Optical fiber ribbon and production method for producing same

Abstract

To provide an optical fiber ribbon having an identification region for identification, in which optical transmission loss is less likely to occur even when the optical fiber ribbon is accommodated in a cable at a high density. An optical fiber ribbon for achieving the above objective is an optical fiber ribbon including a plurality of single-core coated optical fibers disposed in parallel and a plurality of coupling portions disposed between adjacent ones of the single-core coated optical fibers. The optical fiber ribbon includes an identification region in which a plurality of dots are disposed on the single-core coated optical fibers and/or the coupling portions, and a ratio of a total area of the dots disposed on each of the single-core coated optical fibers to an area of the single-core coated optical fiber is less than or equal to 20% when the identification region is seen in plan view.