Patents by Inventor Nuno Renato DUARTE PEREIRA

Nuno Renato DUARTE PEREIRA 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).

  • OTDR with increased precision and reduced dead zone using superposition of pulses with varying clock signal delay
    Patent number: 11287352
    Abstract: A method for determining the position of an irregularity in an optical transmission fiber using an optical time domain reflectometer, the method comprising the steps of emitting a succession of sampling light pulses into the optical transmission fiber, detecting reflected light pulses resulting from the reflection of the sampling light pulses at the irregularity in the optical transmission fiber and generating corresponding time-dependent detection signals, wherein different delays are associated with detection signals corresponding to different sampling light pulses, obtaining a combined signal from the detection signals, and analyzing the combined signal for determining the position of the irregularity in the optical transmission fiber with respect to the optical time domain reflectometer, wherein the combined signal corresponds to a superposition of the detection signals.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: March 29, 2022
    Assignee: XIEON NETWORKS S.a.r.l.
    Inventors: Lutz Rapp, Nuno Renato Duarte Pereira
  • OTDR WITH INCREASED PRECISION AND REDUCED DEAD ZONE USING SUPERPOSITION OF PULSES WITH VARYING CLOCK SIGNAL DELAY
    Publication number: 20190128775
    Abstract: A method for determining the position of an irregularity in an optical transmission fiber using an optical time domain reflectometer, the method comprising the steps of emitting a succession of sampling light pulses into the optical transmission fiber, detecting reflected light pulses resulting from the reflection of the sampling light pulses at the irregularity in the optical transmission fiber and generating corresponding time-dependent detection signals, wherein different delays are associated with detection signals corresponding to different sampling light pulses, obtaining a combined signal from the detection signals, and analyzing the combined signal for determining the position of the irregularity in the optical transmission fiber with respect to the optical time domain reflectometer, wherein the combined signal corresponds to a super-position of the detection signals.
    Type: Application
    Filed: May 24, 2017
    Publication date: May 2, 2019
    Applicant: Xieon Networks S.a.r.l.
    Inventors: Lutz RAPP, Nuno Renato DUARTE PEREIRA