Phase-Coherent DSP over Space and Wavelength using Synchronized Optical Frequency Combs for Short-Reach Networks

We demonstrate shared DSP over space and wavelength for short-reach networks using seed-synchronized optical frequency combs. Using just 6 reference channels, carrier phase recovery of 3 (cores) $\times 158 \times 24.5$-GBaud PDM-64QAM C-band channels is demonstrated with $\gt 40-\mathrm{Tb} / \mathrm{s} /$ core over $14.3-\mathrm{km}$ MCF without dispersion or frequencyoffset compensation.