Patents by Inventor Denis Bouchard

Denis Bouchard 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).

  • All-fiber phase controlled delay interferometer and method of making the same
    Patent number: 7480423
    Abstract: An all-fiber, phase controlled interferometer device is disclosed as well as its method of manufacture. This device is suitable for use in an optical DPSK demodulation system. It is comprised of two optical fiber couplers, each having two input and two output ports and two branches between the couplers of unequal length. The couplers have a splicing ratio of 50% over the wavelength operating range of the device. The two branches between the couplers are shaped to provide one bit of delay between the branches and are also shaped to make a compact device. Also, the two branches are formed in such a manner as to minimize birefringence in the device. In addition, a fiber heater is provided to heat the longer branch so as to obtain phase control of the interferometer. The method of producing such a device is also disclosed.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: January 20, 2009
    Assignee: ITF Laboratories Inc.
    Inventors: François Seguin, Denis-Alexandre Brulotte, Julien Tremblay, Claude Deslisle, Alexandre Wetter, Denis Bouchard, François Gonthier
  • All-fiber phase controlled delay interferometer and method of making the same
    Publication number: 20060198580
    Abstract: An all-fiber, phase controlled interferometer device is disclosed as well as its method of manufacture. This device is suitable for use in an optical DPSK demodulation system. It is comprised of two optical fiber couplers, each having two input and two output ports and two branches between the couplers of unequal length. The couplers have a splicing ratio of 50% over the wavelength operating range of the device. The two branches between the couplers are shaped to provide one bit of delay between the branches and are also shaped to make a compact device. Also, the two branches are formed in such a manner as to minimize birefringence in the device. In addition, a fiber heater is provided to heat the longer branch so as to obtain phase control of the interferometer. The method of producing such a device is also disclosed.
    Type: Application
    Filed: February 16, 2006
    Publication date: September 7, 2006
    Inventors: Francois Seguin, Denis-Alexandre Brulotte, Julien Tremblay, Claude Deslisle, Alexandre Wetter, Denis Bouchard, Francois Gonthier
  • Protection relay and protected control set with front wiring
    Patent number: 6512433
    Abstract: The invention concerns a protection relay, in particular of the thermal type, recessed relative to its front face (24), a recess acting as through passage for interconnection of the conductors (C) between the terminals of the relay control (23) and of the contact switch (16). The recess (27) is concealed in normal operation by a shutter consisting of a flap (26) or a fixed part (26′) of the housing (20). The interconnection conductors can consist of individual cables (C) or can be integrated to a precabling addition (40) housed in the recess.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 28, 2003
    Assignee: Schneider Electric Industries SA
    Inventors: Denis Bouchard, Daniel Sinthomez