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    METHOD OF MAKING AN ECONOMICAL FIBER COUPLER
    51.
    发明专利
    METHOD OF MAKING AN ECONOMICAL FIBER COUPLER 未知

    公开(公告)号：CA1335870C

    公开(公告)日：1995-06-13

    申请号：CA616802

    申请日：1994-01-20

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E

    IPC: C03B37/14 ,  G02B6/28

    Abstract: A method of making an economical fiber coupler comprising providing a glass tube having first and second end portions and a midregion, and a longitudinal aperture extending therethrough. Two suitably prepared glass optical fibers, each having a core and cladding, are disposed within the longitudinal aperture, the fibers extending beyond each end thereof. The fibers are held taut to effect a tension therein, and they are glued to each end portion. The midregion of the member is heated, collapsed about the fibers, and drawn to reduce the diameter thereof.

    CAPILLARY SPLICE AND METHOD
    52.
    发明专利
    CAPILLARY SPLICE AND METHOD 未知

    公开(公告)号：CA1326370C

    公开(公告)日：1994-01-25

    申请号：CA616371

    申请日：1992-05-08

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E

    IPC: C03B23/07 ,  G02B6/38

    Abstract: of the Invention An optical fiber splice and the method of forming it are described wherein a hollow cylindrical glass member is provided, the member having a bore along the longitudinal axis thereof. Fluid at a pressure in excess of ambient pressure is provided to the bore while the member is subjected to localized heating of the member to the softening point of the glass. In this manner, a bubble is formed within the member bore under the influence of said heating and pressure. For more uniform bubbles, the member may be rotated about its longitudinal axis while it is subjected to said fluid pressure and heating. The splice member is subsequently formed by severing the cylindrical member at the location of the bubbles. Optical fibers may be inserted into the ends of the splicing member and cemented in place.

    METHOD OF MAKING POLARIZATION RETAINING FIBER
    53.
    发明专利
    METHOD OF MAKING POLARIZATION RETAINING FIBER 未知

    公开(公告)号：CA2033705A1

    公开(公告)日：1992-01-31

    申请号：CA2033705

    申请日：1991-01-07

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E

    IPC: C03B37/012 ,  C03B37/014 ,  C03B37/02 ,  G02B6/024 ,  C03B37/018

    Abstract: A method of making an optical fiber having an oblong core comprising the steps of depositing layers of core glass particles and cladding glass particles on an enlarged mandrel, removing the mandrel to form a tubular porous preform, consolidating the porous preform to form a dense glass preform, evacuating the central hole of the dense glass preform while stretching that preform to collapse the central hole thereof and form a flattened rod, applying cladding material to the rod, and drawing the resultant composite to form an optical fiber. To facilitate the flat collapse of the central hole of the dense glass preform and to cause the core to have a large aspect ratio, the inside diameter-to-outside diameter ratio of the dense glass preform should be within the range of 0.3 to 0.9. For preferred core and cladding glasses, this ratio should be between 0.5 and 0.6. Also, the mandrel diameter should be at least 12 mm, and it is preferably between 25 mm and 50 mm.

    METHOD OF MAKING OPTICAL DEVICES
    54.
    发明专利
    METHOD OF MAKING OPTICAL DEVICES 未知

    公开(公告)号：CA2006344A1

    公开(公告)日：1990-12-15

    申请号：CA2006344

    申请日：1989-12-21

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  CAIN MICHAEL B ,  OVERMAN KENNETH T

    IPC: C03C25/00 ,  G02B6/28 ,  G02B6/26

    Abstract: A fiber optic coupler is formed by providing a glass tube having a longitudinal aperture extending therethrough. Glass optical fibers, each having a core, cladding and coating are disposed within the longitudinal aperture, the fibers extending beyond each end thereof. The coating is removed from that portion of the fibers in the midregion of the tube. The midregion of the tube is heated, collapsed about the fibers, and drawn to reduce the diameter thereof over a predetermined length. The fibers that are used in the process of making the coupler are initially provided with a coating that is too thin to provide good handleability and strength. However, the thin initial coating enables the use of a tube having a small aperture and thereby enhances the tube collapse step. After the coupler is formed, the fibers extending therefrom are overcoated. The process can be used to make other kinds of optical devices including integrated optical components.

