公开(公告)号：US5656056A

公开(公告)日：1997-08-12

申请号：US362661

申请日：1994-12-22

Applicant: Marco Braglia ,  Giuseppe Cocito

Inventor： Marco Braglia ,  Giuseppe Cocito

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  C03B37/12

CPC classification number: C03B37/01228 ,  C03B37/01271 ,  C03B37/02754 ,  C03B2201/82

Abstract: Fluoride glass optical fibers are fabricated by minimizing the number of high-temperature operations. A tube comprising an external layer of a first fluoride glass of composition suitable to form the cladding of the fiber and an internal layer of a second fluoride glass of composition suitable to form the core of the fiber is prepared by a conventional rotational casting technique. Then, the internal layer is thinned by means of chemical etching at ambient temperature until the attainment of a ratio between the volumes of the two layers that corresponds to the ratio between the core and cladding diameters required for a single mode fiber, and the resulting tube is drawn.

Abstract translation: 氟化物玻璃光纤通过最小化高温操作的数量来制造。 一种包含适合于形成纤维包层的组合物的第一氟化物玻璃的外层和适于形成纤维芯的组合物的第二氟化物玻璃的内层的管是通过常规的旋转铸造技术制备的。 然后，通过在环境温度下的化学蚀刻使内层变薄，直到达到两层体积之间的比例对应于单模光纤所需的芯和包层直径之比，并且所得到的管 被绘制

公开(公告)号：US5560759A

公开(公告)日：1996-10-01

申请号：US338926

申请日：1994-11-14

Applicant: Ahmet R. Kortan ,  Robert M. Pafchek

Inventor： Ahmet R. Kortan ,  Robert M. Pafchek

IPC: G02B6/00 ,  C03B37/012 ,  C03C13/04 ,  G02B6/036 ,  G02B6/10

CPC classification number: G02B6/03638 ,  C03B37/01268 ,  C03C13/04 ,  C03C13/042 ,  G02B6/102 ,  C03B2201/82 ,  C03B2203/12 ,  C03B2203/20 ,  C03B2203/24 ,  C03B2203/26 ,  C03B2203/34

Abstract: A method and apparatus are provided for forming a glass preform which can be directly drawn into a single or multi-mode optical fiber. Single or multi-mode fibers drawn from the preforms described herein have high quality core-clad interfaces since the core and cladding materials are not exposed to crystallization temperatures upon the addition of the core material to cladding material.

Abstract translation: 提供了一种用于形成玻璃预制件的方法和装置，其可直接拉入单模或多模光纤。 由本文所述的预成型件拉制的单模或多模纤维具有高质量的芯包层界面，因为在将芯材添加到包层材料时，芯和包层材料不暴露于结晶温度。

公开(公告)号：US5454847A

公开(公告)日：1995-10-03

申请号：US121884

申请日：1993-09-17

Applicant: Charles Jacoboni ,  Brigitte Boulard ,  Olivier Perrot

Inventor： Charles Jacoboni ,  Brigitte Boulard ,  Olivier Perrot

IPC: C23C14/06 ,  C03B8/04 ,  C03B19/14 ,  C03B37/018 ,  C03C3/32 ,  C23C14/10

CPC classification number: C03B37/018 ,  C03B19/14 ,  C03B37/01807 ,  C03C3/325 ,  C23C14/10 ,  C03B2201/82 ,  Y10S65/16

Abstract: A deposition method for vapor deposition of a film of fluorine-containing glass on a substrate in which said substrate is put into contact with fluxs of the vapors of the various constituents of said glass, wherein said vapor fluxs are emitted simultaneously from at least two crucibles, a first crucible containing a host bath and main metal fluorides that constitute said fluorine-containing glass, and at least one second crucible containing dopants constituted by at least one rare earth halide.

Abstract translation: 一种用于在含有玻璃的各种成分的蒸气与所述基板的熔剂接触的基板上蒸镀含氟玻璃膜的沉积方法，其中所述蒸汽通量同时从至少两个坩埚 包含主体浴的第一坩埚和构成所述含氟玻璃的主要金属氟化物，以及至少一个含有由至少一种稀土卤化物构成的掺杂剂的第二坩埚。

公开(公告)号：US5432131A

公开(公告)日：1995-07-11

申请号：US55024

申请日：1993-04-30

Applicant: Takashi Kogo ,  Hiroo Kanamori ,  Masashi Onishi ,  Yoshiaki Miyajima ,  Masataka Nakazawa

Inventor： Takashi Kogo ,  Hiroo Kanamori ,  Masashi Onishi ,  Yoshiaki Miyajima ,  Masataka Nakazawa

IPC: C03B37/012 ,  C03C3/32 ,  C03C13/04 ,  G02B6/00

CPC classification number: C03C3/325 ,  C03B37/01211 ,  C03B37/01268 ,  C03C13/042 ,  C03B2201/82 ,  C03B2203/24 ,  Y10T428/2929 ,  Y10T428/2933 ,  Y10T428/2958 ,  Y10T428/2964

Abstract: Lead-containing fluoride glass comprises 50-70 mol % of ZrF.sub.4, 3-5 mol % of LaF.sub.3, 0.1-3 mol % of YF.sub.3, and 2-15 mol % of NaF and/or LiF and/or CsF, where LaF.sub.3 +YF.sub.3 =4.5-6 mol %, and further comprises lead. An optical fiber comprises a core made of the lead-containing fluoride glass and a cladding surrounding the core. A process for producing an optical fiber comprises forming a base material for a core of the lead-containing fluoride glass, forming a base material for a cladding of fluoride glass containing 30-60 mol % of HfF.sub.4, and drawing the base materials into an optical fiber at a drawing temperature of 315.degree.-340.degree. C.

