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We propose a novel band-divided receiver structure that alleviates the required sampling rate of an A/D converter without a guard band. We demonstrated that 12 Gb/s OFDM signal can be demodulated using 1.5 GHz ADC.
We demonstrate the record total capacity of 69.1 Tb/s with a spectral efficiency of 6.4 b/s/Hz by employing 21.4-Gbaud 16-QAM modulation, blind digital coherent detection, and 10.8-THz ultra-wideband amplification in the C- and extended L-bands.
It is experimentally shown that employing multi-staged reverse self-phase-modulation in a coherent receiver compensates for waveform distortion due to self-phase-modulation including the inter-polarisation nonlinearity of polarisation-division multiplexing and inter-subcarrier nonlinearity of orthogonal frequency division multiplexing. This scheme extends the transmission distance 1.25-fold under...
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