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    21.
    发明专利
    未知

    公开(公告)号：ID28395A

    公开(公告)日：2001-05-17

    申请号：ID20011010

    申请日：1999-10-18

    Applicant: CORNING INC

    Inventor： CAIN MICHAEL B ,  HAWTOF DANIEL W ,  SRIKANT V

    IPC: G02B6/00 ,  C03B19/14 ,  C03B37/014 ,  C03B37/018

    Abstract: The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous soot stream containing the oxides of the selected elements contained within the non-aqueous liquid reactant and the aqueous solution. The resulting multi-component soot is collected by conventional methods to form preforms used in the manufacture of optical waveguide fibers. Alternatively, an aqueous solution may be atomized with a gas at a first burner assembly to form an aerosol and a reactant vaporized for delivery to a second burner assembly. Preforms produced by the methods are also disclosed. The aqueous solution is preferably one comprising a metal salt, e.g. acetate, nitrate, sulfate, carbonate, chloride, hydroxide. The metal of the metal salt is preferably an alkali metal, an alkaline earth metal, lead, lanthanum, cobalt, antimony, erbium, aluminum, neodymium, praeseodymium.

    BROADBAND PULSE-RESHAPING OPTICAL FIBER
    23.
    发明专利
    BROADBAND PULSE-RESHAPING OPTICAL FIBER 未知

    公开(公告)号：CA2352051A1

    公开(公告)日：2000-06-08

    申请号：CA2352051

    申请日：1999-11-10

    Applicant: CORNING INC

    Inventor： EVANS ALAN F ,  BERKEY GEORGE E ,  SRIKANT V

    IPC: G02B6/02 ,  G02B6/036 ,  G02B6/34 ,  G02B6/16 ,  H04B10/12

    Abstract: A pulse-reshaping optical fiber having a core with refractive index nc surrounded by a cladding layer, the diameter of the core changing monotonically along the length of the fiber. The core includes a central region having a maximum refractive index n1 and a moat region disposed radially adjacent to the central region. The moat region has a minimum refractive index n2 which is sufficiently low that the index delta .DELTA.2 of the moat region with respect to nc is not greater than 0.1 %. The moat regio n affects the change in dispersion with respect to fiber cladding diameter, as well as providing the pulse-reshaping fiber with low dispersion versus wavelength slope. The pulse-reshaping fiber is particularly useful in association with optical transmission systems where high transmission rates and narrow pulse widths are desired, including components such as high pulse rate wavelentgh-division-multiplexers (WDMs) and optical regenerators.

    METHOD OF MAKING OPTICAL FIBERS
    24.
    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。

    27.
    发明专利
    未知

    公开(公告)号：BR0111225A

    公开(公告)日：2003-03-18

    申请号：BR0111225

    申请日：2001-05-30

    Applicant: CORNING INC

    Inventor： BICKHAM SCOTT R ,  STONE JEFFERY SCOTT ,  SRIKANT V ,  KUMAR SHIVA ,  CAIN MICHAEL B ,  MISHRA SNIGDHARAJ K

    IPC: G02B6/02 ,  G02B6/036 ,  G02B6/16

    Abstract: Disclosed are refractive index profiles for total dispersion compensating optical waveguide fibers for use in high data rate, long length telecommunications systems. The optical waveguide fibers in accord with the invention provide substantially equal compensation of total dispersion over a range of wavelengths, thus facilitating wavelength division multiplexed systems. Also disclosed are spans of optical waveguide fiber that include a length of transmission fiber together with a length of the compensating fiber. The spans are joined end to end in series arrangement to form the optical waveguide fiber part of a telecommunication system.

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