Abstract translation: 含铅氟化物玻璃包含50-70摩尔％的ZrF 4，3-5摩尔％的LaF 3，0.1-3摩尔％的YF 3和2-15摩尔％的NaF和/或LiF和/或CsF，其中LaF 3 + YF3 = 4.5-6mol％，进一步包含铅。 光纤包括由含铅氟化物玻璃制成的芯和围绕芯的包层。 一种制造光纤的方法包括：形成含铅氟化物玻璃的芯的基材，形成含有30-60摩尔％HfF 4的氟化物玻璃的包层用基材，将该基材拉伸成光学 纤维在315°-340℃的拉伸温度

公开(公告)号：US5256178A

公开(公告)日：1993-10-26

申请号：US15901

申请日：1993-02-10

Applicant: Hartmut Schneider ,  Armin Staudt

Inventor： Hartmut Schneider ,  Armin Staudt

IPC: C03B37/023 ,  C03B37/027 ,  C03B37/025

CPC classification number: C03B37/023 ,  C03B37/027 ,  C03B2201/82 ,  Y10S65/16 ,  Y10S65/90

Abstract: A method for manufacturing optical fibers from halide glass is provided. The method includes the steps of drawing a glass mass into a fiber in a dry gas atmosphere which contains a drying agent. In a further step of the process, an OH band which may still be present can be reduced by treating the fiber with a gaseous drying agent.

Abstract translation: 提供了一种从卤化物玻璃制造光纤的方法。 该方法包括以下步骤：在含有干燥剂的干燥气体气氛中将玻璃物质拉入纤维中。 在该方法的另一步骤中，可以通过用气态干燥剂处理纤维来还原可能存在的OH带。

公开(公告)号：US5226940A

公开(公告)日：1993-07-13

申请号：US895429

申请日：1992-06-05

Applicant: Hartmut Schneider ,  Armin Staudt

Inventor： Hartmut Schneider ,  Armin Staudt

IPC: C03B37/023 ,  C03B37/027

CPC classification number: C03B37/027 ,  C03B37/023 ,  C03B2201/82 ,  Y02P40/57 ,  Y10S65/15 ,  Y10S65/16 ,  Y10S65/90

Abstract: A process for producing optical fibers of high tensile strength, wherein the fiber is pulled from a glass mass of halide glass and includes surrounding the fiber and mass with a dry gas atmosphere containing a drying agent which reacts with moisture and this dry gas atmosphere includes fluorine-containing agents, in particular NF.sub.3, as the drying agent.

Abstract translation: 一种制造高拉伸强度的光纤的方法，其中将纤维从玻璃块的卤化物玻璃中拉出，并且包括用含有与水分反应的干燥剂的干燥气体气氛包围纤维和物料，该干燥气体气氛包括氟 作为干燥剂，特别是NF3。

公开(公告)号：US5100449A

公开(公告)日：1992-03-31

申请号：US568229

申请日：1990-08-16

Applicant: Lauren K. Cornelius ,  Paul A. Tick

Inventor： Lauren K. Cornelius ,  Paul A. Tick

IPC: C03B15/02 ,  C03B15/14 ,  C03B18/00 ,  C03B18/02 ,  C03B23/037 ,  C03B23/047 ,  C03B37/023 ,  C03B37/025 ,  C03B37/027 ,  C03B37/029 ,  G02B6/00

CPC classification number: C03B18/02 ,  C03B15/02 ,  C03B15/14 ,  C03B18/00 ,  C03B23/037 ,  C03B23/047 ,  C03B37/023 ,  C03B37/027 ,  C03B37/029 ,  C03B2201/82 ,  C03B2201/84 ,  C03B2201/86 ,  C03B2205/02 ,  C03B2205/64 ,  C03B2205/69

Abstract: Disclosed is a method and apparatus for drawing an elongated glass article such as a fiber optic device. The article is drawn upwardly from a source through the surface of a quantity of molten metal having a vertical temperature gradient. The source can be an elongated solid glass preform that is vertically positioned within the molten metal such that the temperature of that portion of the molten metal adjacent the upper end region is sufficiently high to heat that region to drawing temperature. The upper end region is pulled to form a tapered root, continued pulling resulting in the formation of an elongated article from the small diameter root end. The relative position of the root is maintained with respect to the surface of the molten metal during the drawing operation. Alternatively, the glass can be drawn from an orifice located within the molten metal.The apparatus includes container means for supporting the molten metal, and external or internal means for heating and/or cooling portions of the molten metal. The container can also be provided with baffle means for dividing the container into a plurality of chambers.

