公开(公告)号：WO9800372A3

公开(公告)日：1998-02-26

申请号：PCT/US9709988

申请日：1997-06-09

Applicant: CORNING INC ,  BURKE GERALD E ,  TRUESDALE CARLTON M

Inventor： BURKE GERALD E ,  TRUESDALE CARLTON M

IPC: G02B6/00 ,  C03B37/014 ,  C03C3/076 ,  C03C13/04 ,  C03C

CPC classification number: C03B37/01413 ,  C03B37/01446 ,  C03B2201/42 ,  C03C13/045

Abstract: The present invention is directed to a process for forming a preform suitable for consolidation to a glass blank for producing an optical waveguide fiber. The preform comprises a core portion and an inner cladding layer surrounding the core portion and contains SiO2 and TiO2. A portion of the TiO2 in the preform is in a crystalline form that is predominantly rutile. In addition to SiO2 and TiO2, the preform contains an additive compound that is preferentially sacrificed instead of TiO2 when the preform is consolidated. The process includes oxidizing Si and Ti containing compounds as well as a precursor of the additive compound to form SiO2, TiO2, and the additive compound. The preform containing these materials is then formed. In addition, the preform can be converted to a glass blank by consolidation of the preform.

公开(公告)号：JP2004002183A

公开(公告)日：2004-01-08

申请号：JP2003124804

申请日：2003-04-30

Applicant: Corning Inc ,  コーニング インコーポレイテッド

Inventor： BURKE GERALD E ,  DAWES STEVEN B ,  GRANGER GARY P ,  MURTAGH MICHAEL T ,  TANDON PUSHKAR ,  TRUESDALE CARLTON M ,  WANG JIE

IPC: C03B37/018 ,  C03B37/014 ,  C03C13/04 ,  G02B6/036 ,  H01S3/067

CPC classification number: C03C13/046 ,  C03B37/01413 ,  C03B37/01446 ,  C03B2201/12 ,  C03B2201/22 ,  C03B2201/28 ,  G02B6/03622 ,  G02B6/03694 ,  H01S3/06716 ,  H01S3/0677

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a cane suitable for forming an optical fiber and a method of forming an optical fiber from the cane.
SOLUTION: A core composition having about 20-30 wt.% P
2 O
5 is formed. An inner clad composition is formed on the outside surface of the core composition and core composition and the inner clad composition are consolidated into a preform having the core and the inner clad while substantially closing a center line hole of the preform. An outer clad is formed on the preform to define the cane. The cane can then be transformed into the optical fiber.
COPYRIGHT: (C)2004,JPO

公开(公告)号：CA2295685A1

公开(公告)日：1999-02-11

申请号：CA2295685

申请日：1998-07-20

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  HOAGLIN CHRISTINE L ,  TRUESDALE CARLTON M

IPC: G02B6/02 ,  C03B37/014 ,  C03B37/018 ,  G02B6/00 ,  G02B6/26 ,  H01S3/16 ,  C03B37/00 ,  G02B6/16

Abstract: A method for making an optical attenuating device comprising an optical waveguide having a core doped with a transition metal and a cladding. The transition metal is deposited in the core during a core blankmaking process. The transition metal doped core is exposed to gaseous hydrogen in a furnace to significantly increase the attenuation of the device.

公开(公告)号：AU7784201A

公开(公告)日：2001-11-12

申请号：AU7784201

申请日：2001-04-17

Applicant: CORNING INC

Inventor： BROWN JOHN T ,  BURKE GERALD E ,  CHACON LISA C ,  DAWES STEVEN B ,  ELLISON ADAM J ,  HAWTOF DANIEL W ,  LUPPINO ANTHONY P ,  SRIKANT V ,  TANDON PUSHKAR ,  TENNENT CHRISTINE L ,  TERRELL JAMES P JR ,  WHALEN JOSEPH M

IPC: C03B37/018 ,  C03B19/14 ,  C03B37/012 ,  C03B37/014 ,  C03C3/06 ,  F23D14/22 ,  F23D14/32 ,  G03F1/00 ,  G03F7/20

Abstract: Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphere, removing water from the transport process, or combinations thereof. In a first embodiment, substantially water-free soot, preforms or glass are achieved by using a hydrogen-free fuel, such as carbon monoxide, in the deposition process. In another embodiment, a soot producing burner has parameters that enable operation on a substantially hydrogen-free fuel. End burners, which minimize water production, are also described. Such water-free methods are useful in depositing fluorine-doped soot because of the low water present and the efficiency in which fluorine is incorporated. In another embodiment, glassy barrier layer methods and apparatus are described for minimizing dopant migration, especially fluorine. Laser and induction methods and apparatus for forming the barrier layer are depicted. A chlorine, fluorine and silica precursor, such as chlorofluorosilane, may be utilized to form fluorinated soot. Other methods and apparatus are directed to combinations of conventional and substantially water-free processes. One embodiment is directed to combustion enhancing additives for addition to the substantially hydrogen-free fuels. The methods and apparatus in accordance with the invention are particularly useful for producing photomask substrates and optical fiber preforms.

