6×28GBaud 128-SP-QAM transmission over 41.7 km few-mode fiber with a 6×6 MIMO FDE

By exploiting 4D constellations, 6×28Gbaud 128-SP-QAM transmission over 41.7km few mode fiber with 6×6 multiple-input multiple-output (MIMO) frequency domain equalization (FDE) is demonstrated to perform better than 8QAM, whilst carrying 0.5bit/symbol more information.

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