Comparison of digitized and analog radio-over-fiber systems over WDM-PON networks

As the rapid increase in mobile data traffics, radio-over-fiber(RoF) technology is one of the possible candidates for wireless signal distribution over fiber optic links. With the combination of wavelength division multiplexing (WDM) passive optical network (PON)s RoF technique has raised great interests because it provides a large number of high capacity mobile data channels on a single optical fiber. In this paper, link performances in terms of error vector magnitude (EVM) are investigated for analog and digitized RoF system over WDM-PON networks.