Patents by Inventor Lionel Expert

Lionel Expert 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).

  • Method of producing and improving an optical transmission line, and associated compensation modules
    Patent number: 7187824
    Abstract: The invention relates to methods of producing and improving an optical transmission line comprising the combination of a line optical fiber and an original or modified module for compensating the chromatic dispersion of said line optical fiber.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: March 6, 2007
    Assignee: Alcatel
    Inventors: Ludovic Fleury, Pierre Sillard, Alain Bertaina, Florent Beaumont, Maxine Gorlier, Louis-Anne de Montmorillon, Pascale Nouchi, Lionel Expert
  • Dispersion-compensating fiber using a higher-order mode
    Patent number: 6912348
    Abstract: The invention relates to a dispersion-compensating optical fiber for use in wavelength division multiplex transmission systems, said fiber including successively, from the center toward the periphery, a core having a varying index profile and then a cladding having a constant index, enabling the propagation, for a given operating spectral range greater than 30 nm, of at least one higher-order mode in addition to the LP01 fundamental mode, the index profile of the core being determined so that, for said higher mode, and for said operating spectral range, the chromatic dispersion is less than ?150 ps/nm.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: June 28, 2005
    Assignee: Alcatel
    Inventors: Pierre Sillard, Lionel Expert, Pascale Nouchi
  • Optical fiber for wavelength division multiplex transmission networks
    Patent number: 6895153
    Abstract: An optical fiber has three or four core slices including one or more buried slices and a raised central slice. The buried slice or each of the buried slices is very deeply buried. The fiber has a zero dispersion wavelength of less than 1 460 nm. It has a chromatic dispersion in the vicinity of 5 ps/nm.km and a dispersion slope in the vicinity of 0.03 ps/nm2.km at a wavelength of 1 550 nm.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: May 17, 2005
    Assignee: Alcatel
    Inventors: Louis-Anne De Montmorillon, Pierre Sillard, Lionel Expert, Denis Molin, Ludovic Fleury, Bruno Dany
  • Optical fiber
    Publication number: 20040131323
    Abstract: An optical fiber has three or four core slices including one or more buried slices and a raised central slice. The buried slice or each of the buried slices is very deeply buried. The fiber has a zero dispersion wavelength of less than 1 460 nm. It has a chromatic dispersion in the vicinity of 5 ps/nm.km and a dispersion slope in the vicinity of 0.03 ps/nm2.km at a wavelength of 1 550 nm.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 8, 2004
    Applicant: ALCATEL
    Inventors: Louis-Anne De Montmorillon, Pierre Sillard, Lionel Expert, Denis Molin, Ludovic Fleury, Bruno Dany
  • Method of producing and improving an optical transmission line, and associated compensation modules
    Publication number: 20040028325
    Abstract: The invention relates to methods of producing and improving an optical transmission line comprising the combination of a line optical fiber and an original or modified module for compensating the chromatic dispersion of said line optical fiber.
    Type: Application
    Filed: July 17, 2003
    Publication date: February 12, 2004
    Applicant: ALCATEL
    Inventors: Ludovic Fleury, Pierre Sillard, Alain Bertaina, Florent Beaumont, Maxine Gorlier, Louis-Anne de Montmorillon, Pascale Nouchi, Lionel Expert
  • Dispersion-compensating fiber using a higher-order mode
    Publication number: 20030190127
    Abstract: The invention relates to a dispersion-compensating optical fiber for use in wavelength division multiplex transmission systems, said fiber including successively, from the center toward the periphery, a core having a varying index profile and then a cladding having a constant index, enabling the propagation, for a given operating spectral range greater than 30 nm, of at least one higher-order mode in addition to the LP01 fundamental mode, the index profile of the core being determined so that, for said higher mode, and for said operating spectral range, the chromatic dispersion is less than −150 ps/nm.
    Type: Application
    Filed: November 7, 2002
    Publication date: October 9, 2003
    Applicant: ALCATEL
    Inventors: Pierre Sillard, Lionel Expert, Pascale Nouchi