Fiber array (FA) is an array formed by using V-groove substrate to install a bundle of optical fibers or an optical fiber band on the substrate at specified intervals. Optical fiber array mainly includes substrate, pressing plate and optical fiber. The V-groove needs to use a special cutting process to achieve accurate optical fiber positioning. The exposed optical fiber part without optical fiber coating is placed in the V-groove, pressurized by the pressurizer component and fixed with adhesive, and the end face is optically ground to finally form an optical fiber array.