SCM-WDM PONs in Presence of XPM and GVD

Abstract

In this chapter, a semi-analytical approach is used to evaluate and analyse the performance limitation of a SCM-WDM Passive Optical Network (PON) in the presence of Cross Phase Modulation (XPM) and Group Velocity Dispersion (GVD). In this context, a general expression for electrical average crosstalk noise power due to XPM and GVD was derived to measure the system performance for increasing number of WDM channels. Using the expression, it is found that XPM and GVD causes crosstalk in the system and imposes a power penalty as the WDM channels increases for a given channel spacing and modulating frequency. These results are extended to show that the system can be optimized to achieve a minimum BER of 10-9 by controlling the channel spacing and modulating frequency as the number of WDM channels increases.