公开(公告)号：AU2003234412A1

公开(公告)日：2003-12-31

申请号：AU2003234412

申请日：2003-05-13

Applicant: CORNING INC

Inventor： HAWTOF DANIEL W ,  VENKATARAMAN NATESAN ,  DAWES STEVEN B ,  GALLAGHER MICHAEL T

IPC: C03B37/012 ,  C03B37/027 ,  G02B6/02 ,  C03B37/075 ,  C03B37/028 ,  G02B6/16

Abstract: The present invention provides a method for drawing microstructured fibers. A preform having a first set of holes and a second set of holes is provided, and the first set of holes is coupled to a first pressure system, while the second set of holes remains substantially uncoupled to the first pressure system. The pressures of the sets of holes may be independently set or controlled to yield a desired hole geometry in the drawn microstructured optical fiber. The present invention also provides preforms suitable for use with the methods of the invention.

公开(公告)号：CA2396500A1

公开(公告)日：2001-07-19

申请号：CA2396500

申请日：2000-11-14

Applicant: CORNING INC

Inventor： DAWES STEVEN B ,  MORONI MARC ,  VALLON SOPHIE

IPC: G02B6/12 ,  C08F212/14 ,  C08F220/24 ,  G02B6/122 ,  G02B6/132 ,  G02B6/34 ,  G02B6/00 ,  G02B6/10

Abstract: The present invention provides an athermalized organic-containing overclad integrated planar optical waveguide circuit device in which thermal induced shifting of channel wavelengths is minimized. The organic-containing overcla d material is combined with a silica or doped silica glass material in the for m of a local overclad, a bi-layer overclad, or a hybrid overclad. The organic- containing overclad material is a polymer or a sol-gel material.

公开(公告)号：AU4487700A

公开(公告)日：2000-12-05

申请号：AU4487700

申请日：2000-04-24

Applicant: CORNING INC

Inventor： CHEN GANG ,  DAWES STEVEN B ,  KOHNKE GLENN E ,  WELLER-BROPHY LAURA A

IPC: G02B6/00 ,  G02B6/02 ,  G02B6/34 ,  G02F1/01 ,  G02B6/26

公开(公告)号：AU2002356564A1

公开(公告)日：2003-06-17

申请号：AU2002356564

申请日：2002-10-15

Applicant: CORNING INC

Inventor： DAWES STEVEN B ,  JOHNSON WILLIAM W ,  LACOE JASON A ,  MURTAGH MARTIN J ,  TANDON PUSHKAR

IPC: C03B37/014 ,  C03B37/012

Abstract: The invention includes a method of incorporating fluorine into a preform that may be used to produce an optical article. A method that may be used to practice the invention includes a method of making an optical fiber preform. The method includes reacting a fluorine containing precursor in a flame of a combustion burner without forming a soot, thereby forming a fluorine doping atmosphere. A further method that may be practiced to practice the invention includes the step reacting at least a fluorine containing precursor in a flame of a combustion burner, wherein the precursors reacted in the flame are substantially devoid of the element of silicon, thereby forming a fluorine containing atmosphere for the doping of a soot preform. An additional method that may be used to practice the invention includes the step of reacting at least one precursor in the flame of a combustion burner, wherein said precursors comprise at least one fluorine containing compound and the precursors are substantially free of any silicon containing compound, and the additional step of directing a reaction product of said reacting step toward a soot preform.

公开(公告)号：AU3949702A

公开(公告)日：2002-07-01

申请号：AU3949702

申请日：2001-10-31

Applicant: CORNING INC

Inventor： DAWES STEVEN B ,  SCHERMERHORN ANDREW P ,  SRIKANT V ,  TANDON PUSHKAR

IPC: C03B37/014 ,  C03B37/018

公开(公告)号：AU3646901A

公开(公告)日：2001-07-31

申请号：AU3646901

申请日：2001-01-16

Applicant: CORNING INC

Inventor： CHAMBERLAIN DAROL ,  CHEN GANG ,  DAWES STEVEN B ,  MCNEILLY PETER J ,  OUYANG MIKE X

IPC: G02B6/02 ,  G02F1/01 ,  G05D23/24

Abstract: The present invention relates to a tunable optical device 10 that includes an optical fiber device 12 having optical properties that vary with temperature and a heater 14. The heater 14 is thermally coupled to the optical fiber device 12. The heater 14 includes a metal layer 18 and two electrical contacts 20, 22 that are electrically connected to the metal layer 18. The electrical contacts 20, 22 are spaced apart from one another along the metal layer 18. The electrical resistance of the portion of the metal layer 18 between the contacts 20, 22 varies with temperature and serves as a resistive heater. The invention also includes a controller 16 that is electrically connected to the heater 14. The controller 16 provides electrical power to the heater 14 and measures the electrical voltage across the heater 14. The controller 16 compares the measured electrical voltage to a pre-selected reference value. The controller then regulates the amount of electrical current supplied to the heater 14. By regulating the amount of electrical current supplied to the heater 14 the temperature of the heater 14 is controlled.

公开(公告)号：AU723352B2

公开(公告)日：2000-08-24

申请号：AU7404398

申请日：1997-11-21

Applicant: CORNING INC

Inventor： DAWES STEVEN B ,  SADD ANDREA L

IPC: G02B6/255 ,  C03B37/028 ,  C03B37/15 ,  C03C14/00 ,  C08K5/07 ,  C08K5/09 ,  C08K5/10 ,  C08L83/04 ,  C08L101/00 ,  G02B6/30 ,  G02B6/34 ,  G02B6/36 ,  G02B6/42

公开(公告)号：CA2054871A1

公开(公告)日：1992-06-18

申请号：CA2054871

申请日：1991-11-04

Applicant: CORNING INC

Inventor： DAWES STEVEN B

IPC: C01B33/26 ,  C01B33/24 ,  C01B33/40 ,  C01B33/42 ,  C01F11/00 ,  C03B8/02 ,  C03C1/00 ,  C03C14/00 ,  C04B33/04 ,  C04B35/00 ,  C04B35/624 ,  C04B35/626 ,  C04B35/80 ,  C04B38/00 ,  C04B35/22 ,  B28B17/02 ,  C04B41/50 ,  C04B35/64

Abstract: A method for synthesizing alkaline earth metalcontaining ceramic materials by sol-gel processing is described, wherein a sol containing alkoxides or other soluble precursors for a selected ceramic composition, and additionally containing one or more dissolved alkaline earth metal/crown ether complexes, is gelled, dried and fired to convert the precursors and complexes to a polycrystalline ceramic product. The crown ether complexes improve alkaline earth metal solubility and the homogeneous incorporation of these metals into the precursor gels and final crystalline products.

公开(公告)号：CA2033693A1

公开(公告)日：1991-10-24

申请号：CA2033693

申请日：1991-01-07

Applicant: CORNING INC

Inventor： CHYUNG KENNETH ,  DAWES STEVEN B ,  WEXELL DALE R

IPC: C04B35/18 ,  C03C14/00 ,  C04B35/584 ,  C04B35/622 ,  C04B35/80 ,  C04B41/45 ,  C04B41/52 ,  C04B41/81 ,  C04B41/89 ,  C04B41/87 ,  C04B35/58 ,  C04B35/84

Abstract: Silicon nitride reinforcing fibers provided with a protective surface coating comprising a boron nitride base layer and, optionally, an alumina overcoating, and fiberreinforced ceramic matrix composite products incorporating the protectively-coated fibers, are disclosed. The composites offer significantly improved high temperature strength in combination with low dielectric constant and low dielectric loss characteristics.

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.