Optical Phase-Interleaving Transmitter for 1.6-Tbit/s/λ Digital Coherent Systems Based on CMOS DACs

By using a bandwidth-extending transmitter with an $8 \times 4$ digital spectral weaver, CMOS DACs, and an optical phase-interleaving modulator, we achieved transmission at net bit rate beyond 1.6-Tbit/s/λ.