Patents by Inventor Mireille Marcerou

Mireille Marcerou 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).

  • Soliton pulse transmission over waveguide fiber lengths
    Patent number: 6681066
    Abstract: The invention proposes to increase the signal/noise ratio in a long-haul transmission system by: filtering noise (1) outside the range of wavelength of the signals transmitted, shifting (2) the wavelength of the signals transmitted, and filtering the signals transmitted (5) that have undergone wavelength shifting. The wavelength of the signals can be shifted by widening the spectrum of the signals or by optical phase conjugation.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: January 20, 2004
    Assignee: Alcatel
    Inventors: Jean-François Marcerou, Mireille Marcerou
  • Elimination of optical power limitation due to stimulated raman scattering in fiber optic links
    Patent number: 6529672
    Abstract: In a fiber optic link signal or pump sending power limitations due to stimulated Raman scattering are pushed back by using attenuation in the Raman gain region. Various techniques are proposed for limiting stimulated Raman scattering. In particular, the use of optical fiber lightly doped with dysprosium, the attenuation of which increases rapidly beyond 1 500 nm, is proposed. The use of this fiber to transport pump power at 1 480 nm towards remote amplifiers would enable injection of pump power up to an order of magnitude of 10 W, whereas the limit is currently 1.3 W. This technique would enable the range of links to be increased approximately 80 km.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: March 4, 2003
    Assignee: Alcatel
    Inventors: Jean-Pierre Blondel, Eric Brandon, Jean-François Marcerou, Mireille Marcerou
  • Soliton pulse transmission over waveguide fiber lengths
    Publication number: 20020159687
    Abstract: The invention proposes to increase the signal/noise ratio in a long-haul transmission system by:
    Type: Application
    Filed: August 16, 2001
    Publication date: October 31, 2002
    Inventors: Jean-Francois Marcerou, Mireille Marcerou