Next-generation PON-part III: System specifications for XP-PON

With the knowledge that XG-PON is of primary interest to service providers as their preferred next generation optical access system, the investigation next turns to determining its technical specifications. This article presents the current thinking on the XG-PON systems. It presents a rough outline of the system design for the wavelength plan, the power budget, the protocol, and the management and service model. This work is likely to be the basis for standardization in upcoming ITU-T recommendations.