To meet the high speed,wide bandwidth,and large capacity requirements proposed by the next-generation 6G communication networks for optical communication networks,the optimal design of pumping parameters for Raman fiber amplifier (RFA) has become the focus of current research in optical communication systems.In this paper,using erbium-doped tellurium-based fiber as the transmission medium,a modified marine predator algorithm (MMPA) is proposed to optimize the design of the multi-pump RFA,which effectively achieves the flat optical amplification for each channel in the C+L band.Compared with the existing optimization algorithms for RFA,the MMPA has the characteristics of excellent performance and strong robustness,which can effectively solve the problems of nonlinearity and combinatorial optimization in the Raman coupled wave equation and ensure the high gain and low gain flatness of the RFA.The simulation results show that the average gain of the amplifier is 42.36 dB and the gain flatness is 0.67 dB in the gain spectral width range of 1 530—1 630 nm.