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    Method of manufacturing optical fibre preforms
    115.
    发明授权
    Method of manufacturing optical fibre preforms 失效
    光纤预制棒的制造方法

    公开(公告)号：US4165224A

    公开(公告)日：1979-08-21

    申请号：US888050

    申请日：1978-03-17

    Applicant: John Irven ,  Andrew P. Harrison

    Inventor： John Irven ,  Andrew P. Harrison

    IPC: C03B37/018 ,  G02B6/00 ,  C03B37/02 ,  C03C25/02

    CPC classification number: C03B37/01853 ,  C03B37/01861 ,  C03B2201/06 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/22

    Abstract: In the manufacture of silica optical fibers a tube having an internal coating of a volatile dopant is locally heated by a hot zone repeatedly traversed along its length to promote shrinkage and finally collapse of the tube bore. During the shrinkage prior to the final collapse traversal a gas flow of oxygen and a halide of the volatile dopant is maintained through the tube in order firstly to provide a small overpressure to ensure circularity in the shrinkage and secondly to compensate for the tendency for dopant to be lost by volatilization.

    Abstract translation: 在二氧化硅光纤的制造中，具有挥发性掺杂剂的内部涂层的管通过沿其长度重复穿过的热区域局部加热，以促进管孔的收缩并最终塌缩。 在最终塌缩过程之前的收缩期间，通过管保持氧气和挥发性掺杂剂的卤化物的气流，以便首先提供小的过压以确保收缩的圆形度，其次补偿掺杂剂的倾向 被挥发失去。

    Method of drawing glass optical waveguides
    116.
    发明授权
    Method of drawing glass optical waveguides 失效
    绘制玻璃光波导的方法

    公开(公告)号：US4157906A

    公开(公告)日：1979-06-12

    申请号：US879154

    申请日：1978-02-21

    Applicant: Alan C. Bailey

    Inventor： Alan C. Bailey

    IPC: C03B37/018 ,  C03B8/00 ,  C03B20/00 ,  C03B37/014 ,  C03B37/027 ,  G02B6/00 ,  C03B37/00

    CPC classification number: C03B37/027 ,  C03B37/01446 ,  C03B37/01486 ,  C03B37/02736 ,  C03B2201/06 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/42 ,  Y10S65/90

    Abstract: A method of making glass optical waveguides by the flame hydrolysis technique. Particles of glass soot produced by flame hydrolysis are deposited on the outside surface of a mandrel to form a porous preform. The soot particles closer to the mandrel have a refractive index greater than that of the soot disposed toward the outer surface of the preform. The mandrel is removed and the resultant hollow soot preform is supported in a draw furnace through which a helium-rich gas flows. The preform is heated to a temperature sufficient to cause said soot to consolidate and simultaneously permit an optical waveguide filament to be drawn therefrom.

    Abstract translation: 通过火焰水解技术制造玻璃光波导的方法。 通过火焰水解产生的玻璃烟炱颗粒沉积在心轴的外表面上以形成多孔预制件。 靠近心轴的烟灰颗粒的折射率大于朝向预成型体的外表面设置的烟灰的折射率。 将心轴移除，并将得到的空心烟炱预制件支撑在富氦气流经的拉制炉中。 将预成型件加热到足以使所述烟灰固结并同时允许从其中拉出光波导细丝的温度。

    Heat treating optical waveguides for oh ion removal
    117.
    发明授权
    Heat treating optical waveguides for oh ion removal 失效
    用于离子去除的热处理光波导

    公开(公告)号：US3782914A

    公开(公告)日：1974-01-01

    申请号：US3782914D

    申请日：1972-03-30

    Applicant: CORNING GLASS WORKS

    Inventor： DE LUCA R ,  KECK D ,  MAURER R

    IPC: C03B37/027 ,  C03C13/04 ,  C03C25/00 ,  C03C15/00 ,  C03C25/02

    CPC classification number: C03B37/027 ,  C03B2201/06 ,  C03B2201/42 ,  C03B2205/16 ,  C03C13/045 ,  C03C25/002

    Abstract: OPTICAL WAVEGUIDES INCLUDE A CORE OF DOPED SIO2 AND A CLADDING OF PURE SIO2 OR DOPED SIO2. THE DOPANT, WHICH IS AN OXIDE OF A MULTIVALENT ELEMENT, BECOMES CHEMICALLY REDUCED DURING FABRICATION WHICH USUALLY INCLUDES HEATING THE WAVEGUIDE SO THAT IT CAN BE DRAWN. FOR EXAMPLE, TITANIUM DIOXIDE, A COMMONLY USED DOPANT, HAS TI+4 IONS WHICH ARE REDUCED TO TI+3 IONS DURING THE FABRICATION OF THE WAVEGUIDES. THESE REDUCED IONS INCREASE THE ATTENUATION OF THE WAVEGUIDE. FOR EXAMPLE, REDUCED TITANIUM DIOXIDE IS BROWN. IT ABSORBS LIGHT IN THE BLUE REGION AND THE AMOUNT OF TI+3 IONS IN THE GLASS MUST BE QUITE LOW IN ORDER TO GET THE DESIRED WAVEGUIDE TRANSMISSION PROPERTIES. THE REDUCED MULTIVALENT ELEMENT ION ATTENUATION IS MINIMIZED BY HEAT TREATING THE WAVEGUIDE FIBER AT TEMPERATURES IN THE RANGE OF APPROXIMATELY 800 TO 1,000*C. FOR TIMES OF APPROXIMATELY SIX HOURS OR LESS. THE REDUCED MULTIVALENT ION IS OXIDIZED WITH HYDROXYL IONS DELIBERATELY RETAINED IN THE GLASS AND WHICH SERVE AS THE OXIDIZING AGENT.

    METHOD AND APPARATUS FOR PRODUCING AN OPTICAL FIBER WITH LOW FICTIVE TEMPERATURE AND OPTICAL FIBER SO OBTAINED
    118.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING AN OPTICAL FIBER WITH LOW FICTIVE TEMPERATURE AND OPTICAL FIBER SO OBTAINED 审中-公开
    用于制造具有低温度和光纤的光纤的方法和装置

    公开(公告)号：WO2017044543A1

    公开(公告)日：2017-03-16

    申请号：PCT/US2016/050644

    申请日：2016-09-08

    Applicant: CORNING INCORPORATED

    Inventor： BOOKBINDER, Dana Craig ,  LI, Ming-Jun ,  REDING, Bruce Warren ,  TANDON, Pushkar

    IPC: C03B37/027 ,  C03B37/029

    CPC classification number: C03B37/029 ,  C03B37/02727 ,  C03B2201/02 ,  C03B2201/06 ,  C03B2205/55 ,  C03B2205/56

    Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.

    Abstract translation: 提供具有低虚拟温度的光纤以及用于制造光纤的系统和方法。 该系统包括一个再加热阶段，该加热阶段通过将玻璃结构松弛和/或将玻璃推向更接近平衡的状态，将纤维沿着加工路径加热至足以降低纤维的假想温度的温度。 将纤维从预成型件中拉出，沿着工艺路径输送，冷却并随后再加热，以增加纤维暴露于有助于降低纤维的假想温度的温度。 工艺路径可以包括多个再加热阶段以及一个或多个纤维转向装置。

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