US Patent 11009668 Optical fiber ribbon and optical fiber cable

An optical fiber ribbon includes N pieces of optical fibers in a state of being disposed in parallel. At least some parts of the N pieces of optical fibers contact each other and are connected to each other by a resin; an outer diameter of the optical fiber is equal to or larger than 0.135 mm and equal to or smaller than 0.180 mm; a connection part connected by the resin or another resin and a non-connection part not connected by the resin or another resin are intermittently provided in a longitudinal direction between intermittently connected core wires of an optical fiber disposed at the Mth and an optical fiber disposed at the (M+1)th among the N pieces of optical fibers; the N is a multiple of 12; and the M is a multiple of 4.