公开(公告)号：AU698054B2

公开(公告)日：1998-10-22

申请号：AU6965196

申请日：1996-09-04

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  TRUESDALE CARLTON M

IPC: C03B19/14 ,  C03C1/02 ,  C03C3/06 ,  C03B20/00

公开(公告)号：CA2230976A1

公开(公告)日：1997-03-13

申请号：CA2230976

申请日：1996-09-04

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  TRUESDALE CARLTON M

IPC: C03B19/14 ,  C03C1/02 ,  C03C3/06 ,  C03B20/00

Abstract: A method is disclosed for forming a GeO2-doped SiO2 glass article by depositing glass particles to form a porous preform and then drying and sintering the porous preform. A precursor of SnO2 is also present in the reactant stream used to form the particles, whereby the reaction produces particles of glass that contain GeO2, SiO2 and SnO2. The presence of SnO2 in the particles reduces the reaction of GeO2 with chlorine to form GeCl4 during the drying step. The GeC14 that would have formed would have either escaped from the porous preform or caused GeO2 to be re-deposited in an undesirable portion of the preform. The retention of GeO2 in the article is therefore enhanced.

公开(公告)号：AU1776502A

公开(公告)日：2002-04-08

申请号：AU1776502

申请日：2001-09-27

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  CHANG LISA F ,  DAWES STEVEN B ,  GRANGER GARY P ,  MURTAGH MICHAEL T ,  ONUH CHUKWUEMEKA B ,  SCHIEFELBEIN SUSAN L ,  SWECKER JEANNE L ,  WANG JI ,  WHALEN JOSEPH M

IPC: G02B6/00 ,  C03B8/04 ,  C03B19/14 ,  C03B37/014 ,  G02B6/02

Abstract: The disclosed invention includes an inventive drying agent. The drying agent includes at least one halide and at least one reducing agent. Preferably, the reducing agent includes a compound that will react with an oxygen by-product of the reaction of the halide and water, or the reaction of the halide and an impurity in the preform. The invention also includes a method of drying a soot preform. The method includes disposing the soot preform in a furnace. The furnace is charged with the drying agent which includes the halide and the reducing agent. Heat is then supplied to the furnace. Suitable drying agents for use in the disclosed invention include a mixture of Cl2 and CO; a mixture of Cl2, CO and CO2; and POCl3.

公开(公告)号：AU1324201A

公开(公告)日：2001-03-19

申请号：AU1324201

申请日：2000-07-11

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  TRUESDALE CARLTON M ,  ZENTENO LUIS A

IPC: G02B6/00 ,  C03B37/012

Abstract: An optical fiber with a non-circular cross-section is realized by creating a void having the desired cross-section in a housing and filling the void with an optical material. This structure is then collapsed to solidify it and drawn to desired dimensions. The optical material may be rods, soot or ground material.

公开(公告)号：AU8500198A

公开(公告)日：1999-02-22

申请号：AU8500198

申请日：1998-07-20

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  HOAGLIN CHRISTINE L ,  TRUESDALE CARLTON M

IPC: G02B6/02 ,  C03B37/014 ,  C03B37/018 ,  G02B6/00 ,  G02B6/26 ,  H01S3/16 ,  C03B37/00 ,  G02B6/16

Abstract: A method for making an optical attenuating device comprising an optical waveguide having a core doped with a transition metal and a cladding. The transition metal is deposited in the core during a core blankmaking process. The transition metal doped core is exposed to gaseous hydrogen in a furnace to significantly increase the attenuation of the device.

公开(公告)号：AU6965196A

公开(公告)日：1997-03-27

申请号：AU6965196

申请日：1996-09-04

Applicant: CORNING INC

Inventor： BURKE GERALD E ,  TRUESDALE CARLTON M

IPC: C03B19/14 ,  C03C1/02 ,  C03C3/06 ,  C03B20/00