公开(公告)号：US4898603A

公开(公告)日：1990-02-06

申请号：US223185

申请日：1988-07-25

Applicant: Joseph J. Hutta

Inventor： Joseph J. Hutta

IPC: C03B37/023 ,  C03C13/04

CPC classification number: C03B37/023 ,  C03C13/042 ,  C03B2201/82 ,  C03B2205/02 ,  Y10S65/16

Abstract: A halide glass core fiber is clad by providing two melts that selectively join to form the molten clad fiber in a temperature range from 580.degree. C. to 600.degree. C. A separate heating means controls the fiber melt at the die nozzle. Because of the low viscosity and the narrow proto congelation temperature zone, the clad fiber is extruded and drawn in the vertical direction counter the effect of gravity.

Abstract translation: 通过在580℃至600℃的温度范围内提供选择性地接合以形成熔融包覆纤维的两种熔体来包覆卤化物玻璃芯纤维。单独的加热装置控制在模头喷嘴处的纤维熔体。 由于低粘度和狭窄的原始凝结温度区，包层纤维在垂直方向上被挤出和拉伸以抵抗重力的影响。

公开(公告)号：US4885019A

公开(公告)日：1989-12-05

申请号：US149458

申请日：1988-01-28

Applicant: Joseph J. Hutta

Inventor： Joseph J. Hutta

IPC: C03B5/02 ,  C03B37/012 ,  C03C3/32

CPC classification number: C03B5/021 ,  C03B37/01265 ,  C03C3/325 ,  C03B2201/82 ,  Y02P40/52 ,  Y10S65/15

Abstract: Heavy metal fluoride glasses are made by a process that requires high purity fluoride constituent compounds fluorinated oxides, or premelted glass cullet. The charge is placed in an enclosed furnace chamber having the ability of atmosphere control, heat control and position control of the charge. In particular, an inert, or nonreactive atmosphere or air is used in the furnace chamber as well as an oxygen-scavenging metal therein. The oxygen-scavenging metal at the high temperature produces a controlled oxygen partial pressure so that the air is essentially inert and non-reactive although the presence of a slightly oxidizing atmosphere is still required to produce the glass. The charge is rapidly raised to its fusion temperature and held at the temperature for a short time in proximity to an oxygen-scavenging material. The charge is immediately removed from the heating source and quickly cooled through the critical crystallization region. The total heating and cooling time being less than one hour. The HMFG or (Zr or Hf)F.sub.4 - BaF.sub.2 - LaF.sub.3 - AlF.sub.2 consistently exhibits high optical homogeneity and no absorption due to carbon dioxide along with very reproducible hardness, thermal parameters, and UV and IR edge absorption behavior.

Abstract translation: 重金属氟化物玻璃是通过一种需要高纯度氟化物成分化合物氟化氧化物或预熔玻璃碎玻璃的方法制成的。 将电荷放置在具有气体控制，热控制和电荷位置控制能力的封闭炉室中。 特别地，在炉室中使用惰性或非反应性气体或空气以及其中的除氧金属。 在高温下的除氧金属产生受控的氧分压，使得空气基本上是惰性和非反应性的，尽管仍然需要存在稍微氧化的气氛来生产玻璃。 电荷迅速升高到其熔融温度，并在氧气清除材料附近的温度下保持短时间。 立即从加热源中取出电荷并迅速通过临界结晶区域冷却。 总加热和冷却时间少于1小时。 HMFG或（Zr或Hf）F4-BaF2-LaF3-AlF2始终表现出高的光学均匀性，并且由于二氧化碳而具有非常可重现的硬度，热参数和UV和IR边缘吸收行为的吸收。

公开(公告)号：US4848997A

公开(公告)日：1989-07-18

申请号：US155055

申请日：1988-04-05

Applicant: Paul W. France ,  John R. Williams ,  Steven F. Carter

Inventor： Paul W. France ,  John R. Williams ,  Steven F. Carter

IPC: C03B5/00 ,  C03B5/08 ,  C03B5/225 ,  C03B37/014 ,  C03C3/32 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02

CPC classification number: C03C3/325 ,  C03B5/08 ,  C03B5/225 ,  C03C13/042 ,  C03B2201/82 ,  Y10S501/904 ,  Y10S65/16

Abstract: A process for treating a halide, e.g. fluoride, glass composition, characterized by contacting a melt of the composition (3) with dry oxygen (6). Oxygen, simply on contact with a fluoride glass melt, converts transition metals, e.g. from Fe(II) to Fe(III), from one stable state to another and thereby reduces loss at transmission wavelengths in optical fibre, e.g. the loss at 2.6 .mu.m attributabel to Fe(II).

Abstract translation: 一种处理卤化物的方法，例如 氟化物，玻璃组合物，其特征在于使组合物（3）的熔体与干氧（6）接触。 氧气，简单地与氟化物玻璃熔体接触，转化过渡金属，例如。 从Fe（II）到Fe（III），从一个稳定状态到另一个稳定状态，从而减少光纤中的透射波长的损耗。 损失2.6亩，归属于Fe（II）。