中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

49 records (took 0.023 seconds)

    OPTICAL DIFFRACTION GRATING DEVICE HAVING ADJUSTABLE CHIRP
    5.
    发明专利
    OPTICAL DIFFRACTION GRATING DEVICE HAVING ADJUSTABLE CHIRP 失效

    公开(公告)号：JP2000137197A

    公开(公告)日：2000-05-16

    申请号：JP30793299

    申请日：1999-10-29

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： EGGLETON BENJAMIN JOHN ,  ROGERS JOHN A ,  STRASSER THOMAS ANDREW

    IPC: H01S3/06 ,  G02B5/18 ,  G02B6/00 ,  G02B6/02 ,  G02B6/24 ,  G02B6/34 ,  G02F1/01 ,  H01S3/067 ,  H01S3/10 ,  H04B10/17 ,  H04B10/29 ,  G02B6/10

    Abstract: PROBLEM TO BE SOLVED: To obtain an optical diffraction grating device having an adjustable chirp. SOLUTION: The optical waveguide diffraction grating having an adjustable chirp includes a waveguide diffraction grating thermally brought into contact with an electrically controllable heat converting substrate whose temperature is changed along the length of the diffraction grating (A). The heat converting substrate can generate heat on a fiber, or remove heat from the fiber, and temperature slope can be generated along the diffraction grating. In an execution example, the heat converting substrate is constituted as a resistance film whose local resistance is changed along the length of the diffraction grating (B). Currents running through the thin film can generate the temperature slope along the diffraction grating almost proportional to the local resistance of the thin film, and the size of the chirp can be adjusted by the currents. Thus, this obtained device can be made simple, compact, and efficiently power.

    WAVELENGTH SHIFT DEVICE BY MAGNETOSTRICTION EFFECT AND OPTICAL COMMUNICATION SYSTEM HAVING WAVELENGTH SHIFT DEVICE
    6.
    发明专利
    WAVELENGTH SHIFT DEVICE BY MAGNETOSTRICTION EFFECT AND OPTICAL COMMUNICATION SYSTEM HAVING WAVELENGTH SHIFT DEVICE 失效

    公开(公告)号：JP2000098268A

    公开(公告)日：2000-04-07

    申请号：JP26975299

    申请日：1999-09-24

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ADAMS LAURA ELLEN ,  ESPINDOLA ROLANDO PATRICIO ,  JIN SUNGHO ,  MAVOORI HAREESH ,  STRASSER THOMAS ANDREW

    IPC: G02B26/00 ,  G02B6/34 ,  G02F1/01

    Abstract: PROBLEM TO BE SOLVED: To obtain a device which is programmable for the purpose of a wavelength shift and dispersion correction of colors and may be latched by regulating the spacings between grating elements by the expansion or contraction of a body by a magnetic field and the consequently induced elastic strain and regulating the wavelength corresponse of the device. SOLUTION: This wavelength shift device includes a waveguide of a certain length, such as an optical fiber 11, having a grating region 12, the slender magnetostriction effect body 14 bonded along the length of the gratings 12 to the gratings in the bond region 13 and a source for exposing the body 14 to the magnetic field. A source for supplying the magnetic field, for example, a solenoid 19 is installed in proximity to the body 14 or a magnet 15 or both thereof to magnetize the magnet 15 and to distort the body 14. The body 14 is expanded or shrunk by the magnetic field, by which the elastic strain is induced in the body 14 and the spacings between the grating elements and the wavelength response of the device are regulated.

