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    Method of manufacturing a monomode fluoride optical fiber, and an optical amplifier using such a fiber
    2.
    发明授权
    Method of manufacturing a monomode fluoride optical fiber, and an optical amplifier using such a fiber 失效
    单模氟化物光纤的制造方法以及使用这种纤维的光放大器

    公开(公告)号：US06626011B2

    公开(公告)日：2003-09-30

    申请号：US09068540

    申请日：1998-05-13

    申请人： Frédéric Chiquet ,  Marylise Le Thuaut ,  Jean-Jacques Girard ,  Pascal Baniel

    发明人： Frédéric Chiquet ,  Marylise Le Thuaut ,  Jean-Jacques Girard ,  Pascal Baniel

    IPC分类号： C03B37027

    CPC分类号： C03B37/02754 ,  C03B37/01211 ,  C03B2201/82 ,  C03B2203/24 ,  C03B2205/14 ,  C03B2205/16 ,  C03C13/042

    摘要： The invention provides a monomode optical fiber and a monomode preform (2) having a mother preform (22) housed in an outer sleeve tube (20). It is characterized in that it also includes an intermediate tube (21) between the mother preform (22) and the outer tube (20), the intermediate tube (21) possessing viscosity at fiber-drawing temperature which is less than the viscosity(ies) at fiber-drawing temperature of the mother preform (22) and of the outer tube (20). The invention also provides a method of manufacturing a monomode optical fiber. The fiber has a core that is better centered and less deformed than in the prior art. An application of the invention lies in making an optical amplifier.

    摘要翻译： 本发明提供一种单模光纤和一个单模预制件（2），其具有容纳在外套管（20）中的母母（22）。 其特征在于，它还包括在母体预制件（22）和外管（20）之间的中间管（21），中间管（21）在纤维拉伸温度下具有小于粘度的粘度 ）在母体预制件（22）和外管（20）的纤维拉伸温度下。 本发明还提供了制造单模光纤的方法。 纤维具有比现有技术更好的中心并且变形较小的芯。 本发明的应用在于制造光放大器。

    Method of manufacturing an optical fiber preform by collapsing a tube onto a rod
    3.
    发明授权
    Method of manufacturing an optical fiber preform by collapsing a tube onto a rod 有权
    通过将管塌陷到杆上来制造光纤预制件的方法

    公开(公告)号：US06584808B1

    公开(公告)日：2003-07-01

    申请号：US09505672

    申请日：2000-02-17

    申请人： Giacomo Stefano Roba ,  Cheryl Jane Garnham ,  Anna Zilnyk

    发明人： Giacomo Stefano Roba ,  Cheryl Jane Garnham ,  Anna Zilnyk

    IPC分类号： C03B37027

    CPC分类号： C03B37/02754 ,  C03B37/01211 ,  C03B37/01248 ,  C03B37/0126 ,  C03B37/02736 ,  C03B2205/14 ,  C03B2205/16

    摘要： Optical fibers are produced by means of a direct sleeving technique that allows the sintering and collapsing of the outer jacket tube onto the inner core rod to be achieved directly during the drawing phase of optical fiber manufacture. In the course of the optical fiber manufacturing process, either a mechanical guide holding a sleeving tube concentrically around an annular gap and core rod or a preform having an enclosed annular gap/cavity are mounted in a drawing tower. A vacuum may be maintained in the annular gap/cavity of this assembly. A heat source is then applied to one end of the preform/assembly such that the extreme end of the tube is collapsed onto the core as fiber is drawn in a controlled manner. This single-step process allows to speed up the sleeving process, without introducing possible asymetries in the final preform and in the fibers drawn therefrom.

