公开(公告)号：US4199337A

公开(公告)日：1980-04-22

申请号：US949349

申请日：1978-10-06

Applicant: Adolf R. Asam

Inventor： Adolf R. Asam

IPC: C03B8/00 ,  C03B20/00 ,  C03B37/014 ,  C03B37/018 ,  C03B37/027 ,  C03C13/04 ,  C03C15/00 ,  G02B6/00 ,  G02B6/036 ,  G02B6/44 ,  C03C25/02

CPC classification number: G02B6/03638 ,  C03B37/014 ,  C03B37/018 ,  C03B37/027 ,  C03C13/045 ,  C03C13/046 ,  C03C15/00 ,  G02B6/03622 ,  G02B6/4401 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/31 ,  C03B2203/24

Abstract: A process is disclosed for finishing high-strength multilayer optical preforms capable of being drawn into long optical fibers useful for light-wave communications. The preforms are of the type prepared by sequential chemical-vapor-deposition of the various desired glass layers within a tubular glass substrate that is then collapsed into a solid cylindrical preform comprising a cylindrical light-transmitting core surrounded by a concentric cladding layer and one or more additional layers within the collapsed substrate. In order for the outermost deposited additional layer to constitute a thin high-compression layer on the surface of the completed optical structure, it is necessary first to remove substantially all of the substrate layer from the preform in such a manner as to leave the adjoining high-compression layer intact. This is accomplished by selecting a glass for the substrate layer that is capable of being etched away faster than the high-compression layer, and then using controlled preferential etching to remove the substrate layer without penetrating or damaging the high-compression layer.This method makes it possible to provide a thinner and more effective outer high-compression layer, on the surface of the completed preform, which is of uniform radial thickness regardless of any nonlinearity or non-concentricity of the core, enclosing layers, or substrate layer. An optical fiber drawn from the completed preform will then retain a uniform high-compressive stress in its outer layer that contributes materially to its tensile strength, durability, and fiber life.

Abstract translation: 公开了一种用于整理能够被拉入用于光波通信的长光纤中的高强度多层光学预成型件的方法。 预型件是通过在管状玻璃基板内顺序化学气相沉积各种期望的玻璃层而制备的，预先形成一个固体圆柱形预制件，该圆柱形预制件包括由同心包覆层包围的圆柱形透光芯和一个或多个 塌陷底物内更多的附加层。 为了使最外面沉积的附加层在完成的光学结构的表面上构成薄的高压缩层，首先必须以预定的方式将基本上所有的基底层从预型件上移除，以使得邻近的高度 压缩层完好无损。 这通过选择能够比高压缩层更快蚀刻掉的衬底层的玻璃，然后使用受控的优先蚀刻来去除衬底层而不会侵入或损坏高压缩层来实现。 这种方法使得可以在完成的预成型件的表面上提供更薄和更有效的外部高压缩层，其具有均匀的径向厚度，而与芯，封闭层或基底层的任何非线性或非同心度无关 。 从完成的预制件中拉出的光纤将在其外层中保持均匀的高压缩应力，从而实质上有助于其拉伸强度，耐用性和纤维寿命。

公开(公告)号：US4011006A

公开(公告)日：1977-03-08

申请号：US641651

申请日：1975-12-17

Applicant: James William Fleming, Jr. ,  Raymond Edward Jaeger ,  Thomas John Miller

Inventor： James William Fleming, Jr. ,  Raymond Edward Jaeger ,  Thomas John Miller

IPC: C03B19/10 ,  C03B37/012 ,  C03C1/02 ,  C03C3/06 ,  C03C13/04 ,  C03C3/08 ,  G02B5/14

CPC classification number: C03C3/06 ,  C03B19/1065 ,  C03B37/01291 ,  C03C1/02 ,  C03C13/04 ,  C03B2201/10 ,  C03B2201/31 ,  C03C2201/10 ,  C03C2201/31 ,  C03C2203/10 ,  Y10S501/90 ,  Y10T428/2929

Abstract: High silica content optical glasses, containing more volatile oxides such as GeO.sub.2 and B.sub.2 O.sub.3, are produced by plasma fusion of powders without inordinately high loss of the more volatile constituents. The powders are produced by a process including the heat treatment of intimately mixed materials, which include the glass forming constituents. Small quantities of GeO.sub.2 are included in borosilicate glass to suppress bubble formation. Pairs of glass compositions have been found, with sufficient index of refraction difference to produce guidance in optical transmission lines, while possessing sufficient thermal expansion match to reduce stresses in the line.

