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    OPTICAL FIBERS HAVING CORES WITH DIFFERENT PROPAGATION CONSTANTS, AND METHODS OF MANUFACTURING SAME
    1.
    发明申请
    OPTICAL FIBERS HAVING CORES WITH DIFFERENT PROPAGATION CONSTANTS, AND METHODS OF MANUFACTURING SAME 审中-公开
    具有不同传播常数的光纤的光纤纤维及其制造方法

    公开(公告)号：WO02090275A3

    公开(公告)日：2003-03-20

    申请号：PCT/US0210338

    申请日：2002-04-03

    Applicant: CORNING INC

    Inventor： KUMAR SHIVA ,  MANYAM UPENDRA H ,  SRIKANT V

    IPC: C03B37/012 ,  C03B37/014 ,  G02B6/34 ,  G02B6/16

    CPC classification number: G02B6/02042 ,  C03B37/01222 ,  C03B37/01493 ,  C03B2203/34 ,  G02B6/02395

    Abstract: Multi-core optical fibers are provided in various embodiments of the present invention which include a plurality of cores. At least two cores (602, 604) of the plurality of cores have different associated mean propagation constants at a reference wavelength. The difference between the associated mean propagation constants may be selected to reduce cross-talk between the at least two cores as compared to cores having a same associated mean propagation constant. A primary coating (614, 618) of light absorbing material may be positioned between the cores to further reduce cross-talk. Also provided are methods for manufacturing the same and wavelength division multiplexing systems using the same.

    Abstract translation: 在包括多个核的本发明的各种实施例中提供多芯光纤。 多个核心中的至少两个核心（602,604）在参考波长处具有不同的相关联的平均传播常数。 可以选择相关联的平均传播常数之间的差异，以便与具有相同相关平均传播常数的核相比，减少至少两个核之间的串扰。 光吸收材料的初级涂层（614,618）可以位于芯之间以进一步减少串扰。 还提供了制造相同的方法和使用该方法的波分复用系统。

    3.
    发明专利
    未知

    公开(公告)号：DE60137842D1

    公开(公告)日：2009-04-16

    申请号：DE60137842

    申请日：2001-05-30

    Applicant: CORNING INC

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

    IPC: G02B6/02 ,  G02B6/036

    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.

    6.
    发明专利
    未知

    公开(公告)号：BR0014335A

    公开(公告)日：2002-06-04

    申请号：BR0014335

    申请日：2000-08-25

    Applicant: CORNING INC

    Inventor： CAIN MICHAEL B ,  SRIKANT V

    IPC: G02B6/02 ,  G02B6/036 ,  H04B10/18 ,  G02B6/00

    Abstract: Disclosed is a dispersion compensating waveguide fiber suitable for use in high data rate, high light power telecommunications systems of intermediate length. The refractive index profile of the compensation fiber is segmented. The segment relative refractive indexes and radii are chosen to provide negative total dispersion and negative total dispersion slope over an extended wavelength range. The index profile design is flexible enough to provide compensated links having total dispersion that is positive, negative, or zero, while maintaining appropriate total dispersion slope compensation. In addition, the waveguide fiber of the invention may be cabled or otherwise buffered prior to its use in a communications system.

    7.
    发明专利
    未知

    公开(公告)号：BR9914871A

    公开(公告)日：2001-07-03

    申请号：BR9914871

    申请日：1999-10-18

    Applicant: CORNING INC

    Inventor： CAIN MICHAEL BRUCE ,  HAWTOF DANIEL WARREN ,  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.

    DISPERSION AND DISPERSION SLOPE COMPENSATED FIBER LINK
    8.
    发明专利
    DISPERSION AND DISPERSION SLOPE COMPENSATED FIBER LINK 未知

    公开(公告)号：CA2386122A1

    公开(公告)日：2001-04-12

    申请号：CA2386122

    申请日：2000-08-25

    Applicant: CORNING INC

    Inventor： SRIKANT V ,  CAIN MICHAEL B

    IPC: G02B6/02 ,  G02B6/036 ,  H04B10/18 ,  G02B6/16 ,  G02B6/34

    Abstract: Disclosed is a dispersion compensating waveguide fiber suitable for use in high data rate, high light power telecommunications systems of intermediate length. The refractive index profile of the compensation fiber is segmented. The core region includes three, four, or five, a central segment (28), a fir st annular segment (30), a second annular segment (32), a third annular segment (34), and a fourth annular segment (36) having different relative refractive indexes. The segment relative refractive indexes and radii are chosen to provide negative total dispersion and negative total dispersion slope over a n extended wavelength range. The index profile design is flexible enough to provide compensated links having total dispersion that is positive, negative , or zero, while maintaining appropriate total dispersion slope compensation. In addition, the waveguide fiber of the invention may be cabled or otherwise buffered prior to its use in a communications system.

    9.
    发明专利
    未知

    公开(公告)号：BR0116142A

    公开(公告)日：2003-10-28

    申请号：BR0116142

    申请日：2001-10-31

    Applicant: CORNING INC

    Inventor： LEHMAN MICHAEL JAMES ,  STONE JEFFERY SCOTT ,  SRIKANT V

    IPC: C03B37/014 ,  C03B37/018

    Abstract: A method for doping silica soot with fluorine during laydown, including providing a bait rod, and providing a burner, wherein the burner emits a reactant flame. The method also including providing at least one first gas-feed separate from the burner, wherein the gas-feed supplies a first jet of fluorine-based gases, and depositing a layer of silica soot on the bait rod by vaporizing a silica producing gas within the reactant flame of the burner. The method further including supplying the first jet of fluorine-based gases to the silica soot deposited on to the bait rod via the first gas-feed subsequent to vaporizing at least a portion of the silica producing gas within the reactant flame of the burner.

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