MGDM Transmission of 2×28-Gb/s OOK signals Operating in 0.8-μm Region over 2.2 km of SSMF

We demonstrate the transmission of 2×28-Gb/s MGDM OOK signals operating at 852.6 nm over 2.2-km long SSMF. Only two photodetectors are used for the detection of these two MGDM signals with the help of a multiple-input single-output equalizer.