Raman Amplification Optimization in Short-Reach High Data Rate Coherent Transmission Systems
We compared the transmission performances of 600 Gbit/s PM-64QAM WDM signals over 75.6 km of single-mode fibre (SMF) using EDFA, discrete Raman, hybrid Raman/EDFA, and first-order or second-order (dual-order) distributed Raman amplifiers.Our numerical simulations and experimental results showed that the simple first-order distributed Raman scheme w