Optical fibers possessing a primary coating with a higher degree of cure and methods of making

An optical fiber including: a fiber including at least a core; a primary coating substantially encapsulating the fiber, the primary coating being the cured product of a first polymerizable composition including a first photoinitiator which absorbs light within a range of the UV spectrum; and a secondary coating substantially encapsulating the primary coating on the fiber, the secondary coating being the cured product of a second polymerizable composition including a second photoinitiator which also absorbs light within the range of the UV spectrum, wherein an average integrated intensity for the second photoinitiator is 95% or less of the average integrated intensity for the primary photoinitiator over at least a portion of the range of the UV spectrum. Also disclosed are fiber optic ribbons including the optical fibers, methods of making the optical fibers, and methods of increasing the degree of cure for a primary coating on an optical fiber.