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    51.
    发明专利
    未知

    公开(公告)号：DE69328731D1

    公开(公告)日：2000-06-29

    申请号：DE69328731

    申请日：1993-06-16

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD ,  MILLER WILLIAM JAMES

    IPC: G02B6/28 ,  G02B6/287

    Abstract: A method is described in making a fiber optic coupler, in which there is first formed an intermediate produced composed of an elongated body of matrix glass, with a plurality of optical fibers extending through the midregion of the body, the fibers being fused together along with the midregion. The diameter of the central portion of the midregion and the diameters of the fibers in the central portion are smaller than the diameters thereof at the end regions of the body. First and second portions of uncollapsed longitudinal bore extend from the midregion into the end regions of the body, and respective funnels connect the first and second bore portions to the end surfaces of the body. At least one of the fibers extends through the first bore portion and the first funnel, and at least one other of the fibers extends through the second bore portion and second funnel. A hollow filament is inserted through the first funnel and into the first uncollapsed bore portion, and is evacuated, thereby evacuating the first uncollapsed bore portion. Glue is applied to the first funnel, the glue being drawn into the first uncollapsed bore portion due to its evacuated condition.

    52.
    发明专利
    未知

    公开(公告)号：BR9804307A

    公开(公告)日：1999-12-07

    申请号：BR9804307

    申请日：1998-10-29

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD

    IPC: G02B6/036 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018

    Abstract: A method of making a segmented core optical waveguide preform for making fiber that is resistant to attenuation increases due to hydrogen and heat aging. A first core region comprising a silica glass rod containing at least a first dopant such as fluorine is inserted into a central opening of a second core region comprising silica soot containing a second dopant such as germanium. The first core region and second core region are consolidated together to form a segmented core region and cladding is deposited on the outer surface of the segmented core region. The second core region having the central opening is made by depositing silica soot containing the second dopant and removing the mandrel.

    Chlorine-doped optical component
    55.
    发明专利
    Chlorine-doped optical component 未知

    公开(公告)号：SG47577A1

    公开(公告)日：1998-04-17

    申请号：SG1996002920

    申请日：1990-10-25

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD

    IPC: G02B6/28 ,  G02B6/10

    Abstract: A fiber optic coupler of the type wherein first and second single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form a coupling region. The fiber diameters are smaller in the coupling region than in the the remainder of the fibers. The cladding of the second fiber contains an amount of chlorine sufficient to increase the refractive index n'_2 thereof to a value greater than the refractive index n2 of the cladding of the first fiber.

    57.
    发明专利
    未知

    公开(公告)号：DE69028081T2

    公开(公告)日：1997-02-27

    申请号：DE69028081

    申请日：1990-10-25

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD

    IPC: G02B6/28 ,  G02B6/12

    Abstract: A fiber optic coupler of the type wherein first and second single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form a coupling region. The fiber diameters are smaller in the coupling region than in the the remainder of the fibers. The cladding of the second fiber contains an amount of chlorine sufficient to increase the refractive index n'_2 thereof to a value greater than the refractive index n2 of the cladding of the first fiber.

    58.
    发明专利
    未知

    公开(公告)号：DE69212922T2

    公开(公告)日：1997-02-20

    申请号：DE69212922

    申请日：1992-01-20

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD ,  HAWK ROBERT MARTIN ,  TARCZA STEVEN HOWARD

    IPC: C03B37/012 ,  C03B37/014 ,  C03B37/027 ,  G02B6/024

    Abstract: There is initially formed a draw blank having diametrically opposed longitudinal apertures in the cladding glass parallel to the core glass region. The draw blank is drawn into a fiber under such conditions that the apertures close as the fiber is being drawn. The flow of surrounding glass, including the core glass region, toward the collapsing apertures, causes the core to assume an elliptical shape. The apertures are of such cross-sectional area and spacing from the core that the core develops the desired aspect ratio.

    METHOD OF MAKING FIBER OPTIC COUPLERS
    59.
    发明专利
    METHOD OF MAKING FIBER OPTIC COUPLERS 未知

    公开(公告)号：AU5881090A

    公开(公告)日：1991-01-17

    申请号：AU5881090

    申请日：1990-07-09

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD ,  KROWIAK MARK THOMAS ,  SAUNDERS DANIEL PAUL

    IPC: G02B6/26 ,  C03B23/047 ,  G02B6/24 ,  G02B6/255 ,  G02B6/28 ,  C03B37/028 ,  G02B6/245 ,  G02B6/25 ,  G02B6/36

    Abstract: A method is described for making a low reflectance optical fiber end termination. This comprises providing a region of uncoated glass optical fiber having a predetermined diameter and a first end, and heating the fiber at a location remote from the first end. The fiber is then pulled on opposite sides of the heated location to sever the end of the fiber, thereby leaving on the optical fiber a tapered end section. The end of said tapered section is further heated to lower the viscosity of the material thereof by an amount sufficient to cause the material to recede back along the fiber and form a rounded end thereon. An apparatus for carrying out this method is also described.

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