    摘要翻译： 光纤通过直接套管技术制造，其允许外套管烧结和塌缩到内芯棒上，以在光纤制造的拉制阶段期间直接实现。 在光纤制造工艺的过程中，将一个将环形间隙同心地套在套管上的机械引导件和具有封闭的环形间隙/空腔的芯棒或预制件安装在拉伸塔中。 可以在该组件的环形间隙/空腔中保持真空。 然后将热源施加到预成型件/组件的一端，使得当以受控的方式拉制纤维时，管的最末端被折叠到芯上。 这种单步过程允许加速套管过程，而不会在最终预成型件和从其中抽出的纤维中引入可能的不对称。

    Process for drawing optical fiber from a multiple crucible apparatus with a thermal gradient
    5.
    发明授权
    Process for drawing optical fiber from a multiple crucible apparatus with a thermal gradient 失效
    从具有热梯度的多坩埚装置中拉制光纤的工艺

    公开(公告)号：US06550279B1

    公开(公告)日：2003-04-22

    申请号：US09654549

    申请日：2000-09-01

    申请人： James G. Anderson ,  Ernest E. Brand ,  Adam J. Ellison ,  Jackson P. Trentelman

    发明人： James G. Anderson ,  Ernest E. Brand ,  Adam J. Ellison ,  Jackson P. Trentelman

    IPC分类号： C03B37027

    CPC分类号： C03B37/023 ,  C03B2201/30 ,  C03C13/046

    摘要： The disclosed invention includes a method of making an optical fiber drawn from a multiple crucible. The method includes moving a first crucible of the multiple crucible relative to a second crucible of the multiple crucible. The invention also includes minimizing core and cladding diffusion. A tip of the first crucible is disposed axially above a tip of the second crucible by a preselected distance. The invention further includes the ability to alter a diameter of the core of the fiber. A differential pressure is applied to the first crucible. A positive differential pressure is applied to increase the core diameter. A negative differential pressure is applied to decrease the core diameter. Furthermore, the invention includes drawing the fiber under non-isothermal conditions; there is a thermal gradient of at least 10° C./m between the two tips.

    摘要翻译： 所公开的发明包括制造从多个坩埚拉制的光纤的方法。 该方法包括相对于多个坩埚的第二坩埚移动多个坩埚的第一坩埚。 本发明还包括使芯和包层扩散最小化。 第一坩埚的尖端以预定的距离轴向设置在第二坩埚的尖端上方。 本发明还包括改变纤维芯的直径的能力。 对第一坩埚施加差压。 施加正的差压以增加芯径。 施加负差压以减小芯径。 此外，本发明包括在非等温条件下拉伸纤维; 在两个尖端之间存在至少10℃/ m的热梯度。

    Making a photosensitive fiber with collapse of a MCVD tube that is in a small positive pressure atmosphere
    7.
    发明授权
    Making a photosensitive fiber with collapse of a MCVD tube that is in a small positive pressure atmosphere 失效
    制造感光纤维，其处于小正压气氛中的MCVD管的塌陷

    公开(公告)号：US06705123B2

    公开(公告)日：2004-03-16

    申请号：US09821474

    申请日：2001-03-30

    申请人： Monica K. Davis ,  Gang Qi

    发明人： Monica K. Davis ,  Gang Qi

    IPC分类号： C03B37027

    CPC分类号： C03B37/027 ,  C03B37/01869 ,  C03B2201/10 ,  C03B2201/31 ,  C03B2205/40 ,  G02B6/02114

    摘要： The present invention includes a method of making a preform for an enhanced photosensitive fiber comprising depositing successive layers of optical material the inside a tube using modified chemical vapor deposition, and collapsing the layers of optical material in a reducing atmosphere with a positive pressure. The present invention also includes a method of making an enhanced photosensitive fiber comprising making a preform using modified chemical vapor deposition wherein the preform is collapsed in a reducing atmosphere with a positive pressure and drawing the preform into a fiber.

    摘要翻译： 本发明包括一种制备用于增强感光纤维的预成型体的方法，包括使用改进的化学气相沉积在管内部沉积连续的光学材料层，并在正压下还原气氛中折叠光学材料层。 本发明还包括一种制备增强感光纤维的方法，其包括使用改进的化学气相沉积法制备预成型体，其中预成型件在正压的还原气氛中塌陷并将预成型件拉伸成纤维。

    Method of making an optical fiber with an improved UV-curable resin
    8.
    发明授权
    Method of making an optical fiber with an improved UV-curable resin 有权
    制备具有改进的UV固化树脂的光纤的方法

