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    HOLEY OPTICAL FIBRES OF NON-SILICA BASED GLASS
    264.
    发明公开
    HOLEY OPTICAL FIBRES OF NON-SILICA BASED GLASS 审中-公开
    富士OPTISCHE FASERN AUS NICHT AUF SILICIUMDIOXID BASIERENDEM GLAS

    公开(公告)号：EP1313676A1

    公开(公告)日：2003-05-28

    申请号：EP01956671.0

    申请日：2001-08-13

    Applicant: UNIVERSITY OF SOUTHAMPTON

    Inventor： BRODERICK, Neil, Gregory, Raphael ,  HEWAK, Daniel, William,University of Southampton ,  MONRO, Tanya, Mary,University of Southampton ,  RICHARDSON, David, John,University of Southampton ,  WEST, Yvonne, Deana,University of Southampton

    IPC: C03C13/04 ,  C03B37/012 ,  G02B6/20

    CPC classification number: G02B6/02347 ,  C03B37/01205 ,  C03B37/0122 ,  C03B2201/60 ,  C03B2201/62 ,  C03B2201/70 ,  C03B2201/78 ,  C03B2201/80 ,  C03B2201/82 ,  C03B2201/83 ,  C03B2201/84 ,  C03B2201/86 ,  C03B2201/88 ,  C03B2203/14 ,  C03B2203/42 ,  C03C13/04 ,  C03C13/041 ,  C03C13/046 ,  C03C13/048 ,  C03C25/106 ,  C03C25/1062 ,  G02B6/02361

    Abstract: To overcome problems of fabricating conventional core-clad optical fibre from non-silica based (compound) glass, it is proposed to fabricate non-silica based (compound) glass optical fibre as holey fibre i.e. one contining Longitudinal holes in the cladding. This removes the conventional problems associated with mismatch of the physical properties of the core and clad compound glasses, since a holey fibre can be made of a single glass composition. With a holey fibre, it is not necessary to have different glasses for the core and cladding, since the necessary refractive index modulation between core and cladding is provided by the microstructure of the clad, i.e. its holes, rather than by a difference in materials properties between the clad and core glasses. Specifically, the conventional thermal mismatch problems between core and clad are circumvented. A variety of fibre types can be fabricated from non-silica based (compounds) glasses, for example: single-mode fibre; photonic band gap fibre; highly non-linear fibre; fibre with photosensitivity written gratings and other refractive index profile structures; and rare-earth doped fibres (e.g. Er, Nd, Pr) to provide gain media for fibre amplifiers and lasers.

    Abstract translation: 为了克服从非二氧化硅（复合）玻璃制造常规的包芯光纤的问题，提出了制造非二氧化硅基（复合）玻璃光纤作为多孔纤维，即在包层中连续的纵向孔。 这消除了与芯和包覆复合玻璃的物理性能失配相关的常规问题，因为多孔纤维可以由单一玻璃组合物制成。 使用多孔纤维，由于芯和包层之间必需的折射率调制是通过包层的微结构（即其孔）而不是材料性质的差异来提供的，因此不需要具有用于芯和包层的不同的玻璃 在包层和核心眼镜之间。 具体来说，芯和包层之间常规的热失配问题被规避。 各种纤维类型可以由非二氧化硅（化合物）玻璃制成，例如：单模纤维; 光子带隙光纤; 高度非线性的纤维; 具有感光性的光纤写入光栅和其他折射率分布结构; 和稀土掺杂光纤（例如Er，Nd，Pr），为光纤放大器和激光器提供增益介质。

    Chalcogenide glass optical fibre
    265.
    发明公开
    Chalcogenide glass optical fibre 失效
    Optische Faser aus Halcogenidglas

    公开(公告)号：EP0849234A3

    公开(公告)日：1998-09-30

    申请号：EP98104164.3

    申请日：1996-03-06

    Applicant: HOYA CORPORATION ,  NIPPON SHEET GLASS CO. LTD.

