155×100Gbit/s coherent PDM-QPSK transmission over 7,200km

We report the transmission of 155 channels with 100Gbit/s PDM-QPSK modulation over 7200km of pure silica core fibre, exploiting hybrid Raman-EDFA amplification and digital coherent detection. A record 112Petabit/s·km capacity×distance product is demonstrated.