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    • 4. 发明申请
    • METHOD FOR FABRICATING OPTICAL FIBER PREFORM WITHOUT HYDROXYL GROUP IN CORE
    • 用于制备核心中没有羟基的光学纤维预制件的方法
    • WO2004002910A1
    • 2004-01-08
    • PCT/KR2003/001251
    • 2003-06-26
    • LG CABLE LTD.LEE, Chan-JooPARK, Lae-HyukKIM, Jae-SunSON, Soon-Il
    • LEE, Chan-JooPARK, Lae-HyukKIM, Jae-SunSON, Soon-Il
    • C03B37/018
    • C03B37/01853C03B37/01815C03B37/01884C03B2201/075C03B2201/31
    • Method for fabricating an optical fiber preform substantially without hydroxyl group in core includes forming clad layer having relatively low refractive index by depositing soot (SiO 2 , GeO 2 ) to inner surface of quartz tube; and forming core layer having relatively high refractive index on clad layer, which includes (a) a base core layer forming step composed of generating soot by heating inside of quartz tube to 1000 °C~1400 °C with introducing reaction gases (SiCl 4 GeCl 4 ) into quartz tube, accumulating soot on clad layer removing hydroxyl-groups (OH) and moisture from soot and tube by heating inside of quartz tube to 600 °C~1200 °C with introducing dehydration gases (He, Cl 2 ; O 2 ) into quartz tube, and sintering and vitrifying soot by heating quartz tube inside over 1700 °C with introducing dehydration gas (He, Cl 2 , O 2 ); and (b) a step of forming at least one additional core layer on base core layer by repeating the accumulating/dehydrating/sintering of the step (a) at least one time.
    • 用于制造基本上没有羟基的光纤预制件的方法包括通过将石墨(SiO 2,GeO 2)沉积到石英管的内表面上而形成具有相对较低折射率的覆层; 以及在包层上形成具有相对较高折射率的芯层,其包括:(a)通过将石英管内加热至1000℃〜1400℃,通过将反应气体(SiCl 4 GeCl 4)引入到 石英管,通过将石英管内加热至600℃〜1200℃,将脱水气体(He,Cl2; O2)引入石英管,在包层上积聚烟灰,从石灰管中除去羟基(OH)和水分, 并通过加热脱水气体(He,Cl2,O2)将石英管加热到1700℃以上,从而烧结和玻璃化烟灰; 和(b)通过至少一次重复步骤(a)的累积/脱水/烧结,在基核心层上形成至少一个附加核心层的步骤。
    • 6. 发明申请
    • BURNER SHIELD TO REDUCE SOOT BUILDUP
    • 燃烧器屏蔽,以减少SOOT BUILDUP
    • WO2015179485A1
    • 2015-11-26
    • PCT/US2015/031719
    • 2015-05-20
    • CORNING INCORPORATED
    • BOOKBINDER, Dana CraigHARPER, Brian LeeMUMMUDI-BOOPATHY, Mothivel-BalaiyyaTANDON, Pushkar
    • C03B37/014
    • C03B37/01815C03B37/0142C03B2207/40F23D91/02F23D99/003Y02P40/57
    • A soot deposition burner assembly, having at least one burner including a burner face on a first surface of a burner support. The burner produces a flame which extends generally perpendicularly to the first surface. A burner shield includes a first wall extending generally perpendicularly from the first surface surrounding the burner face. The burner shield has a base end with a first surface area facing toward the first surface and a shield face with a second surface area facing away from the first surface. To reduce the buildup of soot material, the second surface area is smaller than the first surface area, and the wall thickness is less at the shield face than the base end. Additionally, air can be directed along an exterior surface of the first wall from the base end toward the shield face to further reduce soot buildup.
    • 一种烟灰沉积燃烧器组件,其具有至少一个燃烧器,其包括在燃烧器支撑件的第一表面上的燃烧器面。 燃烧器产生大致垂直于第一表面延伸的火焰。 燃烧器护罩包括从围绕燃烧器表面的第一表面大致垂直延伸的第一壁。 燃烧器防护罩具有基端,第一表面区域面向第一表面,屏蔽面具有背离第一表面的第二表面区域。 为了减少烟灰材料的积聚,第二表面积小于第一表面积,并且在屏蔽面上的壁厚小于基端。 此外,空气可以沿着第一壁的外表面从基端朝向屏蔽面引导,以进一步减少烟灰积聚。