PRODUCTION OF TAPE-LIKE FIBER CORE

摘要

PURPOSE:To thin a tape core by coating an external surface of adjacently arrayed optical fibers with ultraviolet ray hardening resin to form a flat tape- like shape and irradiating the uniform quantity of ultraviolet rays simultaneously to both the sides to harden the resin. CONSTITUTION:Plural optical fibers or optical fiber strands 3 covered with protection coats are adjacently arrayed and their outer periphery is coated with the ultraviolet ray hardening resin to form the flate tape-like shape and the uniform quantity of ultraviolet rays are simultaneously irradiated to both the sides to harden the resin. Since the resin is applied to the cores uniformly by containing felt e.g. in the resin, the optical fibers can be prevented from the generation of a warp and transmission loss. Since ultraviolet rays are uniformly irradiated to the resin-coated tape-like unit from the right and left directions and upper and lower directions of the flat surface at the initial stage of hardening. Consequently, the tape-like optical fiber constituted of a thin layer can be obtained.