OPTICAL FIBER PREFORM, OPTICAL FIBER, AND METHOD OF MANUFACTURING OPTICAL FIBER PREFORM
    2.
    发明申请
    OPTICAL FIBER PREFORM, OPTICAL FIBER, AND METHOD OF MANUFACTURING OPTICAL FIBER PREFORM 有权
    光纤预制件,光纤和制造光纤预制件的方法

    公开(公告)号:US20120189262A1

    公开(公告)日:2012-07-26

    申请号:US13352644

    申请日:2012-01-18

    IPC分类号: G02B6/00 C03C13/04 C03B37/012

    摘要: An optical fiber preform includes a core portion, in which the core portion includes an alkali-metal-doped core glass portion doped with an alkali metal, the maximum concentration of oxygen molecules in the core portion is 30 mol ppb or more, and the average concentration of the alkali metal in the core portion is 5 atomic ppm or more. A method of manufacturing an optical fiber preform includes an alkali-metal-doping step of doping a pipe composed of silica-based glass with an alkali metal, an oxygen-molecule-doping step of doping the glass pipe with oxygen molecules, and a collapsing step of collapsing the glass pipe by heating the glass pipe, in which the optical fiber preform is manufactured.

    摘要翻译: 光纤预制棒包括芯部,芯部包括掺杂有碱金属的碱金属掺杂的芯玻璃部分,芯部中的氧分子的最大浓度为30mol ppb以上,平均 芯部中的碱金属的浓度为5原子ppm以上。 制造光纤预制棒的方法包括:碱金属掺杂步骤,用碱金属掺杂由二氧化硅基玻璃构成的管,用氧分子掺杂玻璃管的氧分子掺杂步骤,以及塌陷 通过加热其中制造光纤预制棒的玻璃管来塌缩玻璃管的步骤。

    Method for producing optical fiber preform
    3.
    发明授权
    Method for producing optical fiber preform 有权
    光纤预制棒的制造方法

    公开(公告)号:US08839646B2

    公开(公告)日:2014-09-23

    申请号:US13356984

    申请日:2012-01-24

    摘要: There is provided a method for producing an optical fiber preform used in producing an optical fiber having low attenuation. The production method includes (1) a rod formation step of forming a glass rod of a silica glass containing an alkali metal element, the average concentration of the alkali metal element being 5 at·ppm or more, (2) a heat treatment step of heat-treating the glass rod, (3) a core part formation step of forming an alkali metal element-free silica glass layer having a chlorine concentration of 6000 at·ppm or more around the perimeter of the glass rod heat-treated in the heat treatment step to form a core part including the glass rod and the silica glass layer, and (4) a cladding part formation step of forming a cladding part of a silica-based glass having a lower refractive index than the core part around the perimeter of the core part.

    摘要翻译: 提供了用于制造具有低衰减的光纤的光纤预制件的制造方法。 制造方法包括:(1)形成含有碱金属元素的石英玻璃的玻璃棒的棒形成工序,碱金属元素的平均浓度为5atppm以上,(2)热处理工序 对玻璃棒进行热处理,(3)在热处理的玻璃棒的周边周围形成氯浓度为6000以上的碱金属元素的二氧化硅玻璃层的芯部形成工序 处理步骤以形成包括玻璃棒和石英玻璃层的核心部分,以及(4)包层部分形成步骤,形成具有比围绕周边的核心部分的折射率低的二氧化硅基玻璃的包层部分 核心部分。

