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    METHOD OF FORMING GLASS ARTICLES
    13.
    发明专利
    METHOD OF FORMING GLASS ARTICLES 未知

    公开(公告)号：CA2041777A1

    公开(公告)日：1992-02-17

    申请号：CA2041777

    申请日：1991-05-03

    Applicant: CORNING INC

    Inventor： CORNELIUS LAUREN K ,  TICK PAUL A

    IPC: C03B15/02 ,  C03B15/14 ,  C03B18/00 ,  C03B18/02 ,  C03B23/037 ,  C03B23/047 ,  C03B37/023 ,  C03B37/025 ,  C03B37/027 ,  C03B37/029 ,  G02B6/00 ,  C03B37/03

    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.

    Glass-ceramic fiber lasers and amplifiers
    15.
    发明专利
    Glass-ceramic fiber lasers and amplifiers 未知

    公开(公告)号：AU7124001A

    公开(公告)日：2001-11-20

    申请号：AU7124001

    申请日：2001-03-14

    Applicant: CORNING INC

    Inventor： BORRELLI NICHOLAS F ,  SAMSON BRYCE N ,  TICK PAUL A

    IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/17

    Abstract: A glass-ceramic rare earth doped fiber comprises a plurality of crystallites, wherein at least 90% of the rare earth dopant is situated within said crystallites. The stimulated emission and absorption line shapes of the rare earth doped glass-ceramic fiber is narrower than that stimulated emission and absorption line shapes of the precursor rare earth doped glass. This is indication of the reduction in the inhomogenous broadening of glass-ceramic fibers compared to glass fibers. An embodiment of an optical amplifier includes: an input port; a length of glass-ceramic rare earth doped fiber, the glass-ceramic fiber being operatively coupled to the input port and including a plurality of crystallites; at least one optical pump coupled to this glass-ceramic fiber; an output port providing an amplified optical signal; and at least one optical component situated between the input port and the output port.

    CASTING CORE/CLAD GLASS PREFORMS
    17.
    发明专利
    CASTING CORE/CLAD GLASS PREFORMS 未知

    公开(公告)号：CA2033704A1

    公开(公告)日：1992-03-11

    申请号：CA2033704

    申请日：1991-01-07

    Applicant: CORNING INC

    Inventor： TICK PAUL A

    IPC: C03B37/016 ,  C03B37/012 ,  G02B6/00 ,  C03B37/023

    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 liquids 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.

    SEALING MATERIALS AND GLASSES
    18.
    发明专利
    SEALING MATERIALS AND GLASSES 未知

    公开(公告)号：CA2050517C

    公开(公告)日：2002-06-25

    申请号：CA2050517

    申请日：1991-09-03

    Applicant: CORNING INC

    Inventor： CORNELIUS LAUREN K ,  FRANCIS GAYLORD L ,  TICK PAUL A

    IPC: C03C3/247 ,  C03C8/06 ,  C03C8/08 ,  C03C8/14 ,  C03C8/18 ,  C03C8/24 ,  C09K3/10

    Abstract: Mill additions are disclosed which lower the CTE of, and are compatible with, tin-phosphorus oxyfluoride glasses. The sealing materials provide fusion-type seals having a CTE not over about 110x10-7/.degree.C and a sealing temperature not over about 350.degree.C. Also disclosed is a family of glass compositions in the tin-phosphorus oxyfluoride system that exhibit very low glass transition temperatures and coefficients of thermal expansion not over about 160x10-7/.degree.C (25-150.degree.C). In addition to the four basic elements, the glasses contain up to 11% Nb, and may additionally contain up to 10%, taken individually or in combination, of V, Fe and/or Mo to further decrease the Tg and CTE values.

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