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    Method of making polarization retaining fiber
    41.
    发明专利
    Method of making polarization retaining fiber 未知

    公开(公告)号：AU648181B2

    公开(公告)日：1994-04-14

    申请号：AU1866992

    申请日：1992-06-30

    Applicant: CORNING INC

    Inventor： HAWK ROBERT MARTIN ,  BERKEY GEORGE EDWARD ,  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 ENLARGING END OF CAPILLARY TUBE BORE
    42.
    发明专利
    METHOD OF ENLARGING END OF CAPILLARY TUBE BORE 未知

    公开(公告)号：AU6388790A

    公开(公告)日：1991-04-18

    申请号：AU6388790

    申请日：1990-10-08

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD

    IPC: G02B6/255 ,  C03C15/00 ,  C03C25/68 ,  G02B6/28 ,  G02B6/36 ,  G02B6/38 ,  C03C23/00

    Abstract: A method is described of forming a tapered aperture at the end of a capillary tube bore (12). A gaseous etchant (22) such as a fluorine-containing compound flows through the bore (12) and emanates from the first end (14) of the tube (10). That tube end is heated to create a longitudinal temperature gradient. The gaseous etchant reacts with the tube (10) and enlarges that portion of the bore (12) at the first end. The resultant tapered aperture has a surface smoothness and shape that greatly facilitates the insertion of optical fibers during the fabrication of optical energy transfer devices.

    46.
    发明专利
    未知

    公开(公告)号：DE69805934D1

    公开(公告)日：2002-07-18

    申请号：DE69805934

    申请日：1998-09-24

    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.

    Method of making segmented core optical waveguide preforms
    48.
    发明专利
    Method of making segmented core optical waveguide preforms 未知

    公开(公告)号：AU733824B2

    公开(公告)日：2001-05-24

    申请号：AU8941198

    申请日：1998-10-19

    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.

    49.
    发明专利
    未知

    公开(公告)号：BR9911403A

    公开(公告)日：2001-03-20

    申请号：BR9911403

    申请日：1999-06-25

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD ,  NOLAN DANIEL A

    IPC: G02B6/00 ,  G02B6/02 ,  G02B6/036 ,  G02B6/14 ,  G02B6/287 ,  G02B6/293 ,  G02B6/34 ,  G02B6/26

    Abstract: The present invention provides environmentally stable interferometric and lattice devices that exhibit low excess loss and polarization dependent loss. The interferometric and lattice devices of the present invention are inexpensive and simple to make. The modal noise at the splices between the device pigtails and the system fiber is minimized or eliminated.The present invention is an optical device for filtering a light signal. The optical device has a tunable spectral response. The optical device includes an optical fiber having a core region and a cladding with refractive index n2. The first core region includes a core having a refractive index n1 and a first fiber coupling regulator integral with the first optical fiber. The first fiber coupling regulator couples the light signal between a first optical path and second optical path and substantially prevents the light signal from coupling into a third optical path.

    50.
    发明专利
    未知

    公开(公告)号：BR9909523A

    公开(公告)日：2000-12-12

    申请号：BR9909523

    申请日：1999-04-09

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD

    IPC: G02B6/00 ,  C03B37/025 ,  C03B37/027 ,  G02B6/02 ,  C03B37/02

    Abstract: An optical fiber and method of making, wherein the optical fiber alternates between regions having different diameters along its length, wherein the refractive index of said blank and the diameters of said fiber are chosen to result in a fiber having alternating regions of positive and negative dispersion at a wavelength which is greater than 1480 nm, yet preferably has a low net dispersion and dispersion slope. A preferred such profile consists of a core region surrounded by a cladding region, said core region comprised of a central core region which is updoped with respect to said cladding region, said central core region surrounded by a moat region which is downdoped with respect to said cladding region, and said moat region is surrounded by an annular ring region which is updoped with respect to said cladding region.

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