Carrier to Noise ratio Performance Evaluation for Optical SSB Signal in Radio over Fiber System

Abstract

The optical and wireless communication systems convergence will activate the potential capacity of photonic technology for providing the expected growth in interactive video, voice communication and data traffic services that are cost effective and a green communication service. The last decade growth of the broadband internet projects the number of active users will grow to over 2 billion globally by the end of 2014. Enabling the abandoned capacity of photonic signal processing is the promising solution for seamless transportation of the future consumer traffic demand. One emerging technology applicable in high capacity, broadband millimeter-wave access systems is Radio over Fiber also called Fiber To The Air (FTTA). In this paper, Optical SSB signal is specifically selected as it has tolerance for power degradation due to dispersion effects over a length of fiber and CNR (carrier to noise ratio) performance is evaluated in terms of phase noise from RF oscillator Linewidth and laser linewidth. Signal degradation is studied for various lengths of fibers in the presence of fiber chromatic dispersion.