    OPTICAL FIBER AND OPTICAL FIBER PREFORM
    4.
    发明申请
    OPTICAL FIBER AND OPTICAL FIBER PREFORM 有权
    光纤和光纤预制

    公开(公告)号:US20120263427A1

    公开(公告)日:2012-10-18

    申请号:US13441978

    申请日:2012-04-09

    IPC分类号: G02B6/02

    摘要: An optical fiber preform has a core portion having a first core portion including a central axis, a second core portion disposed around the first core portion, and a third core portion disposed around the second core portion. The first core portion contains 10 atomic ppm or more of an alkali metal and 10 to 600 atomic ppm of chlorine, the second core portion contains 10 atomic ppm or less of the alkali metal and 10 to 600 atomic ppm of chlorine, and the third core portion contains 10 atomic ppm or less of the alkali metal and 2,000 atomic ppm or more of chlorine. An optical fiber has a core region doped with an alkali metal and chlorine, wherein the minimum concentration of chlorine in the core region is 1,000 atomic ppm or more, and the average concentration of the alkali metal therein is 0.2 atomic ppm or more.

    摘要翻译: 光纤预制件具有芯部,该芯部具有包括中心轴的第一芯部,围绕第一芯部设置的第二芯部,以及设置在第二芯部周围的第三芯部。 第一芯部包含10原子ppm以上的碱金属和10〜600原子ppm的氯,第二核部分含有10原子ppm以下的碱金属和10〜600原子ppm的氯,第三核 部分含有10原子ppm以下的碱金属和2,000原子ppm以上的氯。 光纤具有掺杂有碱金属和氯的芯区域,其中芯区域中的氯的最小浓度为1,000原子ppm以上,碱金属的平均浓度为0.2原子ppm以上。

    METHOD FOR MAKING AN OPTICAL FIBER PREFORM
    5.
    发明申请
    METHOD FOR MAKING AN OPTICAL FIBER PREFORM 审中-公开
    制造光纤预制件的方法

    公开(公告)号:US20130034654A1

    公开(公告)日:2013-02-07

    申请号:US13557248

    申请日:2012-07-25

    IPC分类号: G02B6/036

    摘要: A method for the manufacture of an optical fiber preform for producing a low attenuation optical fiber with high yield, comprising preparing a core rod and adding a cladding region. At the step of preparing a core rod, the core rod is produced including a first core region with Cl density of less than 600 atm-ppm, a second core region with Cl density of less than 600 atm-ppm around the first core region, and a third core region with Cl density of 3000 atm-ppm or more around the second core region. An alkali metal is selectively added to the first core region among the first, second, and third core regions. A cladding region is formed around the core rod by heating at a temperature of 1200° C. or higher for 7 hours or less.

    摘要翻译: 一种用于制造用于以高产率制造低衰减光纤的光纤预制棒的方法,包括制备芯棒并添加包层区域。 在制备芯棒的步骤中,制造芯棒,其包括Cl密度小于600atm-ppm的第一芯区域,在第一芯区域附近具有小于600atm-ppm的Cl密度的第二芯区域, 以及围绕第二芯区域的Cl密度为3000atm-ppm以上的第三核心区域。 在第一,第二和第三芯区域中的第一芯区域中选择性地添加碱金属。 通过在1200℃以上的温度加热7小时以下,在芯棒周围形成包层区域。

    METHOD FOR PRODUCING OPTICAL FIBER PREFORM
    6.
    发明申请
    METHOD FOR PRODUCING OPTICAL FIBER PREFORM 有权
    生产光纤预制件的方法

    公开(公告)号:US20120192593A1

    公开(公告)日:2012-08-02

    申请号:US13356984

    申请日:2012-01-24

    IPC分类号: C03C25/12 C03C25/42

    摘要: There is provided a method for producing an optical fiber preform used in producing an optical fiber having low attenuation. The production method includes (1) a rod formation step of forming a glass rod of a silica glass containing an alkali metal element, the average concentration of the alkali metal element being 5 at·ppm or more, (2) a heat treatment step of heat-treating the glass rod, (3) a core part formation step of forming an alkali metal element-free silica glass layer having a chlorine concentration of 6000 at·ppm or more around the perimeter of the glass rod heat-treated in the heat treatment step to form a core part including the glass rod and the silica glass layer, and (4) a cladding part formation step of forming a cladding part of a silica-based glass having a lower refractive index than the core part around the perimeter of the core part.