    METHOD OF MAKING OPTICAL FIBERS
    56.
    发明公开
    METHOD OF MAKING OPTICAL FIBERS 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON OPTISCHEN FASERN

    公开(公告)号：EP1171789A4

    公开(公告)日：2002-11-27

    申请号：EP00918405

    申请日：2000-03-23

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  SRIKANT V

    IPC: C03B37/025 ,  C03B37/027 ,  G02B6/036 ,  G02B6/18 ,  G02B6/16 ,  H04B10/18

    CPC classification number: G02B6/02009 ,  C03B37/0253 ,  C03B37/027 ,  C03B37/02736 ,  C03B2203/06 ,  C03B2203/18 ,  C03B2203/24 ,  C03B2203/36 ,  C03B2205/40 ,  G02B6/02242 ,  G02B6/02247 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03644

    Abstract: The optical fiber alternates between regions having different dia meters along its length, wherein the refractive index and the diameters of said fiber result in alternating regions of positive and negative dispersion at a wavelength greater than 1480 nm, yet preferably has a low net dispersion and dispersion slope. A preferred profile consists of a core region surrounded by a cladding region, said core region comprising a central core region updoped with respect to said cladding region, said central core region surrounded by a moat region downdoped with respect to said cladding region, said moat region surrounded by an annular region updoped with respect to said cladding region. The family of profiles presented when used in conjunction with alternating positive and negative dispersion regions produce low dispersion slope fibers. The family of profiles is useful in conventional WDM applications.

    Abstract translation: 光纤在沿其长度具有不同直径的区域之间交替，其中所述光纤的折射率和直径导致在大于1480nm的波长处交替出现正色散和负色散的区域，但优选具有低的净色散和色散 坡。 优选的轮廓由被包层区域包围的核心区域组成，所述核心区域包括相对于所述包层区域上沉的中心核心区域，所述中心核心区域由相对于所述包层区域向下掺杂的壕沟区域包围，所述壕沟区域 被相对于所述包层区域上升的环形区域包围。 当与交替的正和负色散区域结合使用时，所呈现的轮廓族产生低色散斜率纤维。 配置文件系列在常规WDM应用中很有用。

    57.
    发明专利
    未知

    公开(公告)号：DE602008000977D1

    公开(公告)日：2010-05-20

    申请号：DE602008000977

    申请日：2008-02-26

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  LI MING-JUN ,  LI SHENPING ,  NOLAN DANIEL A

    IPC: G02F1/35

    Abstract: An optical-fiber-based light source that generates light via third-harmonic (TH) generation is disclosed. The light source includes a pump light source that provides pump light having a fundamental mode of wavelength lambda P . The light source also includes an optical fiber optically coupled to the pump light source. The optical fiber's core refractive index profile has (i) a central region with a refractive index value Delta 1 , (ii) a first annular region immediately surrounding the central region and having a refractive index value Delta 2 , and (iii) a second annular region immediately surrounding the first annular region and having a refractive index value Delta 3 . The optical fiber satisfies the conditions Delta 2 1 and Delta 2 3 , and max{Delta 1 ,Delta 3 }-Delta 2 >1.2%. The pump light produces TH-generated light having a higher-order mode of wavelength lambda TH =(1/3)lambda P and that is outputted at the optical fiber output end. The pump light fundamental mode overlaps the TH-generated-light higher order mode over the length of the optical fiber to provide a conversion efficiency of 1% or greater.

    58.
    发明专利
    未知

    公开(公告)号：AT316944T

    公开(公告)日：2006-02-15

    申请号：AT00931925

    申请日：2000-04-07

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  BOOKBINDER DANA C ,  FIACCO RICHARD M ,  GIROUX CYNTHIA B ,  HAWTOF DANIEL W ,  POWERS DALE R ,  SIRKANT V

    IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  G02B6/02 ,  C03B37/018

    Abstract: A cylindrical glass body having a low water content centerline region and method of manufacturing such a cylindrical glass body for use in the manufacture of optical waveguide fiber is disclosed. The centerline region of the cylindrical glass body has a water content sufficiently low such that an optical waveguide fiber made from the cylindrical glass body of the present invention exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km at a measured wavelength of 1380 nm. A low water content plug used in the manufacture of such a cylindrical glass body, an optical waveguide fiber having a low water peak, and an optical fiber communication system incorporating such an optical waveguide fiber is also disclosed.

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