Title :
In-service OTDR limitations in CWDM systems caused by spontaneous Stokes and anti-Stokes Raman scattering
Author :
Reichmann, K.C. ; Frigo, N.J. ; Iannone, P.P. ; Zhou, X. ; LeBlanc, M. ; Chabot, S.
Author_Institution :
AT&T Labs.Res., Middletown, NJ, USA
fDate :
7/1/2004 12:00:00 AM
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.
Keywords :
Raman spectra; optical fibre networks; optical time-domain reflectometry; telecommunication channels; telecommunication traffic; wavelength division multiplexing; CWDM; OTDR; anti-stokes Raman scattering; coarse wavelength-division-multiplexing systems; dark channels monitoring; in-service optical time-domain reflectometry; spontaneous stokes Raman scattering; traffic-bearing signals; Distributed feedback devices; Monitoring; Nonlinear optics; Optical attenuators; Optical feedback; Optical scattering; Optical sensors; Passive optical networks; Raman scattering; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.828515
