SIMULATIVE ANALYSIS OF OSNR AND RECEIVED ELECTRIC RF POWER OF A ROF SYSTEM HAVING VARIABLE FIBER LENGTH, USING DIFFERENT MODULATION TECHNIQUES AND OPTICAL AMPLIFIERS

摘要

In this paper, we analyzed OSNR and received electric RF power of a RoF communication system having variable fiber length, using direct and external modulation techniques and different optical amplifiers. In this work, we have compared and measured the OSNR and received optical power of the RoF system for different modulation techniques, i.e. direct and external modulation. Further, we also compared the received electric RF power for variable fiber lengths for direct and external modulation using different optical amplifiers, i.e. EDFA and SOA. We observe an increase of 11 dB (approx.) in the received RF power for External modulation compared to direct modulation with EDFA.