公开(公告)号：US5642454A

公开(公告)日：1997-06-24

申请号：US573672

申请日：1995-12-18

Applicant: Nonna Kopylov ,  Ahmet Refik Kortan

Inventor： Nonna Kopylov ,  Ahmet Refik Kortan

IPC: G02B6/00 ,  C03B37/012 ,  C03C13/04 ,  G02B6/16

CPC classification number: C03B37/01265 ,  C03B37/01274 ,  C03B2201/10 ,  C03B2201/62 ,  C03B2201/82 ,  C03B2201/84 ,  C03B2201/86 ,  C03B2203/12 ,  C03B2203/22 ,  C03B2203/24 ,  C03B2205/02

Abstract: A method and apparatus are provided for drawing a self-aligned core fiber free of surface contamination and inserting the core fiber into a cladding material to make an optical fiber preform. Single or multi-mode optical fibers having high quality core-clad interfaces can be directly drawn from the preforms described herein.

Abstract translation: 提供了一种方法和装置，用于绘制不受表面污染的自对准芯纤维，并将芯纤维插入包层材料中以制造光纤预制件。 具有高质量芯包层界面的单模或多模光纤可直接从本文所述的预成型件中拉出。

公开(公告)号：US5573571A

公开(公告)日：1996-11-12

申请号：US347978

申请日：1994-12-01

Applicant: Nonna Kopylov ,  Ahmet R. Kortan

Inventor： Nonna Kopylov ,  Ahmet R. Kortan

IPC: G02B6/00 ,  C03B37/012 ,  C03C13/04 ,  C03B37/02

CPC classification number: C03B37/01265 ,  C03B37/01274 ,  C03B2201/10 ,  C03B2201/62 ,  C03B2201/82 ,  C03B2201/84 ,  C03B2201/86 ,  C03B2203/12 ,  C03B2203/22 ,  C03B2203/24 ,  C03B2205/02

Abstract: A method and apparatus are provided for drawing a self-aligned core fiber free of surface contamination and inserting the core fiber into a cladding material to make an optical fiber preform. Single or multi-mode optical fibers having high quality core-clad interfaces can be directly drawn from the preforms described herein.

Abstract translation: 提供了一种方法和装置，用于绘制不受表面污染的自对准芯纤维，并将芯纤维插入包层材料中以制造光纤预制件。 具有高质量芯包层界面的单模或多模光纤可直接从本文所述的预成型件中拉出。

公开(公告)号：US5160521A

公开(公告)日：1992-11-03

申请号：US718705

申请日：1991-06-21

Applicant: Danh C. Tran

Inventor： Danh C. Tran

IPC: C03B37/012 ,  C03C13/04

CPC classification number: C03C13/043 ,  C03B37/01268 ,  C03B37/01271 ,  C03C13/042 ,  C03B2201/82 ,  C03B2201/86 ,  Y10S65/15 ,  Y10S65/16

Abstract: A method for fabricating defect-free optical fiber preforms without light scattering defects such as core-clad interface bubbles, core-clad crystalline inclusions and core glass crystals involves first forming a cladding glass shell preferably by rotational casting, then separately melting core glass inside a cylindrical crucible and quenching using metallic quenching blocks to prevent crystal formation in the core glass, next heating the core containing crucible to the core glass softening point and also heating the cladding tube containing mold to the glass transition temperature of the cladding glass, then placing the cladding tube containing mold inside the core glass crucible and pushing it downwardly with high pressure so that the softened core glass is forced into the cladding glass tube, and finally the preform is annealed to remove thermal stress. Subsequently, the preform is drawn into optical fibers using conventional technology.

