Device and method for improving spatial light-fiber array coupling efficiency

The invention discloses a device and method for improving spatial light-fiber array coupling efficiency. After a signal light beam is transmitted through long-distance turbulence atmosphere, a distorted wavefront is generated; the distorted wavefront is coupled by a spatial light-fiber array coupling device shown in a Fig.2 described in the descriptions of the invention, so that the space transmitted light beam is converted into a fiber transmitted light beam; at the tail ends of arrayed fibers, fiber array fusion tapering or photoelectric conversion can be carried out; a signal detection and reduction process is carried out; a micro-motion piezoelectric ceramic array is intelligently optimized and driven, so that the center of each fiber coupling end surface in each array unit is located at the center of the focal point of a corresponding lens, and the overlapping of each fiber with the optical axis of the corresponding lens is kept; and therefore, the spatial light-fiber array coupling efficiency is further improved.