Experimental Demonstration of Novel ETC Algorithm for 112 Gbit/s PAM-4 Signals Transmission Over 40km without Optical Amplifier

We proposed an error-table (ET) based pre-correction (ETC) algorithm. Combined with DDFTN, A new record receiver sensitivity of −16.6 dBm was achieved at a BER of 3.8E-3 for 112 Gbit/s PAM4 signals transmissions over 40 km.