Fiber grating string preparation system

The utility model discloses a fiber grating string preparation system. The device comprises an excimer laser, a light beam adjusting assembly, a mask plate and an adjusting device, the excimer laser generates an inscribing light source; the light beam adjusting assembly is aligned with a light source generated by the molecular laser for filtering and shaping; the adjusted laser irradiates the maskplate to form diffraction stripes, an optical fiber is arranged on the adjusting device, the laser forms a grating in the optical fiber after being diffracted by the mask plate, and the adjusting device can adjust the distance between the optical fiber and the mask plate to form a grating string on the optical fiber; according to the utility model, the position does not need to be adjusted afterthe optical fiber is dismounted, and the distance between the optical fiber and the mask plate is adjusted directly through the adjusting device, so that laser forms a grating string on the optical fiber. 本实用新型公开了一种光纤光栅串制备系统，包