A Bi-directional Radio-over-Fiber System with All-optical Up-converted DPSK for Downstream and Re-modulated OOK for Upstream

We propose and demonstrate a novel full-duplex radio-over-fiber system using OOK re-modulation of up-converted downstream DPSK signal for upstream connection. The bi-directional 2.5 Gbits/s data is successfully transmitted over 40 km SMF-28 with <2 dB power penalty