A kind of novel fabrication system of array optical fiber gratings is designed, which can make multiwavelength array optical fiber gratings on 8-core ribbon optical fiber. The principle of this system is as follows: the ribbon optical fiber is clamped by the specially-designed fixture; tension is applied on ribbon optical fiber to control and change the resonant wavelength by electrically controlled displacement platform; optical fibers are exposed under ultraviolet (UV) laser one by one; Hamming apodization is employed at the same time. Array optical fiber Bragg gratings with 0.2 nm bandwidth, wavelength interval less than 0.5 nm, wavelength deviation less than ±0.05 nm and reflectivigy from 80% to 85% on ribbon optical fiber are successfully obtained by the above system. This kind of technoloty is easy to adjust the parameters of the optical fiber gratings and has more automation.