Bragg gratings have been produced in germanosilicate optical fibers by exposing the fiber, through a polymer coating, to an interference pattern in the ultraviolet wavelength region. Two different coatings, Teflon AF@ 1600 and Kynar@ 7201, were applied on the fiber by dip coating and their optical properties in the 200-300 nm range were investigated. During the grating fabrication process, Teflon AF showed no sign of degradation at the fluencies required for efficient grating manufacturing. When Kynar 7201 was used, the coating darkened and decomposed