Patents by Inventor Michael Schlak

Michael Schlak 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).

  • Optical differentiator description
    Publication number: 20040062470
    Abstract: Optical device (1) for the differentiation of a first optical signal and an optical signal lagging behind the first, in which the differentiation is represented by a signal carried by a continuous wave passing through the two arms (5, 6) of an interferometer comprising media with an index that depends on the optical power passing through them. The delayed signal is the first signal fed back to one of the arms through a delay (7).
    Type: Application
    Filed: September 25, 2003
    Publication date: April 1, 2004
    Inventors: Alexandre Shen, Jean-Guy Provost, Fabrice Devaux, Bernd Sartorius, Tolga Tekin, Michael Schlak, Christopher Janz
  • Optical differentiation device
    Patent number: 6628855
    Abstract: An optical device for the differentiation of a first optical signal and an optical signal lagging behind the first, in which the differentiation is represented by a signal carried by a continuous wave passing through the two arms of an interferometer including media with an index that depends on the optical power passing through them. The delayed signal is the first signal fed back to one of the arms through a delay.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: September 30, 2003
    Assignee: Alcatel
    Inventors: Alexandre Shen, Jean-Guy Provost, Fabrice Devaux, Bernd Sartorius, Tolga Tekin, Michael Schlak, Cristopher Janz
  • Optical NRZ-RZ format converter
    Patent number: 6625338
    Abstract: Converter of an NRZ signal with a bit duration T comprising an interferometric structure (10) with two arms (9, 11) equipped with a medium (13, 15) with an index that varies depending on the optical power passing through the said medium. The NRZ signal to be converted is input into each of the arms (9, 11). The output signal (7) from the structure is reinput through a means (16) introducing a delay of T/2 in one of the arms (11). The signal at the output (7) is then the NRZ signal converted to the RZ format.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: September 23, 2003
    Assignee: Alcatel
    Inventors: Alexandre Shen, Fabrice Devaux, Michael Schlak, Tolga Tekin
  • Optical NRZ-RZ format converter
    Publication number: 20020018612
    Abstract: Converter of an NRZ signal with a bit duration T comprising an interferometric structure (10) with two arms (9, 11) equipped with a medium (13, 15) with an index that varies depending on the optical power passing through the said medium. The NRZ signal to be converted is input into each of the arms (9, 11). The output signal (7) from the structure is reinput through a means (16) introducing a delay of T/2 in one of the arms (11).
    Type: Application
    Filed: May 10, 2001
    Publication date: February 14, 2002
    Applicant: ALCATEL
    Inventors: Alexandre Shen, Fabrice Devaux, Michael Schlak, Tolga Tekin