Manufacturing apparatus and manufacturing method of porous glass base material for optical fiber

    公开(公告)号:US12043564B2

    公开(公告)日:2024-07-23

    申请号:US17872407

    申请日:2022-07-25

    摘要: A manufacturing method of a porous glass base material for optical fiber includes: controlling a flow rate of a raw material liquid of an organic siloxane by a liquid mass flow controller; introducing raw material liquid to a raw material liquid nozzle of a vaporizer by a raw material liquid pipe; ejecting raw material liquid into the vaporizer; mixing raw material liquid and carrier gas to vaporize raw material liquid to form mixed gas; supplying mixed gas to a burner; combusting mixed gas together with a combustible gas and a combustion supporting gas in the burner to produce SiO2 particles; depositing SiO2 particles on a starting core base material to form the porous glass base material; and closing an open/close valve on a flow path of the raw material liquid pipe to stop supply of raw material liquid, while continuing to supply carrier gas, combustible gas, and combustion supporting gas.

    Manufacturing apparatus and manufacturing method of porous glass base material for optical fiber

    公开(公告)号:US11897807B2

    公开(公告)日:2024-02-13

    申请号:US17872376

    申请日:2022-07-25

    摘要: A porous glass base material manufacturing apparatus for an optical fiber includes: a liquid mass flow controller for controlling a flow rate of raw material liquid of an organic siloxane; a vaporizer for mixing raw material liquid and carrier gas to vaporize raw material liquid to form mixed gas; a raw material liquid nozzle for ejecting raw material liquid into the vaporizer; a carrier gas supply pipe for supplying carrier gas into the vaporizer; a raw material liquid pipe for introducing raw material liquid into the nozzle; a burner for combusting mixed gas with combustible gas and combustion supporting gas to produce SiO2 particles; a mixed gas pipe for supplying mixed gas to the burner; an open/close valve on a flow path of the raw material liquid pipe; and a purge gas supply pipe that joins the raw material liquid pipe between the valve and the raw material liquid nozzle.

    Barbell Optical Fiber And Method Of Making The Same
    5.
    发明申请
    Barbell Optical Fiber And Method Of Making The Same 有权
    杠铃光纤及其制作方法

    公开(公告)号:US20150110452A1

    公开(公告)日:2015-04-23

    申请号:US14395698

    申请日:2013-05-13

    摘要: High aspect ratio core optical fiber designs, which could be semi-guiding, including a core region having a first refractive index and a high aspect ratio elongated cross-section along a slow axis direction, are described. An internal cladding having a second refractive index sandwiches the core and acts as a fast-axis signal cladding. The core has an edge region at both of its short edges that is in contract with edge-cladding regions having a barbell shape. The refractive index of the core regions, the refractive index of the internal claddings, and the refractive index of the edge-cladding regions, are selected so as to maximize the optical power of a lowest-order mode propagating in the fiber core, and to minimize the optical power of the next-order modes in the fiber core. A process to fabricate such a high aspect ratio core fiber is also provided.

    摘要翻译: 描述了可以是半导向的高纵横比纤芯光纤设计,包括沿慢轴方向具有第一折射率和高纵横比细长横截面的芯区域。 具有第二折射率的内部包层夹住芯并用作快轴信号包层。 芯具有在其短边缘处的边缘区域,其与具有杠铃形状的边缘包层区域收缩。 选择核心区域的折射率,内部包层的折射率和边缘包层区域的折射率,以使在纤维芯中传播的最低阶模的光功率最大化,并且 最小化光纤芯中下一阶模式的光功率。 还提供了制造这种高纵横比纤芯的方法。