28-Gb/s/λ, TDM-PON with narrow filter compensation and enhanced FEC supporting 31.5 dB link loss budget after 20-km downstream transmission in the C-band

We experimentally demonstrate a 28-Gb/sA. TDM-PON based on bandwidth-limited NRZ modulation. By using narrow-filter-compensation and enhanced FEC with an optimal overhead, −26.5 dBm receiver sensitivity of is achieved in the C-band after 20-km downstream transmission.