Fig. 1. Schematic of SIC equalization principle

Fig. 2. Schematic of SIC equalization principle for mode demultiplexing

Fig. 3. Schematic of 6×6 mode-division multiplexing system

Fig. 4. Signal constellations of LP01x. (a) MDL at 5 dB; (b) MDL at 10 dB; (c) MDL at 5 dB with MMSE demultiplexing; (d) MDL at 10 dB with MMSE demultiplexing; (e) MDL at 5 dB with SIC-MMSE demultiplexing; (f) MDL at 10 dB with SIC-MMSE demultiplexing

Fig. 5. Bit error rate (BER) versus OSNR under different MDL by different demultiplexing methods

Fig. 6. BER versus coupling strength by different demultiplexing methods

Fig. 7. Computational complexity of FLOPs for different demultiplexing methods