Raman Amplification Optimization in Short-Reach High Data Rate Coherent Transmission Systems

Raman Amplification Optimization in Short-Reach High Data Rate Coherent Transmission Systems

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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 with backward pumping delivered the best viqua-f4 transmission performance among all the schemes, notably better than the expected second-order Raman scheme, which gave a flatter signal power variation along the fibre.

Using the first-order backward Raman pumping scheme demonstrated a better balance between the ASE noise and fibre nonlinearity and gave an iphone 13 pro max price florida optimal transmission performance over a relatively short distance of 75 km SMF.