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    Optical waveguide lens and method of fabrication
    21.
    发明专利
    Optical waveguide lens and method of fabrication 未知

    公开(公告)号：AU4756301A

    公开(公告)日：2001-10-03

    申请号：AU4756301

    申请日：2001-03-19

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA A ,  HIMMELREICH JOHN ,  UKRAINCZYK LJERKA ,  WILLIAMS GREGORY E

    IPC: G02B3/00 ,  G02B6/02 ,  G02B6/255 ,  G02B6/26 ,  G02B6/293 ,  G02B6/32 ,  G02B6/34

    Abstract: A spherical lens formed by fusing a generally homogenous glass lens blank to the distal end of an optical fiber, heating and tensioning the lens blank to separate it in two segments with the segment attached to the optical fiber defining a tapered end, and heating the lens blank above its softening point so that the spherical lens forms. The lens blank is fabricated from a 4 weight percent borosilicate glass having a softening point less than that of the core of the optical fiber. The lens member defines a throat region adjacent the optical fiber whose cross-sectional dimension is substantially greater than the diameter of the optical fiber, but substantially less than the diameter of the spherical lens.

    POLED ELECTRO-OPTIC DEVICE AND METHOD
    23.
    发明专利
    POLED ELECTRO-OPTIC DEVICE AND METHOD 未知

    公开(公告)号：CA2393000A1

    公开(公告)日：2001-06-07

    申请号：CA2393000

    申请日：2000-11-02

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA A

    IPC: G02B6/02 ,  C03B37/012 ,  C03B37/026 ,  G02B6/10 ,  G02F1/01 ,  G02F1/355 ,  G02F1/383 ,  G02B6/13

    Abstract: A resultant device and a method for making a frame structure for use as a poled optical device (10) includes providing a glass preform (30) having a poling area (12) and a waveguiding core area (16). At least one feedstock (2 4) is assembled into the waveguiding core area (16). The at least one feedstock (24) is separated from the poling area (12). The glass preform (30) and the at least one feedstock (24) are heated (36) and drawn into a smaller diameter (13) to form an optical waveguide.

    MULTIPLICADOR Y DESMULTIPLICADOR DE REFLEXION MULTIPLE.
    26.
    发明专利
    MULTIPLICADOR Y DESMULTIPLICADOR DE REFLEXION MULTIPLE. 未知

    公开(公告)号：MX9708146A

    公开(公告)日：1998-02-28

    申请号：MX9708146

    申请日：1997-02-11

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA A

    IPC: G02B6/293 ,  G02B6/12 ,  G02B6/34 ,  G02B27/14 ,  G02F1/21 ,  H04B10/27 ,  H04B10/29 ,  H04B10/67 ,  H04J14/00 ,  H04J14/02

    Abstract: Se dispersan señales opticas de acuerdo a su longitud de onda mediante un generador de diferencia de longitud de trayecto optico que acopla una trayectoria individual que transmite una pluralidad de diferentes señales de longitud de onda a trayectorias multiples, transmitiendo por separado las diferentes señales de longitud de onda; el generador de longitud de trayecto optico puede formarse mediante una pila reflectora que tiene una pluralidad de superficies parcialmente reflectora para reflejar porciones sucesivas de la energía de cada una de las diferentes señales de longitud de onda a lo largo de trayectos opticos de diferente longitud.

    27.
    发明专利
    未知

    公开(公告)号：BR9601344A

    公开(公告)日：1998-01-13

    申请号：BR9601344

    申请日：1996-04-12

    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: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/18

    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.

    METHOD OF MAKING POLARIZATION RETAINING FIBER
    30.
    发明专利
    METHOD OF MAKING POLARIZATION RETAINING FIBER 未知

    公开(公告)号：CA2054873A1

    公开(公告)日：1992-05-10

    申请号：CA2054873

    申请日：1991-11-04

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  HAWK ROBERT M ,  TARCZA STEVEN H

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

    Abstract: Disclosed is a method of making a polarization retaining single-mode optical fiber. Longitudinal grooves are formed on opposite sides of a cylindrically-shaped core preform having a glass core surrounded by cladding glass. The core preform is inserted into a glass tube, the tube is shrunk onto the core preform, and the interface between the core preform and the tube is fused to form a solid preform having longitudinal apertures on opposite sides of the core. An etchant gas is flowed through the apertures to enlarge the apertures into holes having a substantially round cross-section. Inserted into each aperture is a stress rod formed of glass having a coefficient of expansion different from that of the cladding glass. The resultant draw blank is drawn to form a single-mode optical fiber having a core that is subjected to a stress-induced birefringence.

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