High-precision passive optical networks for metropolitan area networks

This paper examines coherent passive optical networks (CPONs) and their role in advancing optical distribution networks (DNs). It covers CPON background, objectives, and impact on ODN efficiency, including AI integration for enhanced management. The two main standardization organizations, IEEE and ITU-T, are actively working on the next-generation PON, which appears to be a 100G-PON still based on intensity modulation. Recently, we have developed and characterized a real-time OFDM-PON prototype for data rates of 100 Gbit/s and beyond. The paper reviews relevant standards, network. [pdf]