    Inventor： Yoneda, Yoshitaka ,  Morimoto, Shozo ,  Yamashita, Toshiharu

    IPC: C03C13/04

    CPC classification number: C03B37/02754 ,  C03B37/01245 ,  C03B37/027 ,  C03B2201/86 ,  C03B2205/08 ,  C03B2205/10 ,  C03B2205/14 ,  C03B2205/16 ,  C03C3/321 ,  C03C4/10 ,  C03C13/043 ,  C03C25/18 ,  Y02P40/57 ,  Y10S501/904 ,  Y10T428/2929

    Abstract: A process for producing a preform for a chalcogenide glass fiber which comprises inserting a cladding tube having contained therein a chalcogenide glass rod for core into a quartz tube having at its bottom a nozzle having an aperture smaller than the outer diameter of the cladding tube, locally heating the bottom of the quartz tube and pulling the cladding tube having contained the glass rod for core and a process for producing a chalcogenide glass fiber by heating and drawing the preform thus obtained, by which processes the devitrification of glass and the generation of bubbles in the core glass or at the core glass-cladding glass interface can be prevented and the adhesion between the core glass and the cladding glass can be improved. In particular, when the glass material for core does not contain Ge, a chalcogenide glass fiber having such a core-cladding structure that the transmission loss of the glass fiber when infrared light pass through the fiber is small and the mechanical strength is high.

    Abstract translation: 一种硫属化物玻璃纤维预成型体的制造方法，其特征在于，将包含核心的硫属化物玻璃棒的包覆管插入石英管，所述石英管的底部具有孔径小于包层管的外径的喷嘴， 加热石英管的底部并拉动预制件，通过所述石英管的喷嘴将所述包层管和芯的玻璃棒合成。 还公开了通过加热和拉伸所得到的预成型体来生产硫族化物玻璃纤维的方法，通过该方法可以防止玻璃的失透和芯玻璃或核心玻璃 - 包层玻璃界面中的气泡产生，并且 可以提高芯玻璃与包层玻璃之间的粘合性。 特别是，当核心用玻璃材料不含Ge时，具有这样的芯 - 包层结构的硫族化物玻璃纤维，当红外光通过纤维时，玻璃纤维的透射损失小，机械强度高。

    Method for manufacturing glass preform and glass fiber
    266.
    发明公开
    Method for manufacturing glass preform and glass fiber 失效
    Verfahren zur Herstellung einer Glasfaservorform und Glasfaser

    公开(公告)号：EP0855371A1

    公开(公告)日：1998-07-29

    申请号：EP98100876.6

    申请日：1998-01-20

    Applicant: HOYA CORPORATION

    Inventor： Itoh, Katsuhisa

    IPC: C03B37/012 ,  C03B17/02 ,  C03C15/00

    CPC classification number: C03B37/027 ,  C03B37/012 ,  C03B37/01211 ,  C03B37/01274 ,  C03B2201/86 ,  C03C3/321 ,  C03C13/043 ,  C03C15/00 ,  Y10S65/15

    Abstract: A method for manufacturing a glass preform from a metal sulfide chalcogenide glass to which a large amount of light emitting substances can be added includes steps of etching a surface made of the chalcogenide glass or oxychalcogenide glass of disc shape core and clad forming glass starting materials by an etchant including an acid and a compound reacting with a hydrogen chalcogenide, and forming the core forming glass starting material and the clad forming glass starting material into a united body serving as a glass preform. In a method for manufacturing a single-mode glass fiber using a preform method by drawing the glass preform whose outer round surface is made of a chalcogenide glass or oxychalcogenide glass, the outer round surface of the glass preform is etched using an etchant including an acid and a compound reacting with a hydrogen chalcogenide and then drawn into the glass fiber. In another method for manufacturing a glass fiber by drawing a rod-in-tube in which an outer round surface of the rod and inner and outer round surfaces of the tube are made of a chalcogenide glass or oxychalcogenide glass, the round surfaces made of the chalcogenide glass or oxychalcogenide glass are etched by the etchant including an acid and a compound reacting with a hydrogen chalcogenide and then drawn into the glass fiber.

    Abstract translation: 从可以添加大量发光物质的金属硫化物硫族化物玻璃制造玻璃预制体的方法包括以下步骤：通过以下步骤：蚀刻由盘状芯和含氮成形玻璃原料的硫族化物玻璃或氧化硫化物玻璃制成的表面， 包括酸和与氢硫族化合物反应的化合物的蚀刻剂，以及将形成芯的玻璃起始材料和包层成型玻璃起始材料形成为用作玻璃预制件的联合体。 在使用预成型法制造单模玻璃纤维的方法中，通过拉拔其外圆表面由硫族化物玻璃或氧化硫化物玻璃制成的玻璃预制件，使用包含酸的蚀刻剂来蚀刻玻璃预制件的外圆面 以及与氢硫族化合物反应然后吸入玻璃纤维的化合物。 在另一种制造玻璃纤维的方法中，通过拉伸杆的外圆表面和管内外圆表面由硫族化物玻璃或氧化硫化物玻璃制成的棒内管，由 硫族化物玻璃或氧化硫化物玻璃被蚀刻剂蚀刻，包括酸和与氢硫族化合物反应的化合物，然后被吸入玻璃纤维中。

