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    SEMICONDUCTOR OR SOLID-STATE LASER HAVING AN EXTERNAL FIBER CAVITY
    1.
    发明专利
    SEMICONDUCTOR OR SOLID-STATE LASER HAVING AN EXTERNAL FIBER CAVITY 未知

    公开(公告)号：CA2400466A1

    公开(公告)日：2001-11-15

    申请号：CA2400466

    申请日：2001-02-21

    Applicant: CORNING INC

    Inventor： ZENTENO LUIS A ,  KUKSENKOV DMITIR V ,  MINELLY JOHN D

    IPC: H01S3/094 ,  H01S5/04 ,  H01S5/14 ,  H01S5/183 ,  H01S3/098 ,  H01S5/00

    Abstract: A semiconductor laser having an external cavity including a single-mode optical fiber (40). A Bragg grating (42) is written onto the fiber (40) whic h defines the end of the optical cavity, selects the lasing wavelength, and discriminates against the lasing of higher-order transverse modes in the mul ti- mode gain region. The system includes an optically active medium (28) with a mirror (22) attached to a first end, and optics (26) for coupling the multi- mode output from the second end of the active medium into the single-mode fiber (40). The active medium may be optically pumped (32) and may comprise a solid state laser rod or a semiconductor diode.

    Optical fiber with absorbing overclad glass layer
    3.
    发明专利
    Optical fiber with absorbing overclad glass layer 未知

    公开(公告)号：AU3459401A

    公开(公告)日：2001-09-24

    申请号：AU3459401

    申请日：2001-01-24

    Applicant: CORNING INC

    Inventor： ELLISON ADAM J G ,  MINELLY JOHN D ,  TRENTELMAN JACKSON P

    IPC: H01S3/067 ,  H01S3/08

    Abstract: The disclosed invention includes an amplifier fiber and methods of making the amplifier fiber. One embodiment of the inventive fiber includes a glass core and a glass cladding layer surrounding the glass core. The cladding glass layer has a refractive index which is less than a refractive index of the glass core. The fiber also includes a glass overclad layer surrounding the cladding layer. The overclad layer has a refractive index which is greater than the refractive index of the cladding layer. In another embodiment of the inventive fiber, the overclad layer is doped with an absorber. The absorber strips a mode of light propagating in the cladding from the cladding layer.

    Thulium doped fiber amplifier pumping scheme
    4.
    发明专利
    Thulium doped fiber amplifier pumping scheme 未知

    公开(公告)号：AU2002252616A1

    公开(公告)日：2002-12-03

    申请号：AU2002252616

    申请日：2002-04-08

    Applicant: CORNING INC

    Inventor： SAMSON BRYCE N ,  WALTON DONNELL T ,  TRAYNOR NICHOLAS J ,  MINELLY JOHN D

    IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/17

    Abstract: An optical amplifier comprises a trivalent thulium-doped optical fiber; a first pump light emitting device optically coupled to the fiber for generating a primary pump source at a first wavelength, and a second pump light emitting device optically coupled to the fiber for generating a secondary pump source at a second wavelength. In a preferred aspect of the present invention, the amplifier also includes a third (auxiliary) pump light emitting device optically coupled to the fiber for generating a third pump source at a third wavelength. Each of the amplification signals comprise at least one pre-selected wavelength. The first amplification signal has a wavelength pre-selected to provide a reduced noise figure for the amplifier. The second amplification signal has a wavelength pre-selected to increase the optical efficiency of the amplifier. The third amplification signal can have a wavelength pre-selected to populate the 3F4 energy level of the fiber, and to minimize depletion of the 3H6 ground state.

    L-BAND AMPLIFIER WITH DISTRIBUTED FILTERING
    8.
    发明专利
    L-BAND AMPLIFIER WITH DISTRIBUTED FILTERING 未知

    公开(公告)号：CA2381650A1

    公开(公告)日：2001-02-15

    申请号：CA2381650

    申请日：2000-07-10

    Applicant: CORNING INC

    Inventor： MINELLY JOHN D ,  YADLOWSKY MICHAEL J

    IPC: H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H04B10/17

    Abstract: An L-band optical amplifier has a rare earth doped gain medium including a filter distributed over a finite physical portion of the gain medium. The filter is distributed over between about 25 % to substantially the entire length of the gain medium. The distributed filter substantially eliminates o ut- of-band light emission (C-band ASE, 1520nm-1565nm) and thus improves the performance of L-band amplification (1565nm-1620nm). Examples of distributed filters include discrete type filters such as long period gratings, or continuous type filters such as rare earth doped, twin core fibers, non- adiabatically tapered fibers and coaxial resonant ring fibers.

    THULIUM DOPED FIBER AMPLIFIER PUMPING SCHEME
    9.
    发明申请
    THULIUM DOPED FIBER AMPLIFIER PUMPING SCHEME 审中-公开
    THULIUM DOPED光纤放大器泵浦方案

    公开(公告)号：WO02095882A3

    公开(公告)日：2003-06-05

    申请号：PCT/US0211112

    申请日：2002-04-08

    Applicant: CORNING INC

    Inventor： MINELLY JOHN D ,  SAMSON BRYCE N ,  TRAYNOR NICHOLAS J ,  WALTON DONNELL T

    IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/17

    CPC classification number: H01S3/06754 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1616 ,  H01S2301/02

    Abstract: An optical amplifier (fig. 3) comprises a trivalent thulium-doped optical fiber (120): a first pump light emitting device (110) optically coupled to the fiber for generating a primary pump source at a first wavelength, and a second pump light (180) emitting device optically coupled to the fiber (120) for generating a secondary pump source at a second wavelength. In a preferred aspect of the present invention, the amplifier also includes a third (auxiliary) pump light emitting device (130) optically coupled to the fiber (120) for generating a third pump source at a third wavelength. Each of the amplification signals comprise at least one pre-selected wavelength. The first amplification signal has a wavelength pre-selected to provide a reduced noise figure for the amplifier. The second amplification signal has a wavelength pre-selected to increase the optical efficiency of the amplifier. The third amplification signal can have a wavelength pre-selected to populate the 3F4 energy level of the fiber, and to minimize depletion of the 3H6 ground state.

    Abstract translation: 光放大器（图3）包括三价th掺杂光纤（120）：第一泵浦发光器件（110），光学耦合到光纤以产生第一波长的主泵浦源，以及第二泵浦光 （180）发光器件，其光耦合到所述光纤（120），用于在第二波长处产生次级泵浦源。 在本发明的优选方面，放大器还包括光纤耦合到光纤（120）的第三（辅助）泵浦发光器件，用于在第三波长处产生第三泵浦源。 每个放大信号包括至少一个预选波长。 第一放大信号具有预选的波长以便为放大器提供降低的噪声系数。 第二放大信号具有预选的波长以增加放大器的光效率。 第三放大信号可以具有预选的波长以填充光纤的3F4能级，并且最小化3H6基态的耗尽。

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