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Optical Time Domain Reflectometry Using the Heterodyne Principle

  • R. Knoechel
  • S. Heckmann
  • J. Rybach
  • E. Brinkmeyer
Conference paper

Abstract

Optical time domain reflectometry (OTDR) is well established to measure the transmission characteristics (attenuation, splice loss, fault location) of optical-fibre communication channels. A short light-pulse (typical duration 1 µs) is launched into one end of the fibre and the resulting backscatter response is evaluated. Present OTDR-systems are mostly using direct-detection receivers.

Keywords

Direct Detection Insertion Loss Intermediate Frequency Local Oscillator Noise Equivalent Power 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1986

Authors and Affiliations

  • R. Knoechel
    • 1
  • S. Heckmann
    • 2
  • J. Rybach
    • 2
  • E. Brinkmeyer
    • 3
  1. 1.Philips GmbH Forschungslaboratorium HamburgHamburg 54Germany
  2. 2.Geschäftsbereich N, Abteilung NMVF&G Nachrichtenkabel und -anlagenKöln 80Germany
  3. 3.Technische Universität Hamburg-HarburgHamburg 90Germany

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