Comparison of the compensation effects of fiber nonlinear impairments with mid-span optical phase conjugation between PDM CO-OFDM system and PDM QPSK system

Xu Fei, Guo Meng-Qi, Wang Lei, Qiao Yao-Jun^†,, Tian Hui-Ping

Contour maps of Q factor versus OSNR and launch power into first fiber span of system (a) without OPC (b) with OPC when transmission distance = 800 km.