1 Tbit/s/ $\lambda$ Transmission Over a 130 km Link Consisting of Graded-Index $50\ \mu\mathrm{m}$ Core Multi-Mode Fiber and 6LP Few-Mode Fiber

We demonstrate 1 Tbit/s/ λ single-span transmission over a heterogeneous link consisting of graded-index 50 μm core multi-mode fiber and 6LP few-mode fiber using a Kramers-Kronig receiver structure. Furthermore, the link budget increase by transmitting only three modes while employing more than three receivers is investigated.