8λ×462Gb/s Transmission with Symmetric Carrier-Assisted Differential Detection Using Delay-Unknown Field Recovery

We implement symmetric carrier-assisted differential detection receiver as an LO-free alternative to single-polarization coherent receiver. Using 2×1 MIMO equalizer-based optical field recovery and SSBI cancellation, 3.7Tb/s(=8λ×462Gb/s) PS-64-QAM signals are transmitted over 25-km SSMF for data-center-interconnects.