80 × 200 Gb/s 16-QAM unrepeatered transmission over 321 km with third order Raman amplification
15 June 2015
We show 80 × 200 Gb/s transmission over 321 km of low-loss fiber with third order Raman amplification without ROPA. We investigate narrow channel spacing down to 37.5 GHz, targeting a capacity of 21 Tb/s.