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We demonstrate hybrid 40-Gb/s and 100-Gb/s PDM-QPSK DWDM transmission using real-time DSP in 580-km DSF-installed field testbed. The nonlinear crosstalk penalty due to the hybrid transmission of less than 0.5 dB is confirmed.
A novel automatic dispersion compensation system for WDM systems that is based on mode-splitting of tone-modulated CS-RZ signals is proposed and its compensation capability is demonstrated by 100 GHz spaced 8×43 Gbit/s WDM transmission.
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