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    Method of manufacturing optical fiber base material
    171.
    发明授权
    Method of manufacturing optical fiber base material 有权
    制造光纤基材的方法

    公开(公告)号：US08820121B2

    公开(公告)日：2014-09-02

    申请号：US13042352

    申请日：2011-03-07

    Applicant: Tetsuya Otosaka

    Inventor： Tetsuya Otosaka

    IPC: C03B37/018 ,  C03B37/014 ,  C03B37/012

    CPC classification number: C03B37/01446 ,  C03B37/01237 ,  C03B37/0124 ,  C03B37/01426 ,  C03B37/0146 ,  C03B37/01466 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/24 ,  C03B2203/26 ,  C03B2207/50

    Abstract: Provided is a method of manufacturing an optical fiber base material having at least four layer including a core, a first cladding, a second cladding containing fluorine, and a third cladding. The manufacturing method comprises preparing a starting base material that includes the core and the first cladding; forming a porous intermediate glass base material by supplying glass raw material and oxygen to a high-frequency induction thermal plasma torch to synthesize glass fine particles that are then deposited on a surface of the starting base material; forming an intermediate glass base material that includes the core, the first cladding, and the second cladding containing fluorine, by heating and vitrifying the porous intermediate glass base material in an atmosphere containing fluorine; and providing the third cladding on the outer surface of the intermediate glass base material.

    Abstract translation: 提供一种制造具有至少四层的光纤基材的方法，该层包括芯，第一包层，含氟的第二包层和第三包层。 制造方法包括制备包括芯和第一包层的起始基材; 通过向高频感应热等离子体焰炬提供玻璃原料和氧气来合成玻璃微粒，形成多孔中间玻璃基材，然后沉积在起始基材的表面上; 通过在含氟气氛中加热和玻璃化多孔中间玻璃基材，形成包含芯，第一包层和含氟的第二包层的中间玻璃基材; 以及在中间玻璃基材的外表面上设置第三包层。

    NIOBIUM DOPED SILICA TITANIA GLASS AND METHOD OF PREPARATION
    173.
    发明申请
    NIOBIUM DOPED SILICA TITANIA GLASS AND METHOD OF PREPARATION 有权
    铌酸钡硅酸盐玻璃及其制备方法

    公开(公告)号：US20140066286A1

    公开(公告)日：2014-03-06

    申请号：US13973428

    申请日：2013-08-22

    Applicant: CORNING INCORPORATED

    Inventor： Sezhian Annamalai ,  Steven Bruce Dawes ,  Kenneth Edward Hrdina

    IPC: C03C3/097 ,  C03B19/12 ,  C03C3/06

    CPC classification number: C03C3/097 ,  C03B19/12 ,  C03B2201/075 ,  C03B2201/23 ,  C03B2201/40 ,  C03B2201/42 ,  C03C3/06 ,  C03C3/076 ,  C03C3/095 ,  C03C4/0085 ,  C03C2201/23 ,  C03C2201/40 ,  C03C2201/42 ,  C03C2203/34 ,  C03C2203/42 ,  C03C2203/50

    Abstract: This disclosure is directed to a silica-titania-niobia glass and to a method for making the glass. The composition of the silica-titania-niobia (SiO2—TiO2—Nb2O5) glass, determined as the oxides, is Nb2O5 in an amount in the range of 0.005 wt. % to 1.2 wt. %, TiO2 in an amount in the range of 5 wt. % to 10 wt. %, and the remainder of glass is SiO2. In the method, the STN glass precursor is consolidated into a glass by heating to a temperature of 1600° C. to 1700° C. in flowing helium for 6 hours to 10 hours. When this temperature is reached, the helium flow can be replaced by argon for the remainder of the time. Subsequently the glass is cooled to approximately 1050° C., and then from 1050° C. to 700° C. followed by turning off the furnace and cooling the glass to room temperature at the natural cooling rate of the furnace.

    Abstract translation: 本公开涉及二氧化硅 - 二氧化钛 - 铌玻璃和制造该玻璃的方法。 作为氧化物测定的二氧化硅 - 二氧化钛 - 氧化铌（SiO2-TiO2-Nb2O5）玻璃的组成为Nb2O5，其量为0.005重量％ ％〜1.2重量％ ％，TiO 2的量为5wt。 ％〜10重量％ ％，玻璃的其余部分为SiO2。 在该方法中，通过在流动氦中加热至1600℃至1700℃的温度6小时至10小时，将STN玻璃前体固结成玻璃。 当达到这个温度时，氦气流可以在一段时间内用氩气代替。 随后将玻璃冷却至约1050℃，然后冷却至1050℃至700℃，随后关闭炉，并以炉的自然冷却速率将玻璃冷却至室温。

    Quartz glass tube as a semifinished product for preform and fiber manufacture, and method for making the quartz glass tube
    174.
    发明授权
    Quartz glass tube as a semifinished product for preform and fiber manufacture, and method for making the quartz glass tube 有权
    石英玻璃管作为预制件和纤维制造的半成品，以及制造石英玻璃管的方法

    公开(公告)号：US08544299B2

    公开(公告)日：2013-10-01

    申请号：US12448998

    申请日：2008-01-15

    Applicant: Gerhard Schoetz ,  Karsten Braeuer ,  Jan Vydra

    Inventor： Gerhard Schoetz ,  Karsten Braeuer ,  Jan Vydra

    IPC: C03B37/018

    CPC classification number: C03B37/01426 ,  C03B37/01211 ,  C03B37/01466 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/23 ,  C03B2203/42 ,  C03C3/06

    Abstract: To improve a known method for making a quartz glass tube as a semifinished product for the manufacture of optical fibers, the tube comprising an inner fluorine-doped quartz glass layer and an outer quartz glass layer, so as to achieve inexpensive manufacture and improved dimensional stability of the quartz glass tube, it is suggested according to the invention that the quartz glass of the inner layer should be produced in a first plasma deposition process with formation of an inner layer having a wall thickness of at least 1.5 mm, with a fluorine content of at least 1.5% by wt. being set in the quartz glass, and that the quartz glass of the outer layer should be produced in a second plasma deposition process and deposited directly or indirectly on the inner layer with formation of a composite tube, and that the composite tube should be elongated into the quartz glass tube.

