In-Service OTDR Limitations in CWDM Systems Caused by Spontaneous Stokes and Anti-Stokes Raman Scattering

Authors:
  • MLM. Leblanc
    M. Leblanc
  • SCS. Chabot
    S. Chabot

Abstract
We demonstrate that traffic-bearing signals in coarse wavelength-division-multiplexing systems can limit in-service optical time-domain reflectometry sensitivity on presumably "dark" channels being monitored. This effect is due to spontaneous Stokes and anti-Stokes Raman scattering into the wide spectral bands.