    Method for drawing a chalcogenide-containing glass fiber
    268.
    发明公开
    Method for drawing a chalcogenide-containing glass fiber 失效
    Verfahren zum Ziehen einer Chalkogenidenthaltenden Glasfaser

    公开(公告)号：EP0850889A1

    公开(公告)日：1998-07-01

    申请号：EP97122591.7

    申请日：1997-12-20

    Applicant: HOYA CORPORATION

    Inventor： Itoh, Katsuhisa ,  Tawarayama, Hiromasa

    IPC: C03B37/027

    CPC classification number: C03B37/027 ,  C03B2201/86 ,  C03C3/12 ,  C03C3/321 ,  C03C4/10 ,  C03C13/041 ,  C03C13/043

    Abstract: A method for manufacturing a glass fiber includes a process of drawing a starting glass material partially or entirely made of chalcogenide glass or oxychalcogenide glass, such as preform rod, rod-in-tube, or jacketing tube, into a glass fiber in an atmosphere containing sulfur. The concentration of the sulfur in the atmosphere is set at sulfur's vapor pressure or greater around the glass surface at a maximum temperature of the glass fiber while the glass fiber is drawn, thereby fabricating the glass fiber without forming substantially any crystallization on the glass surface.

    Abstract translation: 玻璃纤维的制造方法包括将含有硫属化物玻璃或氧化硫化物玻璃（例如预制棒，棒内管或护套管）的起始玻璃材料在含有 硫。 在玻璃纤维被拉伸的同时，在玻璃纤维的最高温度下，大气中硫的浓度设定在玻璃表面附近的硫蒸气压或更大，由此制造玻璃纤维而不在玻璃表面上基本上形成任何结晶。

    Method of making optical fiber with low melting glass core
    269.
    发明公开
    Method of making optical fiber with low melting glass core 失效
    一种用于制造，具有熔化低温玻璃芯光纤的方法

    公开(公告)号：EP0761616A2

    公开(公告)日：1997-03-12

    申请号：EP96306086.8

    申请日：1996-08-21

    Applicant: AT&T Corp.

    Inventor： Bruce, Allan James ,  DiGiovanni, David John

    IPC: C03B37/012

    CPC classification number: C03B37/0124 ,  C03B37/01245 ,  C03B37/01274 ,  C03B2201/02 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/50 ,  C03B2201/86

    Abstract: The disclosed method of making a mixed glass optical fiber exemplarily comprises providing a high-silica tube, and causing molten non-high silica glass to flow into the bore (12) of the tube by application of a pressure differential. In order to prevent cracking, the tube desirably has an outer diameter/inner diameter ratio of at least 5, preferably about 10 or even more, and an inner diameter of at most 1 mm. In a preferred embodiment, a conventional SiO 2 tube is partially collapsed to an inner diameter less than 1 mm, a quantity of a non-high-silica glass is placed in a neck of the partially collapsed tube and heated such that molten glass communicates with the reduced-diameter portion of the bore and can be drawn into the reduced-diameter portion by means of a vacuum. The resulting mixed glass body is then further stretched to result in a core rod of core diameter at most 0.3 mm. After overcladding the core rod with SiO 2 , fiber is drawn from the thus produced preform. A thus produced fiber with SiO 2 cladding and SiO 2 -Al 2 O 3 -La 2 O 3 -Er 2 O 3 core was used as an optical fiber amplifier and provided high gain.

    Abstract translation: 制备混合的玻璃光纤示例性地的盘游离缺失方法包括提供高硅管，并且使熔融的非高二氧化硅玻璃由一个压力差的施加而流入管的孔（12）。 为了防止开裂，管优选具有至少5的外径/内径比，优选10或更约，并在最多1mm的内径。 在优选的实施方式一常规的SiO 2管子被部分地折叠到帧内直径小于1毫米，一个非高二氧化硅玻璃的量在部分折叠管的颈部放置并加热搜索做熔融玻璃与进行通信 和孔的直径减小部分可被吸入通过真空的装置中的直径减小部分。 将所得的混合玻璃体然后进一步拉伸至导致在最大0.3mm芯径的芯棒。 包覆芯棒有SiO 2后，纤维从由此产生的预制件拉制。 甲这样制造纤维有SiO 2包层和SiO2-Al2O3的-镧核Er2O3什么用来作为光纤放大器和提供高增益。

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