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    Improved dispersion shifted optical waveguide
    11.
    发明专利
    Improved dispersion shifted optical waveguide 未知

    公开(公告)号：AU717659B2

    公开(公告)日：2000-03-30

    申请号：AU7173196

    申请日：1996-11-13

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA ADISESHAIA

    IPC: G02B6/028 ,  C03B37/075 ,  G02B6/036

    Abstract: A novel optical waveguide fiber having low total dispersion slope, relatively large mode field diameter, larger effective area, and a relatively simple core profile design is disclosed. The core refractive index profile comprises three segments (2,4,6). The adjustability of the height, width and location of the three core index profile segments, provides sufficient flexibility to meet a specification which calls for a dispersion shifted waveguide fiber capable of limiting four photon mixing or self phase modulation. The novel waveguide is characterized by a mode field diameter ≥ 7.5 microns and a total dispersion slope ≤ 0.070 ps/nm -km.

    12.
    发明专利
    未知

    公开(公告)号：DE69125913D1

    公开(公告)日：1997-06-05

    申请号：DE69125913

    申请日：1991-09-11

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD ,  BHAGAVATULA VENKATA ADISESHAIA ,  HAWK ROBERT MARTIN ,  TARCZA STEVEN HOWARD

    IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03C15/00 ,  C03C25/68 ,  G02B6/024 ,  C03B37/027 ,  C03B23/207

    Abstract: A method is provided of forming an elongated glass article, comprising providing a tubular glass handle having a mandrel protruding from one end thereof, rotating the combination of mandrel and tube, and directing toward the rotating mandrel and an end portion of the tube a stream of glass particles comprising SiO 2 doped with at least 15 wt. % B 2 O 3 while reciprocating said mandrel and tube with respect to said stream to build up a porous glass coating. The mandrel is then removed from the porous glass coating and tube to form an assembly of handle and tubular porous preform. The porous preform is heated to consolidate it to a dense glass preform having an axial aperture, and to fuse the dense glass preform to the handle. NF 3 is flowed through the aperture while maintaining the temperature of the consolidated preform above 600°C but below that temperature which would cause the substantial elongation of the blank.

    Improved dispersion shifted optical waveguide
    13.
    发明专利
    Improved dispersion shifted optical waveguide 未知

    公开(公告)号：AU7173196A

    公开(公告)日：1997-05-29

    申请号：AU7173196

    申请日：1996-11-13

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA ADISESHAIA

    IPC: G02B6/028 ,  C03B37/075 ,  G02B6/036

    Abstract: A novel optical waveguide fiber having low total dispersion slope, relatively large mode field diameter, larger effective area, and a relatively simple core profile design is disclosed. The core refractive index profile comprises three segments (2,4,6). The adjustability of the height, width and location of the three core index profile segments, provides sufficient flexibility to meet a specification which calls for a dispersion shifted waveguide fiber capable of limiting four photon mixing or self phase modulation. The novel waveguide is characterized by a mode field diameter ≥ 7.5 microns and a total dispersion slope ≤ 0.070 ps/nm -km.

    19.
    发明专利
    未知

    公开(公告)号：ES2106757T3

    公开(公告)日：1997-11-16

    申请号：ES91119228

    申请日：1991-11-12

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA ADISESHAIA

    IPC: G02B6/12 ,  G02B6/13

    Abstract: A method of manufacturing planar optical waveguides in which a planar optical preform which is stretched to form a planar optical cane with substantially smaller cross-sectional dimensions than the original preform, and in which the optical circuitry pattern is achieved by lithographic techniques. Optical fiber preforms may be inserted in slots in a substrate to form the planar optical preform.

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