Full-duplex radio-over-fiber transport systems based on direct-detection scheme

A full-duplex radio-over-fiber (ROF) transport system based on direct-detection scheme is proposed and experimentally demonstrated. In this approach, the RF power degradation introduced by fiber dispersion can be cancelled since the optical carrier and one of the sidebands are eliminated before detecting. A data stream of 70 Mbps transmitted over an 80-km single-mode fiber (SMF) transmission both for down/up-link with good bit error rate (BER) performance was achieved.