Novel centralized-light-source WDM-RoF system with OFDM-CPM downstream and OOK upstream

In this paper, we have proposed and demonstrated a novel lightwave centralized wavelength division multiplexing radio-over-fiber (WDM-RoF) system employing OFDM-CPM generation and carrier-reuse technique. The 4 × 2.5-Gb/s OFDM-CPM wireless signal and upstream OOK signal are transmitted over 25 km SMF-28 successfully. We further compare the OFDM-CPM signal with an OFDM-QPSK signal, and the experimental results suggest that OFDM-CPM modulation scheme will be a promising candidate for future WDM-RoF system.