假想温度的二氧化硅玻璃的方法。 将玻璃制品在目标假想温度下加热，或以低于假想温度变化率的速率加热或冷却一段足以使玻璃的假想温度达到3°的时间 C.目标虚构温度。 然后将二氧化硅玻璃从目标假想温度冷却至低于玻璃应变点的温度，其冷却速率大于目标假想温度下玻璃的松弛率。 二氧化硅玻璃具有在退火步骤之后变化小于3℃的假想温度。 还描述了通过该方法制备的二氧化硅玻璃。

    Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method
    276.
    发明授权
    Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method 有权
    通过使用等离子体辅助沉积法从合成石英玻璃制造空白模具的方法和装置

    公开(公告)号：US08336337B2

    公开(公告)日：2012-12-25

    申请号：US10519016

    申请日：2003-07-07

    Applicant: Richard Schmidt ,  Karsten Bräuer

    Inventor： Richard Schmidt ,  Karsten Bräuer

    IPC: C03B37/018

    CPC classification number: H05H1/30 ,  C03B37/01426 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/12

    Abstract: The invention relates to a method for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method, according to which a hydrogen-free media flow containing a glass starting material and a carrier gas is fed to a multi-nozzle deposition burner. The glass starting material is introduced into a plasma zone by the deposition burner and is oxidized therein while forming SiO2 particles, and the SiO2 particles are deposited on a deposition surface while being directly vitrified. In order to increase the deposition efficiency, the invention provides that the deposition burner (1) focuses the media flow toward the plasma zone (4) by. A multi-nozzle plasma burner, which is suited for carrying out the method and which is provided with a media nozzle for feeding a media flow to the plasma zone, is characterized in that the media nozzle (7) is designed so that it is focussed toward the plasma zone (4). The focussing is effected by a tapering (6) of the media nozzle (7).

    Abstract translation: 本发明涉及一种通过使用等离子体辅助沉积方法从合成石英玻璃制造空白模具的方法，根据该方法，将含有玻璃原料和载气的无氢介质流进料到多喷嘴沉积 刻录机。 玻璃原料通过沉积燃烧器引入等离子体区域，并在其中被氧化，同时形成SiO 2颗粒，并且SiO 2颗粒沉积在沉积表面上同时被直接玻璃化。 为了提高沉积效率，本发明提供了沉积燃烧器（1）将介质流聚焦到等离子体区（4）。 适用于执行该方法并且具有用于将介质流供给到等离子体区域的介质喷嘴的多喷嘴等离子燃烧器的特征在于，介质喷嘴（7）被设计成使其聚焦 朝向等离子体区（4）。 聚焦由介质喷嘴（7）的锥形（6）实现。

    Low loss optical fiber designs for confining optical power to low-doped regions
    280.
    发明授权
    Low loss optical fiber designs for confining optical power to low-doped regions 有权
    低损耗光纤设计用于将光功率限制在低掺杂区域

    公开(公告)号：US08073301B2

    公开(公告)日：2011-12-06

    申请号：US12381302

    申请日：2009-03-10

    Applicant: Lance Gibson ,  David Peckham ,  Robert Lingle, Jr.

    Inventor： Lance Gibson ,  David Peckham ,  Robert Lingle, Jr.

    IPC: G02B6/036

    CPC classification number: G02B6/03683 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/014 ,  C03B37/018 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22

    Abstract: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    Abstract translation: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯，并且内包层具有凹陷指数，并且使用MCVD制造。 在优选实施例中，光功率包层基本上完全包含在VAD生产的芯材料中，并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

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