Complexity reduction, Deep reservoirs, High sensitivity, Impairment mitigation, Implementation complexity, Post-equalization, Reservoir Computing, Transmission impairment, Pulse amplitude modulation

We experimentally evaluate a deep Reservoir Computing (RC)-based post-equalization for 100 Gbaud PAM6 IM/DD transmissions. It achieves ∼1 dB higher sensitivity than DFE, and ∼50% implementation complexity reduction compared with the conventional RC configuration.