1.2-Tb/s MIMO-less transmission over 1 km of four-core elliptical-core few-mode fiber with 125-µm diameter cladding

We demonstrate 1.2-Tb/s (300-Gb/s per λ) WDM+SDM transmission over 1 km of four-core elliptical-core few-mode fiber with 125-µm diameter cladding, using only 4-PAM and OOK with direct detection and no MIMO.