    Abstract translation: 为了改进用于制造石英玻璃管作为制造光纤的半成品的已知方法，该管包括内部掺氟石英玻璃层和外部石英玻璃层，以便实现便宜的制造和改善的尺寸稳定性 的石英玻璃管，根据本发明提出，内层的石英玻璃应该在第一等离子体沉积工艺中生产，形成壁厚至少为1.5mm的内层，氟含量 至少1.5重量％。 设置在石英玻璃中，并且外层的石英玻璃应该在第二等离子体沉积工艺中生产并直接或间接沉积在内层上，形成复合管，并且复合管应该被拉长成 石英玻璃管。

    OPTICAL FIBER, OPTICAL TRANSMISSION SYSTEM, AND METHOD OF MAKING OPTICAL FIBER
    176.
    发明申请
    OPTICAL FIBER, OPTICAL TRANSMISSION SYSTEM, AND METHOD OF MAKING OPTICAL FIBER 有权
    光纤，光传输系统和制造光纤的方法

    公开(公告)号：US20130148934A1

    公开(公告)日：2013-06-13

    申请号：US13706458

    申请日：2012-12-06

    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

    Inventor： Tetsuya NAKANISHI ,  Tatsuya KONISHI ,  Kazuya KUWAHARA

    IPC: G02B6/028 ,  C03B37/027

    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。 芯的相对折射率差在0.2％至0.32％之间，折射率体积在9％·mum2和18％·mum2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110m 2以上。 在1550nm波长处的衰减为0.19dB / km或更小。

    METHOD AND TUBULAR SEMIFINISHED PRODUCT FOR PRODUCING AN OPTICAL FIBER
    178.
    发明申请
    METHOD AND TUBULAR SEMIFINISHED PRODUCT FOR PRODUCING AN OPTICAL FIBER 有权
    用于生产光纤的方法和管状半纤维产品

    公开(公告)号：US20120324960A1

    公开(公告)日：2012-12-27

    申请号：US13583605

    申请日：2011-03-10

    Applicant: Ralph Sattmann ,  Jan Vydra ,  Michael Huenermann

    Inventor： Ralph Sattmann ,  Jan Vydra ,  Michael Huenermann

    IPC: C03B37/027 ,  G02B6/036

    CPC classification number: C03B37/02754 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/01242 ,  C03B37/018 ,  C03B37/027 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2205/30 ,  C03C13/045 ,  C03C2201/12 ,  G02B6/03633 ,  G02B6/0365 ,  Y10T428/2935

    Abstract: Methods for producing an optical fiber by elongating a silica glass blank or a coaxial group of silica glass components, on the basis of which a fiber is obtained that comprises a core zone, an inner jacket zone enclosing the core zone and a ring zone surrounding the inner jacket zone, are known. In order to provide, proceeding from this, a method, a tubular semi-finished product and a group of coaxial components for the cost-effective production of an optical fiber, which is characterized by a high quality of the boundary between the core and jacket and by low bending sensitivity, according to the invention, the silica glass of the ring zone is provided in the form of a ring zone tube made of silica glass having a mean fluorine content of at least 6000 weight ppm and the tube has an inner tube surface and an outer tube surface, wherein via the wall of the ring zone tube, a radial fluorine concentration profile is adjusted which has an inner fluorine depletion layer with a layer thickness of at least 1 μm and no more than 10 μm, in which the fluorine content decreases toward the inner tube surface and is no more than 3000 weight ppm in a region close to the surface which has a thickness of 1 μm.

    Abstract translation: 通过使二氧化硅玻璃坯料或同轴的二氧化硅玻璃成分组延长来制造光纤的方法，在此基础上获得包含芯区的纤维，包围芯区的内护套区和围绕该芯区的环带 内护套区域，已知。 为了提供一种用于成本有效地生产光纤的方法，管状半成品和一组同轴部件，其特征在于芯和夹套之间的边界质量高 并且通过低弯曲灵敏度，根据本发明，环区的石英玻璃以平均氟含量为至少6000重量ppm的石英玻璃制成的环形管的形式提供，并且管具有内管 表面和外管表面，其中通过环带管的壁，调节径向氟浓度分布，其具有层厚度为至少1μm且不大于10μm的内氟耗尽层，其中 氟含量向内管表面减少，并且在接近表面厚度为1μm的区域中不超过3000重量ppm。

    Low loss optical fiber designs and methods for their manufacture
    179.
    发明授权
    Low loss optical fiber designs and methods for their manufacture 有权
    低损耗光纤设计及其制造方法

    公开(公告)号：US08295668B2

    公开(公告)日：2012-10-23

    申请号：US13317073

    申请日：2011-10-07

    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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