Research on constant modulus algorithm of multicore multiplexing system

A space division multiplexing (SDM) system based on seven-core single-mode fiber with application of constant modulus algorithm (CMA) for signal equalization is proposed to achieve transmission of seven DP-QPSK signals. We also simulate and analyze the bit error rate (BER) performance with different optical signal-to-noise ratio (OSNR) and transmission distance of the proposed system. The simulation results show the effectiveness of CMA equalization on multi-core multiplexing (MCM) system, which is promising to realize long-distance multi-core SDM system transmission.