Optimized optical phase conjugation configuration for fiber nonlinearity compensation in CO-OFDM systems
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摘要:
The optimized optical phase conjugation (OPC) configuration is proposed for the 40-Gb/s CO-OFDM system.The proposed configuration for nonlinear cancellation is systematically depicted in transmission links with lumped amplification.Numerical simulations are performed to demonstrate effectiveness.Simulation results show that mid-span spectral inversion (MSSI) can partially compensate for nonlinear distortions.Moreover, its optimized configuration can further improve system performances and increase nonlinear compensation effectiveness.Compared with MSSI, the maximal Q factor, nonlinear threshold, and transmission distance of optimized OPC configuration increase by over 1.6 dB, 2 dB, and 2 times, respectively.