Patents by Inventor Valerie Tholey

Valerie Tholey 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).

  • Surveillance system of a multi-wavelength ring network
    Patent number: 5943148
    Abstract: This network, intended for the transmission of information in optical form, wavelength multiplexed, comprises nodes (N1, N2) linked to each other by at least one optical fiber (F1), at least one wavelength being treated in each node. The system comprises unit (OF1, OF2, OS1, OS2) for superimposing on the information, for at least one wavelength per node, a surveillance signal whose frequency is outside the transmission band and, in each node, a surveillance circuit (CS1, CS2) for sampling at least one part of the surveillance signals, elaborating surveillance information in function of this part and sending this information to the processing units of the network. Application in optical telecommunications.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: August 24, 1999
    Assignee: France Telecom
    Inventors: Andre Hamel, Valerie Tholey, Jean Stoschek
  • Method for the management of wavelength-division-multiplexed optical loops
    Patent number: 5745269
    Abstract: A method for the management of a one-directional optical management loop with optical frequency multiplexing. This method is characterized chiefly in that the central station (T) instructs a secondary station (Si) that it designates to tune its reception to a determined wavelength (.lambda.j), on the basis of a message broadcast permanently to all the secondary stations (S1-Sn) on all the channels of the frequency multiplex. This method can be applied to any type of telecommunications network.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: April 28, 1998
    Assignee: France Telecom
    Inventors: Mouhammad Jamil Chawki, Ivan Le Gac, Valerie Tholey
  • Optical add-drop multiplexer using optical circulators and photoinduced Bragg gratings
    Patent number: 5726785
    Abstract: This multiplexer adds to a group of optical signals, whose wavelengths belong to a group of wavelengths (.lambda.1 . . . .lambda.N) and drop from said group of signals at least one optical signal having a given wavelength, chosen from within the wavelength group and comprises at least one optical circulator (C1, C2) having an input for receiving the group of signals and an output, an optical selection means (MS) coupled, on one side, to the circulator and which comprises at least one photoinduced Bragg grating (R1 . . .
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: March 10, 1998
    Assignee: France Telecom
    Inventors: Mouhammad Jamil Chawki, Eric Delevaque, Valerie Tholey
  • Telecommunications network organized in reconfigurable wavelength-division-multiplexed optical loops
    Patent number: 5576875
    Abstract: In a telecommunications network organized in wavelength-division-multiplexed optical loops, each loop has tunable reception means tuned as a function of the density of the network traffic, thus being capable of being reconfigured as a function of requirements. The disclosed system can be applied to public, private and data communication networks.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: November 19, 1996
    Assignee: France Telecom
    Inventors: Mouhammad J. Chawki, Valerie Tholey, Ivan Le Gac