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    ENCEINTE REACTIONNELLE ET PROCEDE POUR LA PRÉPARATION DE PREFORMES POUR FIBRES OPTIQUES
    71.
    发明公开
    ENCEINTE REACTIONNELLE ET PROCEDE POUR LA PRÉPARATION DE PREFORMES POUR FIBRES OPTIQUES 审中-公开
    反应容器AND METHOD FOR光纤预制件的制造

    公开(公告)号：EP1525168A1

    公开(公告)日：2005-04-27

    申请号：EP03760702.5

    申请日：2003-06-12

    Applicant: Umicore

    Inventor： FONTENEAU, Gilles ,  BOUSSARD-PLEDEL, Catherine ,  LE COQ, David

    IPC: C03B37/012 ,  C03B19/02

    CPC classification number: C03B37/01268 ,  C03B19/02 ,  C03B2201/86

    Abstract: The invention concerns a reaction chamber comprising a first container (1), a second container (4) connected to a conduit (6), an outer tube (3) emerging into the container (1), an outer tube (8) emerging into the conduit. The container (1) is designed to receive a sleeve glass, and the container (4) a core glass for optical fiber. The method for using said chamber, after vacuum sealing in (3a) and (8a), and heating the chamber at a sufficient temperature for melting the glasses, the chamber being in the position represented with the tube (3) in vertical position, consists: in a 180° anti-clockwise rotation about an axis perpendicular to the figure. The sleeve glass flows into the tube (3) while the core glass remains confined in the container (4); cooling the tube (3), then returning to the original position; part of the sleeve glass, maintained in liquid form in the center of the tube (3), drops into the container (1); carrying out another 180° rotation, but clockwise. The core glass flows into the conduit (6) and drops by gravity into the empty central part of the tube (3), while the sleeve glass which has dropped again into the tube (3) and has cooled, remains congealed on the wall of the container (1). The invention thus enables preparation, in a vacuum sealed chamber containing the two glasses, a preform for optical fiber.

    Chalcogenide glass optical fibre
    74.
    发明公开
    Chalcogenide glass optical fibre 失效
    硫属化物玻璃光纤

    公开(公告)号：EP0849234A2

    公开(公告)日：1998-06-24

    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用预成型体的制造方法，其特征在于，将具有芯用硫属化物玻璃棒的包覆管插入石英管内，在该石英管的底部具有孔径小于包层管外径的喷嘴， 加热石英管的底部并牵引包含芯用玻璃棒的包壳管，以及通过加热和拉拔由此获得的预成型物来制造硫属化物玻璃纤维的工艺，由此处理玻璃的失透和在 可以防止芯玻璃或芯玻璃包层玻璃界面，并且可以提高芯玻璃与包层玻璃之间的粘附性。 特别是在芯部用玻璃材料不含Ge的情况下，具有在红外光通过纤维时玻璃纤维的传输损失小，机械强度高的芯包层结构的硫属化物玻璃纤维。

    Chalcogenide glass optical fibre, process for producing a preform therefor and process for drawing the fibre therefrom
    75.
    发明公开
    Chalcogenide glass optical fibre, process for producing a preform therefor and process for drawing the fibre therefrom 失效
    硫属化物玻璃，使得预成型体为预成型件和拉伸工艺的方法的光纤

    公开(公告)号：EP0731063A3

    公开(公告)日：1997-01-08

    申请号：EP96103472.5

    申请日：1996-03-06

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

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

    IPC: C03B37/012 ,  C03B37/027 ,  C03C13/04 ,  C03C25/02

    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 preform compositing said cladding tube and glass rod for core through the nozzle of the said quartz tube. Also disclosed is 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: 一种生产用于硫属化物玻璃纤维，其中含有插入包壳管的预成型件处理其中包含有用于核的硫属化物玻璃杆插入石英管具有在其底部的喷嘴具有孔径比包层管的外径小，在本地 加热石英管的底部并拉动所述预成型件通过所述石英管的喷嘴合成所述金属包层管和玻璃棒芯。 所以游离缺失盘是用于制造由加热硫族化物玻璃纤维和拉伸该预成型件这样得到的，通过其处理玻璃的失透和在芯玻璃或在芯玻璃包层玻璃界面气泡的产生可以防止过程和 芯玻璃和包层玻璃之间的粘附性能够得到改善。 特别是，当为芯玻璃材料不含锗，在研究了硫属化物玻璃纤维的芯 - 包层结构那样的玻璃纤维的传输损耗。当红外光通过光纤小，并且机械强度高。

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