Abstract translation: 首先，通过旋转铸造来首先形成包层玻璃壳，然后将芯玻璃内部分别熔融，然后将核心玻璃分别熔融 使用金属淬火块进行淬火，以防止芯玻璃中的晶体形成，接着将含芯坩埚的芯体加热到芯玻璃软化点，并将含有模具的包层管加热到包层玻璃的玻璃化转变温度，然后将 在芯玻璃坩埚内装有包覆模具，并以高压将其向下推压，使得软化的芯玻璃被迫进入包层玻璃管，最后对预制件进行退火以去除热应力。 随后，使用常规技术将预成型件拉入光纤。

公开(公告)号：US5145508A

公开(公告)日：1992-09-08

申请号：US684070

申请日：1991-03-11

Applicant: Kazuo Fujiura ,  Yasutake Ohishi ,  Michiya Fujiki ,  Terutoshi Kanamori ,  Shiro Takahashi

Inventor： Kazuo Fujiura ,  Yasutake Ohishi ,  Michiya Fujiki ,  Terutoshi Kanamori ,  Shiro Takahashi

IPC: C03B19/14 ,  C03B37/018 ,  C03C1/00 ,  C03C3/32 ,  C03C13/04

CPC classification number: C03B37/01861 ,  C03B19/1415 ,  C03B19/1476 ,  C03B37/01807 ,  C03B37/01815 ,  C03C1/00 ,  C03C13/042 ,  C03C3/325 ,  C03B2201/82 ,  C03B2207/30 ,  C03B2207/81 ,  C03B2207/90 ,  Y10S65/16

Abstract: A method for preparing a homogenous fluoride glass containing high purity BaF.sub.2 through the CVD process using a gaseous mixture containing a barium .beta.-diketonate complex service as a first starting material and represented by the following general formula (1) of: ##STR1## where (i) R and R' are each --C(CH.sub.3).sub.3 ; or (ii) R is CH.sub.2 CH.sub.2 CH.sub.3 and R' is --C(CH.sub.3).sub.3 ; or (iii) R and R' are each CF.sub.3 ;a gaseous or vaporizable compound of the metallic element constituting said fluoride glass, the gaseous or vaporizable compound serving as a second starting material; and a fluorine-containing gas serving as fluorinating agent. Further provided is a process for preparing a perform for a fluoride optical fiber which is low in transmission loss, by depositing the fluoride glass over the interior wall of a cylindrical tube or the wall of rod-like glass substrate through the CVD process following by collapsing.

Abstract translation: 一种通过CVD法制备含有高纯度BaF2的均匀氟化物玻璃的方法，该方法使用含有β-二酮化合物复合物的气体混合物作为第一起始原料并由以下通式（1）表示： ）其中（i）R和R'各自为-C（CH 3）3; 或（ii）R是CH 2 CH 2 CH 3，R'是-C（CH 3）3; 或（iii）R和R'各自为CF 3; 构成所述氟化物玻璃的金属元素的气态或可汽化化合物，作为第二原料的气态或可汽化化合物; 和作为氟化剂的含氟气体。 另外提供了一种通过CVD法将氟化物玻璃沉积在圆柱形管的内壁或棒状玻璃基板的壁上，通过沉积氟化物玻璃来制备传输损耗低的氟化物光纤的方法 。

公开(公告)号：US5106400A

公开(公告)日：1992-04-21

申请号：US580161

申请日：1990-09-10

Applicant: Paul A. Tick

Inventor： Paul A. Tick

IPC: C03B37/016 ,  C03B37/012 ,  G02B6/00

CPC classification number: C03B37/01268 ,  C03B2201/82 ,  C03B2203/34

Abstract: Disclosed is a method of forming a glass preform from core and cladding glasses having low liquidus viscosities and narrow working ranges. A tube of liquid core glass is vertically situated in a vessel of liquid cladding glass. The tube extends to the bottom of the vessel where there is a stopper for preventing leakage of core glass. While both core and cladding glasses are at a temperature just above the liquidus temperature, the vessel is lowered into a coolant bath, thereby causing core glass to flow into the region vacated by the tube. The rate of withdrawing the tube from the vessel is sufficiently slow to provide laminar flow and yet fast enough to permit the resultant liquid core/clad composite to freeze before mixing occurs.

