Optical ultra-wideband pulses for multi-channel radio-over-fiber communication systems

This study focuses on design of an optical ultra-wideband (UWB) pulse system with binary phase shift keying (BPSK) modulation scheme for multi-channel radio-over-fiber (ROF) communication environments. The generated optical Gaussian-like pulses can provide the several GHz bandwidths and improve the fiber dispersion and inter-symbol interference (ISI) problems for high-bit-rate transmissions. Moreover, a peak power detection scheme is adopted by the orthogonal frequency receiver, which can obtain a minimum channel bandwidth for the multi-channel systems. Finally, we set up a practical experimental system to prove our proposed schemes. Modeling analysis and experiment results demonstrate that the proposed system can provide a large capacity and lower interference noise for the multi-channel UWB wireless communications.