A hybrid wireless-over-fiber transmission system based on multiple injection-locked FP LDs

A hybrid wireless-over-fiber (WoF) transmission system based on multiple injection-locked Fabry-Perot laser diodes (FP LDs) is proposed and demonstrated. Different from traditional hybrid WoF transmission systems which need multiple distributed feedback (DFB) LDs to support different kind of services, this proposed systems employ multiple injection-locked FP LDs to provide different kind of applications. Such a hybrid WoF transmission system delivers downstream intensity-modulated 20-GHz microwave (MW)/60-GHz millimeter-wave (MMW)/550-MHz cable television (CATV) signals and upstream phase-remodulated 20-GHz MW signal. Over a 40-km single-mode fiber (SMF) and a 4-m radio frequency (RF) wireless transport, bit error rate (BER), carrier-to-noise ratio (CNR), composite second-order (CSO), and composite triple-beat (CTB) perform brilliantly.