Optical fiber, in particular a laser fiber containing a doped glass fiber core and cladding around the fiberglass core
    2.
    发明授权
    Optical fiber, in particular a laser fiber containing a doped glass fiber core and cladding around the fiberglass core 有权
    光纤,特别是包含掺杂的玻璃纤维芯和围绕玻璃纤维芯的包层的激光光纤

    公开(公告)号:US08879879B2

    公开(公告)日:2014-11-04

    申请号:US13320440

    申请日:2010-06-09

    Abstract: The invention relates to an optical fiber, in particular a laser fiber, containing a doped glass fiber core (1) and cladding (2) around the latter with a refraction index profile which decreases outwards from the fiber core. The optical fiber is distinguished by at least one intermediate layer (3, 4, 5) being disposed between the glass fiber core and the cladding to reduce the mechanical tension therebetween. In one advantageous embodiment, the intermediate layer is doped in such a way as to ensure a stepped mechanical tension distribution between the glass fiber core and the cladding, and is co-doped in such a way as to reduce the refractive index and counteract the refraction index-increasing effect of the intermediate layer doping. The invention further relates to an application of at least one doped barrier layer to a core region during preparation of the preform to avoid diffusion of special core dopants from the core during the collapse process, and to allow the diffusion of special dopants between the barrier layer and the core layer.

    Abstract translation: 本发明涉及一种光纤,特别是激光光纤,其中包含掺杂的玻璃纤维芯(1)和包层(2),后者具有从光纤芯向外减小的折射率分布。 光纤的特征在于至少一个中间层(3,4,5)设置在玻璃纤维芯和包层之间以减小它们之间的机械张力。 在一个有利的实施例中,中间层以这样的方式被掺杂,以确保玻璃纤维芯和包层之间的阶梯式机械张力分布,并且以减少折射率并抵消折射的方式共掺杂 指数增加效应的中间层掺杂。 本发明还涉及在制备预制棒期间将至少一个掺杂的阻挡层应用于核心区域,以避免在塌陷过程中特殊的核掺杂剂从核心扩散,并且允许特殊掺杂剂在阻挡层 和核心层。

    Apparatus for removing dust from gas
    3.
    发明授权
    Apparatus for removing dust from gas 失效
    用于从气体中除去灰尘的设备

    公开(公告)号:US4765809A

    公开(公告)日:1988-08-23

    申请号:US71847

    申请日:1987-07-10

    Abstract: For collection of dust from gases at temperatures up to 900.degree. C. and under presssures up to 20 bars by means of gas-permeable two-dimensional filter elements, an apparatus is proposed which comprises a pressure-resisting cylindrical outer housing, which contains a gas-tight pear-shaped inner housing, which is movably mounted in the outer housing by a means of a heat-insulating carrying structure and is provided with a tubular gas-outlet port and comprises a cambered bottom, which contains cylindrical filter elements. A pressure-confining gas-tight compensator is provided between the tubular gas-outlet port of the inner housing and the outer housing. Because the "pressure-confining" and "supporting" functions are separate, the internal components, which will be subjected to temperatures up to 900.degree. C., can be joined to the pressure-confining wall of the outer housing, which must not be heated above 200.degree. C.

    Abstract translation: 为了通过气体可渗透的二维过滤器元件在高达900℃的温度下收集来自气体的灰尘,并且通过气体可渗透的二维过滤元件在压力下达20巴,提出了一种装置,其包括耐压圆柱形外壳,其包含 气密的梨形内壳,其通过隔热承载结构可移动地安装在外壳中,并且设置有管状气体出口,并且包括具有圆柱形过滤元件的弧形底部。 在内壳体的管状气体出口和外壳之间设置压力限制气密补偿器。 由于“压力限制”和“支撑”功能是分离的,所以将受到高达900℃温度的内部部件可以连接到外壳的压力限制壁,这不能是 加热至200℃以上

    METHOD FOR PRODUCING A GLASS FIBER AND DEVICE
    4.
    发明申请
    METHOD FOR PRODUCING A GLASS FIBER AND DEVICE 有权
    生产玻璃纤维和器件的方法

    公开(公告)号:US20120053043A1

    公开(公告)日:2012-03-01

    申请号:US13319463

    申请日:2010-05-17

    Abstract: A method for producing a glass fiber, through longitudinally drawing a preform in a drawing kiln, wherein cooling the glass fiber is performed in at least three time periods, wherein the glass fiber is exposed to a first time based cooling rate above a crystallization temperature range, to a second time based cooling rate that is greater than the first time based cooling rate within the crystallization temperature range, and to a third time based cooling rate which is smaller than the second time based cooling rate below the crystallization temperature range.

    Abstract translation: 一种制造玻璃纤维的方法,通过在拉制窑中纵向拉伸预成型体,其中在至少三个时间段内进行玻璃纤维的冷却,其中玻璃纤维以高于结晶温度范围的第一次基于时间的冷却速率暴露 至比在结晶温度范围内大于第一时间冷却速率的第二时间冷却速率,以及小于低于结晶温度范围的第二时间基础冷却速率的第三时间冷却速率。

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