A new method using optical fiber laser phased array technology to build all-optical networking is proposed. The beam scanning range is narrowed, much energy of main lobe is distributed and the distance of communication is shortened for the existing of far-field grating lobes. The purpose of eliminating the grating lobe can be achieved through changing the space between elements. And the corresponding simulation works are completed. The feasibility of performing communication using phased array technology is verified by experiments.