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In-service OTDR limitations in CWDM systems caused by spontaneous Stokes and anti-Stokes Raman scattering

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6 Author(s)
Reichmann, K.C. ; AT&T Labs.Res., Middletown, NJ, USA ; Frigo, N.J. ; Iannone, P.P. ; Zhou, X.
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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.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 7 )