公开(公告)号：US5071460A

公开(公告)日：1991-12-10

申请号：US317679

申请日：1989-03-01

Applicant: Kazuo Fujiura ,  Yasutake Ohishi ,  Michiya Fujiki ,  Terutoshi Kanamori ,  Shiro Takahashi

Inventor： Kazuo Fujiura ,  Yasutake Ohishi ,  Michiya Fujiki ,  Terutoshi Kanamori ,  Shiro Takahashi

IPC: C03B19/14 ,  C03B37/018 ,  C03C1/00 ,  C03C3/32 ,  C03C13/04

CPC classification number: C03B37/01807 ,  C03B19/1415 ,  C03B19/1476 ,  C03B37/01815 ,  C03B37/01861 ,  C03C1/00 ,  C03C13/042 ,  C03C3/325 ,  C03B2201/82 ,  C03B2207/30 ,  C03B2207/81 ,  C03B2207/90 ,  Y10S65/16

Abstract: Provided is a process for preparing a homogeneous fluoride glass containing high purity BaF.sub.2 through the CVD process characterized in that the used gaseous mixture comprising: a barium .beta.-diketonate complex serving as a first starting material and represented by the following general formula (1) of: ##STR1## wherein R is an alkyl group having 1 to 7 carbon atoms, R' is a substituted alkyl group having fluorine atoms substituting hydrogen atoms and represented by C.sub.n F.sub.2n+1 where n is an integer of from 1 to 3;a gaseous or vaporizable compound of the metallic element constituting said fluoride glass, the gaseous or vaporizable compound serving as a second starting material; and a fluorine-containing gas serving as fluorinating agent. Further provided is a process for preparing a preform for a fluoride optical fiber which is low in transmission loss, by depositing the fluoride glass over the interior wall of a cylindrical tube or the wall of rod-like glass substrate through the CVD process followed by collapsing.

公开(公告)号：US5055120A

公开(公告)日：1991-10-08

申请号：US498453

申请日：1990-03-20

Applicant: Danh C. Tran ,  Reza Mossadegh ,  Nicholas Garito ,  Mohamad Farid

Inventor： Danh C. Tran ,  Reza Mossadegh ,  Nicholas Garito ,  Mohamad Farid

IPC: C03B37/012 ,  C03B37/027 ,  C03B37/029

CPC classification number: C03B37/01268 ,  C03B37/01271 ,  C03B37/027 ,  C03B37/029 ,  C03B2201/82 ,  C03B2205/16 ,  Y10S65/16 ,  Y10S65/90

Abstract: Improved fluoride glass optical fibers are produced by a process introducing several improvements in the production of fluoride glass preforms and the drawing of fibers therefrom. Reduced bubble formation and crystallization are obtained by vertically spinning a fluoride glass melt within a glass cladding tube at a high rotational speed, or alternatively, pouring a flouride glass core melt into a cladding tube while slowly raising the mold from an inclined position to a vertical position, or alternatively, introducing a core tube inside a cladding tube. The production of fibers is enhanced if at least one production phase, i.e., preform formation or fiber drawing, is conducted in an atmosphere containing reactive gases that scavenge molecules that could otherwise react with, hydrolyze and oxidize the fluoride glass. The disclosure also describes several devices uniquely useful in the process of the present invention. In another aspect of the present invention, fluoride glass fibers may be clad with a fluoropolymer which is coated with a polymerizable resin.

Abstract translation: 改进的氟化物玻璃光纤通过在氟化物玻璃预成型件的生产中的几个改进和从其中拉出纤维的方法来生产。 通过在玻璃包覆管内以高转速垂直旋转氟化物玻璃熔体，或者将玻璃芯熔融物倾倒到包层管中，同时将模具从倾斜位置缓慢升高至垂直方向 位置，或者在芯管内部引入芯管。 如果在含有反应气体的气氛中进行至少一个生产阶段，即预型体形成或纤维拉伸，则可以增加纤维的生产，所述反应性气体清除可能会与氟化物玻璃反应，水解和氧化的分子。 本公开还描述了在本发明的方法中独特有用的几种装置。 在本发明的另一方面，氟化物玻璃纤维可以用涂覆有可聚合树脂的含氟聚合物包覆。

公开(公告)号：US4897100A

公开(公告)日：1990-01-30

申请号：US296564

申请日：1989-01-13

Applicant: Minor L. Nice

Inventor： Minor L. Nice

IPC: C03B37/023

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

Abstract: A double crucible fiberizing apparatus and process for producing a continuous glass filament having a core fluoride-containing glass concentrically surrounded by a clad fluoride-containing glass at increased throughput speeds while simultaneously achieving increased length and uniform filament diameter are disclosed.

