An optical fiber array, wherein a preset number of optical fibers (13) are fixed by a substrate (12) and a lid plate (11) each provided with V-grooves, and the distribution of fiber cores of the preset number of optical fibers (13) on a port cross-section of the optical fiber array matches a preset curve, such that light beams transmitted and output through the optical fiber array are not transmitted on the same plane, and correspond to required positions on the preset curve. Accordingly, the optical fiber array meets application requirements of a novel WSS system, and can be widely used in the novel WSS system and in other scenarios having special requirements of light beam positions.