• DocumentCode
    772289
  • Title

    High performance single mode OTDR using coherent detection and fibre amplifiers

  • Author

    Koyamada, Y. ; Nakamoto, Hiroyuki

  • Author_Institution
    NTT Transmission Syst. Labs., Ibaraki, Japan
  • Volume
    26
  • Issue
    9
  • fYear
    1990
  • fDate
    4/26/1990 12:00:00 AM
  • Firstpage
    573
  • Lastpage
    575
  • Abstract
    A high performance single mode OTDR has been constructed at 1.55 mu m using a DFB laser diode, laser diode pumped fibre amplifiers and a coherent detector, all suited to integration into a robust and portable instrument. A dynamic range of 33 dB has been attained with 1 mu s launch pulses, 1 MHz receiver bandwidth and 104 integrations. This result represents an increase of about 13 dB in performance over the standard version of the OTDR using a laser diode as a light source. It is comparable to the best previously reported value attained using a high power glass laser and a cooled detector.
  • Keywords
    fibre optics; optical fibres; optical testing; reflectometers; time-domain reflectometry; 1 MHz; 1.55 micron; DFB laser diode; coherent detection; fibre amplifiers; laser diode pumped amplifier; light source; optical fibre fault location; optical time domain reflectometer; receiver bandwidth; single mode OTDR;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19900375
  • Filename
    48761
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=772289