Optical Time Domain Reflectometry Using the Heterodyne Principle

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


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.


Direct Detection Insertion Loss Intermediate Frequency Local Oscillator Noise Equivalent Power 
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  1. /1/.
    P. HEALEY, D.J. MALYON: Electron, lett., 18 (1982), 862–863.CrossRefGoogle Scholar
  2. /2/.
    S. WRIGHT, K. RICHARDS, S.K. SALT, E. WALLBANK: Proc. 9th ECOC (1983), 177–182.Google Scholar
  3. /3/.
    P. HEALEY, R.C. BOOTH, B.E. DAYMOND-JOHN: Electron, lett., 20 (1984), 360–362.CrossRefGoogle Scholar
  4. /4/.
    S. WRIGHT, R.E. EPWORTH, D.F. SMITH, G.P. KING: Proc. OFS (1984), 347–350.Google Scholar
  5. /5/.
    M.C. TEICH: Applied Phys. lett., 14 (1969), 201–203.CrossRefGoogle Scholar
  6. /6/.
    R.E. EPWORTH, D.F. SMITH, S. WRIGHT: Proc. 10th ECOC (1984), 132–133.Google Scholar

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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