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    106.
    发明专利
    未知

    公开(公告)号：DE69621974T2

    公开(公告)日：2003-01-16

    申请号：DE69621974

    申请日：1996-04-09

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

    IPC: C03B37/012 ,  G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/16

    Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

    Waveguide profile for large effective area
    107.
    发明专利
    Waveguide profile for large effective area 未知

    公开(公告)号：AU748054B2

    公开(公告)日：2002-05-30

    申请号：AU9793898

    申请日：1998-10-06

    Applicant: CORNING INC ,  YAMMING LIU

    Inventor： LIU YANMING ,  BERKEY GEORGE E

    IPC: G02B6/02 ,  G02B6/036 ,  G02B6/16 ,  G02B6/22

    Abstract: Disclosed is a single mode optical waveguide fiber having a segmented core design. The core may have two or more segments. The highest refractive index portion of the core is spaced apart from the centerline of the waveguide fiber. The relative index of the first or center segment of the core is negative, where the reference refractive index is taken to be the minimum index clad. This family of core profiles provides effective areas in the range of 110 mum2 to 150 mum2 in the operating window around 1550 nm.

    SINGLE-MODE FIBER-OPTICAL WAVEGUIDE WITH CONTROLLED DISPERSION AND PROCESS OF ITS MANUFACTURE ( VARIANTS )
    108.
    发明专利
    SINGLE-MODE FIBER-OPTICAL WAVEGUIDE WITH CONTROLLED DISPERSION AND PROCESS OF ITS MANUFACTURE ( VARIANTS ) 未知

    公开(公告)号：RU2178901C2

    公开(公告)日：2002-01-27

    申请号：RU96107903

    申请日：1996-04-10

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

    IPC: C03B37/012 ,  C03B37/014 ,  G02B6/00 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/16

    Abstract: electronics, optics. SUBSTANCE: single-mode fiber-optical waveguide is designed to diminish energy loss caused by four- wave shift. Waveguide includes region of glass core having profile of distribution of refractive index and surrounded by layer of glass jacket with refractive index nc less than at least part of profile of refractive index of specified region of glass core. Waveguide includes collection of sections along its length and has variable total dispersion which changes its sign from positive to negative and from negative to positive from one section to another section along length of waveguide. Variable total dispersion includes at least first total dispersion Di of one sign over some sections and second total dispersion Dj of opposite sign over other sections. Each section comprises segments ( (dli,dlj) ). Each segment has corresponding constant total dispersion ( (Di,Dj) ) and length of wave of zero dispersion lambda0 varies along length of waveguide between first range including wave lengths from 1480 to 1535 nm with total dispersion equal to Di and second range including wave lengths from 1565 to 1680 nm with total dispersion equal to Dj. Communication line in which sections of signal transmission having zero dispersion have small length is formed by proper selection of changes of values of total dispersion and lengths of sections. Change of total dispersion leads to fact that communication line exerts dispersion effect specified in advance on passing signal in specified range of lengths of waves. In agreement with invention properties of waveguide selected from group including geometry of waveguide, refractive index of waveguide, profile of distribution of waveguide and composition of waveguide are altered to change dispersion along length of waveguide. EFFECT: invention provides for reduction of optical losses and dispersion to specified value. 14 cl, 38 dwg _

    Method of making optical fibers
    109.
    发明专利
    Method of making optical fibers 未知

    公开(公告)号：AU733718B2

    公开(公告)日：2001-05-24

    申请号：AU3203697

    申请日：1997-04-21

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E

    IPC: G02B6/028 ,  C03B37/012 ,  C03B37/018 ,  C03B37/027 ,  G02B6/18 ,  G02B6/22

    Abstract: A preform (94) for making an optical fiber is made by depositing silica soot (91) around a tube (90). Pieces of differing glass compositions (81, 82) are placed in the bore of the tube. This preform is then sintered, fused and collapsed. A draw blank is obtained which can be drawn into a low-loss, dispersion managed, single-mode optical fiber.

    Monolithic coaxial device
    110.
    发明专利
    Monolithic coaxial device 未知

    公开(公告)号：AU5312899A

    公开(公告)日：2000-01-17

    申请号：AU5312899

    申请日：1999-06-25

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  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.

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