First 260-GBd Single-Carrier Coherent Transmission over 100 km Distance Based on Novel Arbitrary Waveform Generator and Thin-Film Lithium Niobate I/Q Modulator

We demonstrate a record 260-GBd DP-QPSK coherent transmission over 100-km SSMF. This result is achieved using a new 260-GSa/s SiGe arbitrary waveform generator with >75-GHz analogue bandwidth and a thin-film lithium niobate I/Q modulator with 110-GHz 3-dB bandwidth.