Patents by Inventor Jean Raffy

Jean Raffy 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).

  • Monomode optical source and an optical amplifying device tuneable in the near infra red and application to selective and regeneration amplifying devices
    Patent number: 4906949
    Abstract: The source and the device comprise a generator of a pump wave, optical means for coupling with a monomode optical fiber for guiding and highly confining the pump wave so that a four photon non linear interaction is created. At least one section of this optical fiber is disposed in a thermostat controlled enclosure associated with a temperature control device so as to obtain continuous tuning in a range of frequencies belonging to the near infra red spectrum.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: March 6, 1990
    Assignee: Thomson-CSF
    Inventors: Jean P. Pocholle, Jean Raffy, Michel Papuchon
  • Langmuir-Blodgett films usable in nonlinear optics
    Patent number: 4794045
    Abstract: A Langmuir-Blodgett film comprises at least one layer of amphiphilic molecules which are of two different types. The first type comprises molecules that are active in nonlinear optics. The second type consists of molecules that are inert or active in nonlinear optics. The mixture of these two types of molecules, in specified proportions, gives a film capable of radiating, perpendicular to the substrate, an optic wave which is a second harmonic with reference to an exciting wave.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: December 27, 1988
    Assignee: Thomson-CSF
    Inventors: Philippe Robin, Evelyne Chastaing, Jean P. Pocholle, Jean Raffy