    公开(公告)号：US06530243B1

    公开(公告)日：2003-03-11

    申请号：US09659831

    申请日：2000-09-11

    申请人： Kazuya Kuwahara ,  Ichiro Tsuchiya ,  Yasuhiro Naganuma

    发明人： Kazuya Kuwahara ,  Ichiro Tsuchiya ,  Yasuhiro Naganuma

    IPC分类号： C03B37027

    CPC分类号： C03B37/027 ,  C03B37/032 ,  C03B2205/40 ,  C03C25/12 ,  Y02P40/57

    摘要： A method of drawing an optical fiber which can improve the efficiency in manufacture without deforming resin coatings is provided. The method of drawing an optical fiber in accordance with the present invention is a method in which an optical fiber yielding an outside diameter of 300 to 600 &mgr;m after a resin coating is formed is drawn at a drawing speed of at least 50 m/min, wherein the optical fiber is drawn in a state where the pass line length zp from the outlet of curing furnace to the entrance part of capstan satisfies the following expression (1): z p ≥ - ρ ⁢   ⁢ C p _ · d 2 4 · d 2 2 - d 1 2 A · V f · ln ⁡ [ ( T g - 10 ) - T o T s - T o ] ( 1 ) where Tg is the glass transition temperature of the coating resin [° C.]; TS is the fiber temperature [=TF(0)] at z=0 [° C.]; TO is the room temperature [° C.]; {overscore (&rgr;Cp)} is the average heat capacity of glass and resin [J/(cm3·° C.)]; d1 is the radius before coating [cm]; d2 is the radius after coating [cm]; A is a given constant within the range of 1.5×10−6 to 4.5×10−6 [J/(sec·° C.)]; and Vf is the drawing speed [cm/sec].

    摘要翻译： 提供一种拉伸光纤的方法，其可以在不使树脂涂层变形的情况下提高制造效率。 根据本发明的拉伸光纤的方法是在形成树脂涂层后产生300-600μm的外径的光纤以至少50m / min的拉伸速度被拉伸， 其中在从固化炉的出口到主导轴的入口部分的通过线路长度zp满足以下表达式（1）的情况下拉制光纤：其中T g是涂层树脂的玻璃化转变温度[℃] ; TS是z = 0 [℃]时的纤维温度[= TF（0）]; TO是室温[℃]; {overscore（rhoCp是玻璃和树脂的平均热容量[J / （cm 3·℃）]; d1是涂布前的半径[cm]; d2是涂布后的半径[cm]; A是在1.5×10 -6至4.5×10 -6 [J / （sec。°C）]; vf是拉伸速度[cm / sec]。

    Method of making a glass fiber preform with adjusting a spacing while increasing acceleration of a starting glass powder
    10.
    发明授权
    Method of making a glass fiber preform with adjusting a spacing while increasing acceleration of a starting glass powder 失效
    制备玻璃纤维预成型件的方法，其中增加起始玻璃粉末的加速度的同时调节间隔

    公开(公告)号：US06202447B1

    公开(公告)日：2001-03-20

    申请号：US09070871

    申请日：1998-05-01

    申请人： Alain Drouart ,  Benoît Gouez ,  Pierre Ripoche

    发明人： Alain Drouart ,  Benoît Gouez ,  Pierre Ripoche

    IPC分类号： C03B37027

    CPC分类号： C03B37/01291

    摘要： The invention relates to manufacturing glass fiber preforms. It relates to a method comprising rotating preform about its own axis, and displacing a plasma torch in translation relative to the preform in a direction parallel to the axis of the preform, the axes of the flame and of the preform and being offset by a certain distance, and then inserting glass powder into the plasma flame under gravity. According to the invention, the glass powder is accelerated before penetrating into the plasma flame by means of an accelerator gas, and the offset distance between the axes is reduced with increasing acceleration of the powder. The invention is applicable to manufacturing glass fibers, and in particular optical fibers.

    摘要翻译： 本发明涉及制造玻璃纤维预制件。 本发明涉及一种方法，包括围绕其自身的轴线旋转预制件，以及使等离子体焰炬在平行于预成型件的轴线，火焰和预成型件的轴线方向相对于预成型件平移的位置移动，并被一定的 距离，然后在重力下将玻璃粉末插入等离子体火焰。 根据本发明，玻璃粉末在通过加速剂气体渗入等离子火焰之前被加速，并且随着粉末的加速度的增加，轴之间的偏移距离减小。 本发明适用于制造玻璃纤维，特别是光纤。