Abstract
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.
© 2011 Chinese Optics Letters
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