Performance Optimization of Broadband Communication System using Hybrid Parametric Amplifier

We describe a model of Raman-parametric hybrid amplifier and present its simulation results for flat gain amplification in Dense Wavelength Division multiplexed (DWDM) terabits capacity system. In the proposed configuration single pump FOPA is cascaded after Raman to form a hybrid with each implemented in separate length of fiber. This allows for maximum optimization of gain achieved using Raman as well as parametric processes separately. We also focus on the signal degradation due to non-linear crosstalk, in particular due to generated idlers within the operational bandwidth. It has been demonstrated that a maximum gain of 35.5 dB for 96 X 40 Gbps, 25 GHz system is attainable up to 300 km of transmission distance while maintaining OSNR > 18 dB using proposed hybrid. No gain compensation or gain optimization technique has been used. Flat gain in narrowband DWDM systems is achievable through proper optimization of pump wavelengths and their powers.