A coated optical fiber, preferably a GGP optical fiber includes an optical fiber
core, and a silica cladding over the optical fiber core, to provide a silica clad
core. A permanent polymeric coating forms on the silica cladding during ultraviolet
radiation of a photocurable composition containing a non-hydrolyzable photoinitiator.
The coated optical fiber has a diameter from about 120 microns to about 160 microns
and a relative frequency distribution of at least about 85% for dynamic fatigue
measurements between about 49.2103 kg/cm2 (700 kpsi)
and about 63.3103 kg/cm2 (900 kpsi).