利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.061 秒)

    Method and apparatus for making a crystal pre-melt
    1.
    发明申请
    Method and apparatus for making a crystal pre-melt 失效
    制造晶体预熔体的方法和装置

    公开(公告)号：US20050092232A1

    公开(公告)日：2005-05-05

    申请号：US10696453

    申请日：2003-10-29

    申请人： Daniel Hawtof ,  Nicholas LeBlond ,  Christopher Thomas

    发明人： Daniel Hawtof ,  Nicholas LeBlond ,  Christopher Thomas

    IPC分类号： C30B11/00 ,  C30B29/12 ,  C30B35/00 ,  C30B9/00 ,  C30B17/00 ,  C30B21/02 ,  C30B28/06

    CPC分类号： C30B29/12 ,  C30B11/00 ,  C30B35/00

    摘要： An apparatus for making a crystal pre-melt includes a hermetically-sealed muffle furnace made of a non-porous refractory material, at least one port for entry and exit of gaseous substance within the muffle furnace, a temperature-controlled zone defined inside the muffle furnace, and a crucible for holding crystal raw material in solid or molten form inside the muffle furnace. The crystal pre-melt is made by disposing crystal raw material in loose powder, pressed powder, granular, or densified form in the temperature-controlled zone, heating the temperature-controlled zone to a treatment temperature that enables reaction between a fluorinating agent and oxides in the crystal raw material, reacting the fluorinating agent with the crystal raw material to produce volatile gases, removing the volatile gases from the muffle furnace, heating the crystal raw material to form a melt, and solidifying the melt to form the crystal pre-melt.

    摘要翻译： 用于制造晶体预熔体的装置包括由无孔耐火材料制成的气密密封马弗炉，至少一个用于马弗炉内的气态物质进出口的端口，限定在马弗炉内的温度控制区 炉，以及用于在马弗炉内保持固体或熔融形式的晶体原料的坩埚。 通过在温度控制区域中将松散粉末，压粉，颗粒状或致密化形式的晶体原料设置在温度控制区域中，将温度控制区域加热至能够使氟化剂和氧化物之间的反应的处理温度 在晶体原料中，使氟化剂与晶体原料反应以产生挥发性气体，从马弗炉中除去挥发性气体，加热晶体原料以形成熔体，并使熔体固化形成晶体预熔体 。

    Method and apparatus for making crystals without a pre-melt step
    2.
    发明申请
    Method and apparatus for making crystals without a pre-melt step 审中-公开
    无预熔融步骤制造晶体的方法和装置

    公开(公告)号：US20050092231A1

    公开(公告)日：2005-05-05

    申请号：US10696125

    申请日：2003-10-29

    申请人： Daniel Hawtof ,  Nicholas LeBlond ,  Christopher Thomas

    发明人： Daniel Hawtof ,  Nicholas LeBlond ,  Christopher Thomas

    IPC分类号： C30B9/00 ,  C30B11/00 ,  C30B17/00 ,  C30B21/02 ,  C30B28/06 ,  C30B29/12

    CPC分类号： C30B11/00 ,  C30B29/12

    摘要： A method of making crystals includes suspending a porous preform made of a crystal raw material in a hermetically-sealed chamber, heating the porous preform to a selected treatment temperature that enables reaction between a fluorinating agent and oxide impurities in the porous preform and reacting the fluorinating agent with the oxide impurities at the selected treatment temperature for a selected time period, filling a crucible in the hermetically-sealed chamber with a melt formed from at least a portion of the porous preform, and progressively moving the melt through a temperature gradient zone defined inside the hermetically-sealed chamber. An apparatus for making crystals includes a hermetically-sealed muffle furnace made of a non-porous refractory material, at least one port for entry and exit of gaseous substance within the muffle furnace, at least two temperature-controlled zones defined inside the muffle furnace, a crystal growth crucible disposed inside the muffle furnace, an actuator operable to translate the crucible along a length of the muffle furnace, and means for suspending a preform inside the muffle furnace.

    摘要翻译： 制造晶体的方法包括将由结晶原料制成的多孔预成型体悬浮在气密密封的室中，将多孔预型体加热到选定的处理温度，使得氟化剂与多孔预型体中的氧化物杂质反应，并使氟化 在所选择的处理温度下将氧化物杂质与所选择的时间段内的氧化物杂质一起，用至少一部分多孔预型体形成的熔体填充密封室中的坩埚，并逐渐移动熔体通过定义的温度梯度区 密封室内。 用于制造晶体的装置包括由无孔耐火材料制成的气密密封马弗炉，至少一个用于马弗炉内的气态物质的进出口，至少两个限定在马弗炉内的温度控制区， 布置在马弗炉内部的晶体生长坩埚，可操作以沿着马弗炉的长度平移坩埚的致动器，以及用于将预制件悬挂在马弗炉内部的装置。

    Method enabling dual pressure control within fiber preform during fiber fabrication
    6.
    发明申请
    Method enabling dual pressure control within fiber preform during fiber fabrication 有权
    在光纤制造期间实现光纤预制棒内的双重压力控制的方法

    公开(公告)号：US20070204656A1

    公开(公告)日：2007-09-06

    申请号：US11366654

    申请日：2006-03-01

    申请人： Michael Gallagher ,  Daniel Hawtof ,  Joseph McCarthy ,  Natesan Venkataraman

    发明人： Michael Gallagher ,  Daniel Hawtof ,  Joseph McCarthy ,  Natesan Venkataraman

    IPC分类号： C03B37/07 ,  C03B37/022 ,  C03B37/15

    CPC分类号： C03B37/02781 ,  C03B2203/42 ,  C03B2205/10

    摘要： A method of fabricating a photonic crystal or photonic band gap optical fiber comprises providing a preform that includes a plurality of holes in an outer diameter, wherein the holes extend from a first end of a preform to a second end of the preform, and forming at least one radially inwardly-extending slot within the preform such that the slot intersects at least some of the holes, wherein the slot does not intersect at least one hole. The method also includes establishing a first pressure in the holes intersected by the slot by introducing the first pressure to the slot, and establishing a second pressure in the at least one hole not intersected by the slot by introducing the second pressure to an end of the at least one hole not intersected by the slot. The method further includes drawing the preform into a fiber while independently controlling the first and second pressures.

    摘要翻译： 一种制造光子晶体或光子带隙光纤的方法包括提供包括多个在外径上的孔的预成型件，其中所述孔从预制件的第一端延伸到预制件的第二端，并且形成在 至少一个径向向内延伸的预制件中的槽，使得狭槽与至少一些孔相交，其中槽不与至少一个孔相交。 该方法还包括通过将第一压力引入到槽中而在与槽相交的孔中建立第一压力，以及通过将第二压力引入到所述槽的一端而在所述至少一个不与槽相交的孔中建立第二压力 至少一个不与槽相交的孔。 该方法还包括将预型件拉制成纤维，同时独立地控制第一和第二压力。