Abstract translation: 公开了一种双坩埚纤维化装置及其生产连续玻璃丝的方法，该连续玻璃丝具有含氟化含氟玻璃，其中包含含氟化物的玻璃以增加的生产速度同时包围，同时实现增加的长度和均匀的长丝直径。

公开(公告)号：US4729777A

公开(公告)日：1988-03-08

申请号：US897297

申请日：1986-08-15

Applicant: Yoshinori Mimura ,  Osamu Shinbori ,  Tetsuya Nakai ,  Hideharu Tokiwa

Inventor： Yoshinori Mimura ,  Osamu Shinbori ,  Tetsuya Nakai ,  Hideharu Tokiwa

IPC: C03C13/04 ,  C03B5/00 ,  C03B8/00 ,  C03B37/012 ,  C03B37/014 ,  G02B6/00 ,  C03B37/023

CPC classification number: C03B37/01274 ,  C03B2201/82 ,  Y10S65/16

Abstract: A method and apparatus is disclosed which ensures highly accurate control of the core-cladding diameter, enabling the fabrication of a preform for the single mode fiber. Moreover, glass refining steps for dehydration, the removal of compound ions, the reduction of the absorption loss by transition metals, etc. and preform manufacturing steps are combined into a series of steps, and the entire manufacturing process can be mechanized and automatically controlled; therefore, the yield rate of product is high and the industrial-scale productivity is also excellent.

Abstract translation: 公开了一种方法和装置，其确保对芯包层直径的高精度控制，从而能够制造用于单模光纤的预成型件。 此外，用于脱水，去除复合离子的玻璃精制步骤，通过过渡金属的吸收损失的降低等以及预成型件的制造步骤被组合成一系列步骤，整个制造过程可以被机械化和自动控制; 因此，产品成品率高，工业规模生产力也很好。

公开(公告)号：US4680044A

公开(公告)日：1987-07-14

申请号：US801666

申请日：1985-11-25

Applicant: Ricardo C. Pastor

Inventor： Ricardo C. Pastor

IPC: C03B37/027 ,  C03C23/00 ,  C03C25/00 ,  C03C25/62

CPC classification number: C03C25/6233 ,  C03B37/027 ,  C03C23/00 ,  C03C25/00 ,  C03B2201/82 ,  C03B2205/02 ,  Y10S65/16

Abstract: The present invention relates to a method of producing a fluoride glass preform and/or fiber having a modified refractive index by heating the fluoride glass preform to a temperature that is above its glass transition temperature, but below its devitrification temperature; inserting a first electrode into the inner core of the preform and surrounding the outer perimeter of the preform with a second electrode of opposite polarity; means for generating an electromotive force; and applying an electromotive force through the first electrode and the second electrode which causes a movement of positive ions toward the electrode of opposite charge while simultaneously causing a movement of negative ions toward its electrode of opposite charge such that the movement of these ions results in a modification of the refractive index of the preform.

Abstract translation: 本发明涉及通过将氟化物玻璃预制件加热到高于其玻璃化转变温度但低于其失透温度的温度来生产具有改性折射率的氟化物玻璃预制棒和/或纤维的方法; 将第一电极插入预成型件的内芯中，并用相反极性的第二电极围绕预型件的外周; 用于产生电动势的装置; 以及通过所述第一电极和所述第二电极施加电动势，所述电动势使得正离子朝向相反电荷的电极移动，同时使负离子向其相反电荷的电极移动，使得这些离子的运动导致 改进预成型件的折射率。