Open AccessPerformances improvement in radio over fiber link through carrier suppression using Stimulated Brillouin scattering
Author(s) -
Lan Liu,
Shilie Zheng,
Xianmin Zhang,
Xiaofeng Jin,
Hao Chi
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.011827
Subject(s) - modulation index , radio over fiber , brillouin scattering , spurious free dynamic range , optics , sideband , carrier to noise ratio , modulation (music) , materials science , optical link , radio frequency , optical fiber , dynamic range , power (physics) , physics , signal to noise ratio (imaging) , computer science , telecommunications , pulse width modulation , quantum mechanics , acoustics
The performances of radio-over-fiber (RoF) link with fixed incident optical power on photodetector (PD) are improved through carrier suppression method. Firstly, a precise analytical model is proposed to quantify the relationship between the improvement of link gain, noise figure (NF), spur-free dynamic range (SFDR) and the carrier suppression ratio x, in which, the modulation index m is fully considered for the first time to our knowledge. Then the optimum optical carrier-to-sideband ratio (CSR) for RoF link performances in both double-sideband and single-sideband modulation is obtained from the optimum x for the link performances. Finally the experiments with the carrier subtraction method realized by Stimulated Brillouin scattering (SBS) are carried out and the experimental results show good agreement with the simulation ones.