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    METHOD FOR FORMING GRATING AT OPTICAL WAVEGUIDE
    2.
    发明专利
    METHOD FOR FORMING GRATING AT OPTICAL WAVEGUIDE 失效

    公开(公告)号：JPH1054914A

    公开(公告)日：1998-02-24

    申请号：JP6775297

    申请日：1997-03-21

    Applicant: CORNING INC

    Inventor： MODAVIS ROBERT ADAM

    IPC: G02B5/18 ,  G02B5/26 ,  G02B6/02 ,  G02B6/10 ,  G02B6/124 ,  G02B6/38 ,  G02B6/16

    Abstract: PROBLEM TO BE SOLVED: To provide a method for writing Bragg gratings from the side at an optical waveguide fiber by using a high-power UV light source of a relatively low coherence length, i.e., about 300μm together with a phase mask and an adjustable interferometer and the device therefor. SOLUTION: This method has the interferometer having precisely freely adjustable condensing and orienting parts 10. The phase mask 4 irradiated with UV rays is used as the light source 2 of the interferometer. The appropriate interferometer parts 10 are respectively slightly adjusted +/-0.75 deg. by the free adjustability of the interferometer, by which the wiring of the Bragg gratings to filter a wavelength in a range of 1275 to 1575nm is made possible.

    ADDITIONALLY DOPED ATHERMAL OPTICAL WAVEGUIDE DEVICE
    3.
    发明专利
    ADDITIONALLY DOPED ATHERMAL OPTICAL WAVEGUIDE DEVICE 失效

    公开(公告)号：JPH10274718A

    公开(公告)日：1998-10-13

    申请号：JP35342197

    申请日：1997-12-22

    Applicant: CORNING INC

    Inventor： BERKEY GEORGE EDWARD ,  LIOU WAN-I LISA ,  MODAVIS ROBERT ADAM ,  NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

    IPC: C03B37/014 ,  C03C13/04 ,  G02B6/02 ,  G02B6/10 ,  G02B6/12 ,  G02B6/122 ,  G02B6/293 ,  G02F1/313 ,  G02F1/03

    Abstract: PROBLEM TO BE SOLVED: To suppress a spectral change caused by a temp. change and to make an optical waveguide athermal by blending constituent components of the waveguide with boron. SOLUTION: An optical waveguide having reduced temp. dependency is produced by doping a waveguide with a refractive index varying dopant capable of optical waveguide and doping the waveguide with a temp. dependence suppressing dopant which reduces the temp. dependency of the waveguide. The objective optical waveguide device contains an optical waveguide silica core doped with a refractive index increasing dopant and a sufficient amt. of an additional dopant made of B2 O3 and suppresses a thermal spectral change in the device due to a temp. change. The refractive index increasing dopant is preferably GeO2 . The optical waveguide device includes a transmission filter including a long-period fiber lattice and Mach-zehnder interferometer. The optical waveguide device is e.g. an optical waveguide tube, an optical fiber or a Mach-zehnder coupler device.

    4.
    发明专利
    未知

    公开(公告)号：DE69522051D1

    公开(公告)日：2001-09-13

    申请号：DE69522051

    申请日：1995-05-29

    Applicant: CORNING INC

    Inventor： MODAVIS ROBERT ADAM ,  WEBB THOMAS WILLIAM

    IPC: G02B6/32 ,  G02B6/02 ,  G02B6/14 ,  G02B6/42 ,  H01S5/00

    Abstract: The optical fibre microlens includes a single-mode optical fibre having a core and a cladding, a longitudinal fibre axis extending through the core. A wedge-shaped microlens is provided on one end of the fibre, the microlens including a first pair of surfaces that intersect at a line that bisects the fibre core. A second pair of surfaces intersect the first pair of surfaces, the slopes of the first and second pairs of surfaces being theta and phi , where phi is greater than theta . The slopes of the first and second pairs of surfaces are measured with respect to a plane perpendicular to the longitudinal fibre axis.

    ANAMORPHIC MICROLENS FOR COUPLING OPTICAL FIBERS TO ELLIPTICAL LIGHT BEAMS
    7.
    发明专利
    ANAMORPHIC MICROLENS FOR COUPLING OPTICAL FIBERS TO ELLIPTICAL LIGHT BEAMS 未知

    公开(公告)号：CA2149987A1

    公开(公告)日：1995-12-23

    申请号：CA2149987

    申请日：1995-05-23

    Applicant: CORNING INC

    Inventor： MODAVIS ROBERT ADAM ,  WEBB THOMAS WILLIAM

    IPC: G02B6/32 ,  G02B6/02 ,  G02B6/14 ,  G02B6/42 ,  H01S5/00

    Abstract: To couple the elliptical mode field light beam of a laser radiation source to a circularly symmetric singlemode optical fiber, the end of the fiber is provided with an anamorphic lens. The double wedge-shaped lens provides high coupling efficiency and is easily constructed. Other anamorphic lenses are also disclosed. A single wedge lens can provide high coupling efficiency if it is formed on the end of a coupling fiber which has a core that is elliptically-shaped in cross-section, the line of intersection of the two surfaces forming the lens being aligned with the major axis of the elliptical fiber core.

    Method of forming a grating in an optical waveguide
    9.
    发明专利
    Method of forming a grating in an optical waveguide 未知

    公开(公告)号：AU1633297A

    公开(公告)日：1997-10-02

    申请号：AU1633297

    申请日：1997-03-17

    Applicant: CORNING INC

    Inventor： MODAVIS ROBERT ADAM

    IPC: G02B5/18 ,  G02B5/26 ,  G02B6/02 ,  G02B6/10 ,  G02B6/124 ,  G02B6/38

    Abstract: A method and apparatus for writing a Bragg grating in a photosensitive optical waveguide is disclosed. The novel method comprises an interferometer having precisely adjustable light collecting and directing components. A phase mask illuminated with ultraviolet light is used as the interferometer light source. The adjustability of the interferometer allows the writing of Bragg gratings for filtering wavelengths in the range 1275 nm to 1575 nm while adjusting the appropriate interferometer elements by only +/- 0.75 DEG each.

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