    摘要翻译: 提供了用于制造具有低衰减的光纤的光纤预制件的制造方法。 制造方法包括:(1)形成含有碱金属元素的石英玻璃的玻璃棒的棒形成工序,碱金属元素的平均浓度为5atppm以上,(2)热处理工序 对玻璃棒进行热处理,(3)在热处理的玻璃棒的周边周围形成氯浓度为6000以上的碱金属元素的二氧化硅玻璃层的芯部形成工序 处理步骤以形成包括玻璃棒和石英玻璃层的核心部分,以及(4)包层部分形成步骤,形成具有比围绕周边的核心部分的折射率低的二氧化硅基玻璃的包层部分 核心部分。

    Optical fiber preform, optical fiber, and method of manufacturing optical fiber preform
    7.
    发明授权
    Optical fiber preform, optical fiber, and method of manufacturing optical fiber preform 有权
    光纤预制棒,光纤和制造光纤预制棒的方法

    公开(公告)号:US09139466B2

    公开(公告)日:2015-09-22

    申请号:US13352644

    申请日:2012-01-18

    IPC分类号: G02B6/00 C03B37/018

    摘要: An optical fiber preform includes a core portion, in which the core portion includes an alkali-metal-doped core glass portion doped with an alkali metal, the maximum concentration of oxygen molecules in the core portion is 30 mol ppb or more, and the average concentration of the alkali metal in the core portion is 5 atomic ppm or more. A method of manufacturing an optical fiber preform includes an alkali-metal-doping step of doping a pipe composed of silica-based glass with an alkali metal, an oxygen-molecule-doping step of doping the glass pipe with oxygen molecules, and a collapsing step of collapsing the glass pipe by heating the glass pipe, in which the optical fiber preform is manufactured.

    摘要翻译: 光纤预制棒包括芯部,芯部包括掺杂有碱金属的碱金属掺杂的芯玻璃部分,芯部中的氧分子的最大浓度为30mol ppb以上,平均 芯部中的碱金属的浓度为5原子ppm以上。 制造光纤预制棒的方法包括:碱金属掺杂步骤,用碱金属掺杂由二氧化硅基玻璃构成的管,用氧分子掺杂玻璃管的氧分子掺杂步骤,以及塌陷 通过加热其中制造光纤预制棒的玻璃管来塌缩玻璃管的步骤。

    METHOD FOR PRODUCING OPTICAL FIBER
    10.
    发明申请
    METHOD FOR PRODUCING OPTICAL FIBER 审中-公开
    生产光纤的方法

    公开(公告)号:US20120321261A1

    公开(公告)日:2012-12-20

    申请号:US13517859

    申请日:2012-06-14

    IPC分类号: C03B37/027 G02B6/02

    摘要: There is provided a method for producing an optical fiber having low attenuation, the optical fiber including a core that contains an alkali metal element. An optical fiber preform that includes a core part and a cladding part is drawn with a drawing apparatus to form an optical fiber, the core part having an average concentration of an alkali metal element of 5 atomic ppm or more. During the drawing, the time the temperature of glass is maintained at 1500° C. or higher is 110 minutes or less. The drawing speed is preferably 1200 m/min or more and more preferably 1500 m/min to 2300 m/min. The optical fiber preform preferably has a diameter of 70 mm to 170 mm and more preferably 90 mm to 150 mm.

    摘要翻译: 提供了一种制造具有低衰减的光纤的方法,该光纤包括含有碱金属元素的芯。 包括芯部和包层部的光纤预制棒用拉伸装置拉伸以形成光纤,核部分的碱金属元素的平均浓度为5原子ppm以上。 在图中,玻璃的温度保持在1500℃以上的时间为110分钟以下。 拉伸速度优选为1200m / min以上,更优选为1500m / min〜2300m / min。 光纤预制棒的直径优选为70mm〜170mm,更优选为90mm〜150mm。