• Patent Title: OTDR with increased precision and reduced dead zone using superposition of pulses with varying clock signal delay
  • Application No.: US16093038
    Application Date: 2017-05-24
  • Publication No.: US11287352B2
    Publication Date: 2022-03-29
  • Inventor: Lutz RappNuno Renato Duarte Pereira
  • Applicant: Xieon Networks S.à.r.l.
  • Applicant Address: LU Luxembourg
  • Assignee: Xieon Networks S.à.r.l.
  • Current Assignee: Xieon Networks S.à.r.l.
  • Current Assignee Address: LU Luxembourg
  • Priority: EP16171796 20160527
  • International Application: PCT/EP2017/062551 WO 20170524
  • International Announcement: WO2017/202916 WO 20171130
  • Main IPC: G01M11/00
  • IPC: G01M11/00
OTDR with increased precision and reduced dead zone using superposition of pulses with varying clock signal delay
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.
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