Evolution, Challenges and Enabling Technologies for Future WDM-Based Optical Access Networks

Evolution, Challenges and Enabling Technologies for Future WDM-Based Optical Access Networks

Abstract

Upgrading current-generation time division multiplexing (TDM)-based optical access networks will be a challenge in the future when end-user demand outgrows current network capacity. Wavelength division multiplexing (WDM) has been considered as an ideal solution to extend the capacity of optical networks without drastically changing the fiber infrastructure. In this paper we investigate key issues and review enabling technologies for upgrading current-generation optical access networks with WDM techniques.