By adding roughly four wheel drive semiconductor oxide (GeO2), for instance, they will produce a glass that has abundant less attenuation, and far 'flatter' attenuation across varied frequencies of sunshine, than silicon oxide by itself. though fibers may be created out of either plastic or glass, the fibers utilized in long-distance telecommunications applications ar invariably glass, due to the lower optical absorption of glass. the sunshine transmitted through the fiber is confined as a result of total internal reflection among the fiber optic connectivity.