We experimentally demonstrated and compared PAM-4, CAP-16QAM and DMT-16QAM modulations in a symmetrical 50-Gb/s/λ PON based on bandwidth-limited optics over the same fiber link at O-band. The performance of power budget and dispersion are discussed.

We experimentally demonstrated the first 56 Gbit/s/λ PAM-4 IM/DD system transmission over 120 km SSMF at O-band assisted by cascaded SOAs with the bandwidth-limited optics and simple DSP for high-speed DCI in metro-access networks.

We experimentally demonstrated single-lane 100-Gbaud PAM-8 and PS-PAM-16 signals IM/DD transmission over 1-km NZDSF using one single-DAC and single-Photodiode with joint nonlinear equalization techniques. 350-Gb/s PS-PAM-16 signal transmission can be achieved.

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