Study of the all-optical high-speed OFDM transmission system based on MAMSK modulation

In this paper, an all-optical orthogonal frequency division multiplexing (OOFDM) system based on the multi-amplitude minimum shift keying (MAMSK) modulation is proposed. A scheme to realize MAMSK is designed, and the influence of modulation index on the performance of MAMSK is discussed. Numerical simulations and analysis are performed, and the comparison between the MAMSK-OOFDM and the MAMSK-WDM system is made. The lowest value of the BER of MAMSK-OOFDM is 3.98 × 10−6, while that of MAMSK-WDM is 7.94 × 10−4 when the input power is 0.8 mw and dispersion is completely compensated. The results show that, for its multi-level amplitude and excellent spectrum efficiency, MAMSK-OOFDM can greatly mitigate the effects caused by dispersive and nonlinear phenomena, and it can also effectively improve the capacity of the system.

► An all-optical OFDM system based on 2-MAMSK is presented.
► A scheme to realize the MAMSK is designed.
► The influence of modulation index on the MAMSK is simulated numerically.
► The comparison between MAMSK-OOFDM and MAMSK-WDM is simulated and analyzed.
► The MAMSK-OOFDM system can greatly improve transmission performance and capability.