Demonstration of 50Gb/sλ Symmetric PAM4 TDM-PON with 10G-class Optics and DSP-free ONUs in the O-band

We demonstrate a 50Gb/s/λ PAM4 TDM-PON based on 10G-class DMLs and PDs in O-band with downlink pre-compensation and uplink post-equalization. Results show that, without any DSP in the ONU, 29dB optical power budget is achieved.