Patents by Inventor Mads. L Nielsen

Mads. L Nielsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • External cavity wavelength tunable laser device and optical output module
    Patent number: 8144738
    Abstract: In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: March 27, 2012
    Assignee: NEC Corporation
    Inventors: Kenji Sato, Jan De Merli, Kenji Mizutani, Koji Kudo, Shinya Sudo, Mads L. Nielsen
  • EXTERNAL CAVITY WAVELENGTH TUNABLE LASER DEVICE AND OPTICAL OUTPUT MODULE
    Publication number: 20110249690
    Abstract: In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).
    Type: Application
    Filed: June 21, 2011
    Publication date: October 13, 2011
    Applicant: NEC CORPORATION
    Inventors: Kenji SATO, Jan De MERLI, Kenji MIZUTANI, Koji KUDO, Shinya SUDO, Mads L. NIELSEN
  • External cavity wavelength tunable laser device and optical output module
    Patent number: 7991024
    Abstract: In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single-peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry-Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 2, 2011
    Assignee: NEC Corporation
    Inventors: Kenji Sato, Jan De Merli, Kenji Mizutani, Koji Kudo, Shinya Sudo, Mads. L Nielsen
  • EXTERNAL CAVITY WAVELENGTH TUNABLE LASER DEVICE AND OPTICAL OUTPUT MODULE
    Publication number: 20090141747
    Abstract: In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single-peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry-Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).
    Type: Application
    Filed: June 29, 2006
    Publication date: June 4, 2009
    Applicant: NEC Corporation
    Inventors: Kenji Sato, Jan De Merli, Kenji Mizutani, Koji Kudo, Shinya Sudo, Mads L. Nielsen