• DocumentCode
    1009726
  • Title

    Long-range 1.5 μm OTDR in a single-mode fibre using A D2 gas-in-glass laser (100 km) or a semiconductor laser (60 km)

  • Author

    Stone, J. ; Chraplyvy, A.R. ; Kasper, B.L.

  • Author_Institution
    Bell Laboratories, Crawford Hill Laboratory, Holmdel, USA
  • Volume
    21
  • Issue
    12
  • fYear
    1985
  • Firstpage
    541
  • Lastpage
    542
  • Abstract
    We have observed Rayleigh backscatter in a single-mode fibre in optical time domain refiectometry at 1.56 μm wavelength to a range of 100 km using a D2 gas-in-glass laser, and to 60 km at 1.53 μm using an injection laser. The low-noise receiver used an InGaAs PIN photodiode and a FET-input operational amplifier with averaging of 1000 times to provide signal/noise enhancement.
  • Keywords
    Rayleigh scattering; backscatter; measurement by laser beam; optical fibres; optical testing; time-domain reflectometry; 1.53 microns wavelength; 1.56 microns wavelength; D2 gas-in-glass laser; FET input operational amplifier; InGaAs PIN photodiode; Rayleigh backscatter; injection laser; low-noise receiver; optical fibres; optical time domain reflectometry; p-i-n diode; semiconductor laser; single-mode fibre;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19850382
  • Filename
    4251305
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1009726