公开(公告)号：US3966446A

公开(公告)日：1976-06-29

申请号：US625318

申请日：1975-10-23

Applicant: Stewart Edward Miller

Inventor： Stewart Edward Miller

IPC: C03B37/018 ,  C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  C03C17/02 ,  G02B6/00 ,  C03B37/02

CPC classification number: C03B37/01413 ,  C03C13/04 ,  C03B2201/10 ,  C03B2201/31 ,  C03B2201/42 ,  C03B2203/18 ,  C03B2203/36 ,  C03B2207/60

Abstract: An improved technique for producing optical fibers is disclosed. In this technique the optical fiber preform is fabricated by axial deposition from a direction along the preform axis as opposed to radial deposition from a direction perpendicular to the preform axis. The instant technique does not require a cylindrical mandrel and, consequently, the technique does not require removal of a mandrel and the collapse of a non-solid preform prior to drawing. In addition to these advantages, the technique may be used to form optical fibers with highly resolved longitudinal gradations in index of refraction. The resolution of such gradations when formed using the instant technique is limited only by the deposition rate and the ability to rapidly alter the concentration of the material being deposited.

Abstract translation: 公开了一种用于生产光纤的改进技术。 在这种技术中，光纤预制棒是通过沿着预制棒轴线的方向通过轴向沉积来制造的，而不是从垂直于预制棒轴线的方向的径向沉积。 本技术不需要圆柱形心轴，因此，该技术不需要在拉拔之前去除心轴和非固体预制件的塌陷。 除了这些优点之外，该技术可以用于形成折射率高的分辨率的纵向灰度的光纤。 当使用本技术形成时，这种等级的分辨率仅受沉积速率和快速改变被沉积材料的浓度的能力的限制。

公开(公告)号：US3954431A

公开(公告)日：1976-05-04

申请号：US509652

申请日：1974-09-26

Applicant: James William Fleming, Jr. ,  Raymond Edward Jaeger ,  Thomas John Miller

Inventor： James William Fleming, Jr. ,  Raymond Edward Jaeger ,  Thomas John Miller

IPC: C03B19/01 ,  C03B37/012 ,  C03C1/02 ,  C03C3/00 ,  C03C3/06 ,  C03C3/089 ,  C03C13/04 ,  C03B1/00 ,  C03B23/20

CPC classification number: C03C3/089 ,  C03B19/01 ,  C03B37/01291 ,  C03C1/02 ,  C03C13/04 ,  C03C3/00 ,  C03C3/06 ,  C03B2201/10 ,  C03B2201/31 ,  C03C2201/10 ,  C03C2201/31 ,  C03C2203/10

Abstract: High silica content optical glasses, containing more volatile oxides such as GeO.sub.2 and B.sub.2 O.sub.3, are produced by plasma fusion of powders without inordinately high loss of the more volatile constituents. The powders are produced by a process including the heat treatment of intimately mixed materials, which include the glass forming constituents. Small quantities of GeO.sub.2 are included in borosilicate glass to suppress bubble formation. Pairs of glass compositions have been found, with sufficient index of refraction difference to produce guidance in optical transmission lines, while possessing sufficient thermal expansion match to reduce stresses in the line.

Abstract translation: 含有更多挥发性氧化物如GeO 2和B 2 O 3的高二氧化硅含量的光学玻璃通过粉末的等离子体熔融而没有较高挥发性组分的高损失而产生。 该粉末是通过包括玻璃形成成分在内的紧密混合材料的热处理的方法生产的。 少量的GeO 2被包括在硼硅酸盐玻璃中以抑制气泡形成。 已经发现了一对玻璃组合物，具有足够的折射率差异以在光学传输线中产生引导，同时具有足够的热膨胀匹配以减少线中的应力。

公开(公告)号：USRE28028E

公开(公告)日：1974-06-04

申请号：US28028D

申请日：1973-06-21

IPC: C03B37/018 ,  C03B37/027

CPC classification number: C03B37/01807 ,  C03B37/01853 ,  C03B37/01861 ,  C03B37/01869 ,  C03B37/01892 ,  C03B37/027 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2203/24 ,  C03B2205/16

Abstract: A METHOD OF FORMING AN OPTICAL WAVEGUIDE BY FIRST FORMING A COATING OF GLASS ON THE INSIDE WALL OF A GLASS

TUBE, THE GLASS TUBE AND THE FIRST COATING BEING OF SUBSTANTIALLY SIMILAR MATERIAL. THEREAFTER, A SECOND COATING OF GLASS IS APPLIED TO THE INSIDE WALL OF THE GLASS TUBE OVER THE FIRST COATING, SAID SECOND COATING HAVING A PRESELECTED DIFFERENT INDEX OF REFRACTION FROM THAT OF THE FIRST COATING. THE GLASS TUBE AND COATING COMBINATION IS THEREAFTER DRAWN TO REDUCE THE CROSS-SECTIONAL AREA AND TO COLLAPSE THE SECOND AND INNER COATING OF GLASS TO FORM A FIBER HAVING A SOLID CROSS-SECTIONAL AREA. THE COLLASPSED INNER COATING FORMS THE FIBER CORE AND THE FIRST COATING FORMS THE CLADDING FOR THE FIBER WHILE THE EXTERIOR GLASS TUBE PROVIDES STRUCTURAL STRENGTH FOR THE FIBER.

