Impact of physical effects onto the optimal signal power in CWDM optical networks

Aron Szabo, Szilard Zsigmond, Tibor Cinkler
2008 2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing  
Nowadays in optical networks there is a trend to extend the maximum transmission distance. Several technical solutions are known but the simplest one is to increase the signal power in the optical fiber. However, the nonlinear behavior of the optical fiber limits the signal power e.g. the span of the all-optical network. This paper presents an analytical model and calculation results for the signal quality degradation in an 8-channel and an 18-channel, 2.5 Gbps coarse
more » ... xing (CWDM) system. Based on the proposed model and performed analysis we give the optimal value of the signal power at the transmitter point. Index terms-Coarse wavelength-division-multiplexing (CWDM), dense wavelength-division-multiplexing (DWDM), Q-factor, stimulated Raman-scattering (SRS), group velocity dispersion (GVD), relative intensity noise (RIN) I.
doi:10.1109/csndsp.2008.4610797 fatcat:i2c53vzhnvftbk7qzypbgesvwm