Experimental Demonstration of Optical Colorless Direct-Detection OFDM Signals with 16-and 64-QAM Formats beyond 15 Gb/s
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Abstract
Both highly spectral-efficient direct-detection 15-Gb/s 64-QAM and 20-Gb/s 16-QAM OFDM signals are demonstrated. Negligible penalty is observed following 25-km SMF transmission.