公开(公告)号：US3737292A

公开(公告)日：1973-06-05

申请号：US3737292D

申请日：1972-01-03

Applicant: CORNING GLASS WORKS

Inventor： KECK D ,  SCHULTZ P ,  ZIMAR F

IPC: C03B37/014 ,  C03B37/018 ,  C03B37/027 ,  C03C25/06

CPC classification number: C03B37/027 ,  C03B37/01413 ,  C03B37/01473 ,  C03B37/018 ,  C03B37/01869 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2203/24 ,  C03B2203/28 ,  C03B2205/16

Abstract: A METHOD OF FORMING AN OPTICAL WAVEGUIDE BY FORMING A FIRST COATING OF GLASS HAVING A PREDETERMINED INDEX OF REFRACTION ON THE OUTSIDE PERIPHERAL WALL SRFACE OF A SUBSTANTIALLY CYLINDRICAL STARTER ROD OR MEMBER. THEREAFTER, A SECOND COATING OF GLASS IS APPLIED TO THE PERIPHERAL OUTSIDE SURFACE OF THE FIRST COATING, SAID SECOND COATING HAVING A PRESELECTED INDEX OF REFRACTION LESS THAN INDEX OF REFRACTION OF THE FIRST COATING. THE STARTER ROD OR MEMBER IS REMOVED FROM THE ASSEMBLY FOLLOWING THE APPLICATION OF EITHER THE FIRST OR SECOND COATING. THE RESULTING SUBSTANTIALLY CYLINDRICAL HOLLOW ASSEMBLY IS HEATED AND DRAWN TO REDUCE THE CORSS-SECTIONAL AREA AND

TO COLLAPSE THE FIRST AND INNER COATING OF GLASS TO FORM A FIBER HAVING A SOLID CROSS-SECTIONAL AREA. THE COLLAPSED FIRST AND INNER COATING FORMS THE FIBER CORE AND THE SECOND COATING FORMS THE CLADDING FOR THE FIBER.

公开(公告)号：US3020165A

公开(公告)日：1962-02-06

申请号：US4050860

申请日：1960-07-05

Applicant: BAUSCH & LOMB

Inventor： KAVIS EARL K

IPC: C03B37/023 ,  C03C13/04

CPC classification number: C03C13/046 ,  C03B37/023 ,  C03B2201/10 ,  C03B2201/30

公开(公告)号：US20180084609A1

公开(公告)日：2018-03-22

申请号：US15700294

申请日：2017-09-11

Applicant: Corning Incorporated

Inventor： Martin Hempstead

IPC: H05B3/00

CPC classification number: H05B3/0033 ,  C03B37/01446 ,  C03B37/01453 ,  C03B2201/10 ,  C03B2201/12

Abstract: An improved process for preheating and doping a preform having a consolidated glass core and a silica soot cladding surrounding core involves waveguiding millimeter wavelength electromagnetic radiation into the preform to cause heating of the preform within the interior via absorption of the electromagnetic radiation by silica in the preform while the preform is exposed to a gas phase dopant.

公开(公告)号：US09840432B2

公开(公告)日：2017-12-12

申请号：US15029322

申请日：2014-10-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： David C. Jarmon

IPC: C03B19/02 ,  B28B1/24 ,  B28B3/02

CPC classification number: C03B19/025 ,  B28B1/24 ,  B28B3/025 ,  C03B19/02 ,  C03B2201/02 ,  C03B2201/10

Abstract: One exemplary embodiment of this disclosure relates to a transfer molding assembly. The assembly includes a die having a molding cavity interconnected with a reservoir. The assembly further includes a heater operable to heat the die, and a load plate configured to move under its own weight to transfer material from the reservoir into the molding cavity.

公开(公告)号：US20170349478A1

公开(公告)日：2017-12-07

申请号：US15686313

申请日：2017-08-25

Applicant: Corning Incorporated

Inventor： Sezhian Annamalai ,  Carlos Alberto Duran ,  Kenneth Edward Hrdina ,  William Rogers Rosch

IPC: C03C3/076 ,  C03B19/14 ,  C03B25/00 ,  C03C23/00 ,  C03B19/12 ,  C03C3/089 ,  C03C3/112 ,  C03C3/06 ,  C03B25/02

CPC classification number: C03C3/076 ,  C03B19/12 ,  C03B19/1453 ,  C03B25/00 ,  C03B25/02 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/42 ,  C03C3/06 ,  C03C3/089 ,  C03C3/112 ,  C03C23/007 ,  C03C2201/10 ,  C03C2201/12 ,  C03C2201/14 ,  C03C2203/52

Abstract: Annealing treatments for modified titania-silica glasses and the glasses produced by the annealing treatments. The annealing treatments include an isothermal hold that facilitates equalization of non-uniformities in fictive temperature caused by non-uniformities in modifier concentration in the glasses. The annealing treatments may also include heating the glass to a higher temperature following the isothermal hold and holding the glass at that temperature for several hours. Glasses produced by the annealing treatments exhibit high spatial uniformity of CTE, CTE slope, and fictive temperature, including in the presence of a spatially non-uniform concentration of modifier.