Performance optimization of SOA, EDFA, Raman and hybrid optical amplifiers in WDM network with reduced channel spacing of 50Â GHz

This paper investigated the performance of diverse optical amplifiers SOA, EDFA, Raman and hybrid amplifiers (SOA-EDFA, EDFA-EDFA, Raman-EDFA) at frequency spacing of 50 GHz in 8 × 10 Gbps WDM system. Examine the performance on the basis of output power, Q-factor, BER, and eye opening by varying distance from 20 to 200 km. It is found that SOA-EDFA provides maximum output power, acceptable Q-factor, maximum eye opening and lowest BER at a distance of 100 km. The impact of Raman fiber length on hybrid optical amplifier (Raman-EDFA) at 100 km transmission distance has been investigated and found that hybrid optical amplifier at 10 km Raman fiber length provides better output power and Q value.