    ARTICLE HAVING INCLINED GRATING WITHIN SINGLE MODE WAVEGUIDE
    7.
    发明专利
    ARTICLE HAVING INCLINED GRATING WITHIN SINGLE MODE WAVEGUIDE 失效

    公开(公告)号：JP2002048929A

    公开(公告)日：2002-02-15

    申请号：JP2001163589

    申请日：2001-05-31

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： STRASSER THOMAS ANDREW ,  WESTBROOK PAUL STEPHEN

    IPC: G02B5/20 ,  G02B5/18 ,  G02B6/02 ,  G02B6/10 ,  G02B6/16

    Abstract: PROBLEM TO BE SOLVED: To provide a refractive index grating which is accompanied by a photosensitive profile including at least one 'adjustment area' in a core of a waveguide, in a single mode inclined grating within an optical waveguide. SOLUTION: When the photosensitive profile of the waveguide is suitably selected, a result bringing 'supernal' in a coupling from LP01,f to LP01,b is obtained. That is, the angular range of an inclined angle θ that a core mode coupling is substantially zero (that is, smaller than -30 dB) is larger than 0.1 deg., or is larger than 0.2 deg. or 0.5 deg. and is largely increased compared to an angular range obtained when the 'adjustment area' does not exist within the core of the waveguide. When the angular range is increased, the manufacture of the grating is more facilitated. In a favorable embodiment, the grating is provided with a large cladding loss (larger than 20 dB) and a band width (larger than 20 nm). A method for trimming the grating is also disclosed.

    ARTICLE HAVING OPTICAL FIBER LIGHT SOURCE
    8.
    发明专利
    ARTICLE HAVING OPTICAL FIBER LIGHT SOURCE 失效

    公开(公告)号：JP2001094182A

    公开(公告)日：2001-04-06

    申请号：JP2000239401

    申请日：2000-08-08

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ALES GAELLE ,  ESPINDOLA ROLANDO PATRICIO ,  STRASSER THOMAS ANDREW

    IPC: G01C19/72 ,  G02B6/02 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H04B10/00 ,  H04B10/22 ,  G02B6/10

    Abstract: PROBLEM TO BE SOLVED: To realize a high-power and wide-band SFS(superfluorescence fiber light source). SOLUTION: A light source 10 has first and second SE-RE doped optical fibers 11 and 12. These optical fibers are arranged, so that light can be propagated in the axial direction of the light source 10 from the fiber 11 to the fiber 12. Moreover, the light source 10 has a coupler 17 to couple a light source 14 of a first pumping light with the first pumping light in the downstream direction of the fiber 11. Moreover, the light source 10 has a light source 15 of second pumping light, a coupler 18 for coupling the second pumping light with the film 12 in the upstream direction of the light source 10 and an optical isolator 13 arranged between the films 11 and 12 so that the light, which is propagated from the fiber 12 to the upstream direction, hardly reaches the fiber 11.

    ARTICLE COMPOSED OF BRAGG LATTICE OF OPTICAL WAVEGUIDE OF MINORITY MODE
    10.
    发明专利
    ARTICLE COMPOSED OF BRAGG LATTICE OF OPTICAL WAVEGUIDE OF MINORITY MODE 失效

    公开(公告)号：JP2001343545A

    公开(公告)日：2001-12-14

    申请号：JP2001163604

    申请日：2001-05-31

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： STRASSER THOMAS ANDREW ,  WESTBROOK PAUL STEPHEN

    IPC: G02B6/02 ,  G02B6/12 ,  G02B6/14 ,  G02B6/34

    Abstract: PROBLEM TO BE SOLVED: To provide an article composed of an optical waveguide mode converter which converts the light of wavelength λ from a given wave-guided mode (for example, LP01,f) to another mode (for example, LP02,b) particularly in an optical waveguide of minority mode with respect to the optical waveguide of minority and an optical communication system equipped with such a waveguide. SOLUTION: This article composed of Bragg lattice of optical waveguide of minority mode comprises the optical wave-guided mode converter which converts the light of wavelength λ from a given wave-guided mode to another mode in the optical waveguide of minority mode and the mode converter comprises a distributed refractive index lattice in the waveguide and is correlated with the plural coupling strengths. In addition, the waveguide of minority mode has a dopant distribution which is selected so as to offer a refractive index profile n (r) and a photosensitive profile p (r) to the waveguide, p (r) has photosensitivity of at least two different levels in the core and n (r), p (r) and θ are selected in such a manner that the plurality among the coupling strengths are simultaneously nullified and at least one among the coupling strengths are substancially maximized.

Patent Agency Ranking