Method and apparatus for producing coated optical fiber and an optical fiber.

摘要

A surface of an optical fiber is coated by a method for coating a surface of an optical fiber with carbon comprising steps of introducing an optical fiber (10) in a reaction chamber (45, 56) containing a coating raw material comprising carbon, hydrogen and halogen atoms and depositing on the surface of the optical fiber a carbon layer formed from the raw material by chemical vapor deposition, whereby the coated optical fiber has improved intitial tensile strength and absorbs less hydrogen.