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    ISOTOPICALLY ALTERED OPTICAL FIBER
    22.
    发明专利
    ISOTOPICALLY ALTERED OPTICAL FIBER 未知

    公开(公告)号：AU2002351376A1

    公开(公告)日：2003-07-09

    申请号：AU2002351376

    申请日：2002-12-11

    Applicant: CORNING INC

    Inventor： HOUSE KEITH L ,  KOCH KARL W III ,  POWERS DALE R ,  WEST JAMES A ,  ALLAN DOUGLAS C ,  BROWN JOHN T ,  CHACON LISA C ,  ELLISON ADAM J G ,  FAJARDO JAMES C ,  GRAY STUART

    IPC: G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/02 ,  G02B6/036 ,  G02F1/35

    Abstract: An isotopically-altered, silica based optical fiber is provided having lower losses, broader bandwidth, and broader Raman gain spectrum characteristics than conventional silica-based fiber. A heavier, less naturally abundant isotope of silicon or oxygen is substituted for a lighter, more naturally abundant isotope to shift the infrared absorption to a slightly longer wavelength. In one embodiment, oxygen-18 is substituted for the much more naturally abundant oxygen-16 at least in the core region of the fiber. The resulting isotopically-altered fiber has a minimum loss of 0.044 dB/km less than conventional fiber, and a bandwidth that is 17 percent broader for a loss range between 0.044-0.034 dB/km. The fiber may be easily manufactured with conventional fiber manufacturing equipment by way of a plasma chemical vapor deposition technique. When a 50 percent substitution of oxygen -18 for oxygen-16 is made in the core region of the fiber, the Raman gain spectrum is substantially broadened.

    Photonic crystal fibers with high resistance to bend loss
    23.
    发明专利
    Photonic crystal fibers with high resistance to bend loss 未知

    公开(公告)号：AU2423201A

    公开(公告)日：2001-05-30

    申请号：AU2423201

    申请日：2000-10-12

    Applicant: CORNING INC

    Inventor： FAJARDO JAMES C ,  WEST JAMES A

    IPC: G02B6/00 ,  G02B6/02

    Abstract: A fiber optic waveguide (30) is disclosed. The fiber optic waveguide includes a core region (34), and a cladding region surrounding the core region. The cladding region includes an inner cladding region (32) and an outer cladding region (38). The inner cladding region has a lattice of large diameter columns (36). The lattice of large diameter columns have a diameter (d) to pitch ( LAMBDA ) ratio defined by the relationship d/ LAMBDA greater than or equal to 0.3.

    PHOTONIC CRYSTAL FIBER
    25.
    发明专利
    PHOTONIC CRYSTAL FIBER 未知

    公开(公告)号：CA2355678A1

    公开(公告)日：2000-06-29

    申请号：CA2355678

    申请日：1999-11-30

    Applicant: CORNING INC

    Inventor： ALLAN DOUGLAS C ,  HAWTOF DANIEL W ,  BORRELLI NICHOLAS F ,  FAJARDO JAMES C ,  FIACCO RICHARD M ,  WEST JAMES A

    IPC: G02B6/02 ,  C03B37/012 ,  C03B37/028 ,  C03C13/04 ,  G02B6/024 ,  G02B6/036 ,  G02B6/18

    Abstract: Disclosed is an optical waveguide fiber preform which is an assembly of one or more core rods (14) surrounded by a plurality of clad rods (10). The clad ro ds (10) have a central portion (12) and a surrounding layer (22), in which the refractive index of the central portion is lower than that of the surroundin g layer. The preform is drawn into an optical waveguide fiber that has a two component clad layer. Proper choice of the central portion (12) and surrounding layer provide a waveguide fiber that is endlessly single mode. Alternative embodiments include fibers containing dopants that enhance fiber photosensitivity or which provide stress-induced or asymmetric-refractive- index-induced birefringence in the waveguide fiber.

    RING PHOTONI CRYSTAL FIBERS
    26.
    发明公开
    RING PHOTONI CRYSTAL FIBERS 审中-公开
    RING-PHOTONI-KRISTALLFASERN

    公开(公告)号：EP1261887A4

    公开(公告)日：2005-09-07

    申请号：EP00965051

    申请日：2000-09-15

    Applicant: CORNING INC

    Inventor： WEST JAMES A

    IPC: G02B6/00 ,  G02B20060101 ,  G02B1/00 ,  G02B6/02 ,  G02B6/22 ,  G02B6/20

    CPC classification number: G02B6/02347 ,  G02B6/02352

    Abstract: A fiber optic waveguide (30) is provided. The fiber optic waveguide includes a core region (34), and a cladding region surrounding the core region. The cladding region includes an inner cladding region (32) and an outer cladding region (42). The inner cladding region has a lattice of ring structures. The core region is formed from a high index material and the cladding region is formed from materials producing an effective refractive index lower than the refractive index of the core region.

    PHOTONIC CRYSTAL FIBER
    27.
    发明公开
    PHOTONIC CRYSTAL FIBER 审中-公开
    光电式KRISTALLFASER

    公开(公告)号：EP1147438A4

    公开(公告)日：2005-04-06

    申请号：EP99969606

    申请日：1999-11-30

    Applicant: CORNING INC

    Inventor： ALLAN DOUGLAS C ,  BORRELLI NICHOLAS F ,  FAJARDO JAMES C ,  FIACCO RICHARD M ,  HAWTOF DANIEL W ,  WEST JAMES A

    IPC: G02B6/02 ,  C03B37/012 ,  C03B37/028 ,  C03C13/04 ,  G02B6/024 ,  G02B6/036 ,  G02B6/16

    CPC classification number: G02B6/02338 ,  B82Y20/00 ,  C03B37/01205 ,  C03B37/028 ,  C03B2203/42 ,  G02B6/02347 ,  G02B6/02352 ,  G02B6/02366 ,  G02B6/02371 ,  H01S3/06741

    Abstract: Disclosed is an optical waveguide fiber preform which is an assembly of one or more core rods (14) surrounded by a plurality of clad rods (10). The clad rods (10) have a central portion (12) and a surrounding layer (22), in which the refractive index of the central portion is lower than that of the surrounding layer. The preform is drawn into an optical waveguide fiber that has a two component clad layer. Proper choice of the central portion (12) and surrounding layer provide a waveguide fiber that is endlessly single mode. Alternative embodiments include fibers containing dopants that enhance fiber photosensitivity or which provide stress-induced or asymmetric-refractive-index-induced birefringence in the waveguide fiber.

    Abstract translation: 公开了一种光波导纤维预制件，其是由多个包覆棒包围的一个或多个芯棒的组件。 复合棒具有中心部分和周围层，其中中心部分的折射率低于周围层的折射率。 预成型件被拉入具有双组分包覆层的光波导纤维中。 中心部分和周围层的适当选择提供无限单模光纤。 替代实施方案包括含有增强纤维光敏性或在波导纤维中提供应力诱导或不对称折射率诱导的双折射的掺杂剂的纤维。

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