Aiming at the beam optimization problem of waveguide optical phased array,we propose a sidelobe optimization method with mixed weighting of amplitude and phase based on genetic algorithm.Taking onedimensional linear array as an example,we analyze the implementation method of mixed weighting.On the basis of the analysis,the MATLAB simulation in computer is carried out for the proposed genetic optimization algorithm.The simulation analysis shows that the optimized antenna pattern compresses the grating-lobe t...