We describe the use of optical phase conjugation (OPC) to suppress intrachannel nonlinearities that limit pseudolinear transmission. We show that OPC combined with appropriate dispersion mapping is effective in suppressing intrachannel nonlinearities, even in the absence of signal-power evolution symmetry that is generally required by OPC to compensate fiber nonlinearity. An increase in signal power by 5.5 dB is observed when a single OPC is used for 40-Gbit/s pseudolinear transmission over 32×100km of passive-fiber spans.
© 2004 Optical Society of America
Aref Chowdhury and René-Jean Essiambre, "Optical phase conjugation and pseudolinear transmission," Opt. Lett. 29, 1105-1107 (2004)