Dispersion Compensation over C-band WDM Grid for 100Gb/s PAM4 System by Low-complexity Optoelectronic Feedforward Equalization (OE-FFE)

We experimentally investigate OE-FFE-enabled C-band 100Gb/s/λ PAM4 transmission over 50km with different carrier frequencies and linewidths. 3.8-THz range on ITU-T G.694.1 grid is supported with a single 1-tap optical delay line and ≤32-tap digital FFE.