Modal noise in 850nm VCSEL-based radio over fiber systems for manifold applications

The combination of the 850nm VCSEL as optical source and of the Standard Single Mode Fiber as optical channel realizes an attractive solution for the distribution of the wireless signal through the Radio over Fiber technique. Potential causes of impairment which are however present in this solution are analyzed, and some conditions to be respected in view of the application of these systems in various scenarios are then identified.