ADSS (single sheath) is constructed with a 250μm optical fiber sheathed in a loose bushing (PBT) filled with a waterproof compound. The center of the cable core is a fiber reinforced composite (FRP) non-metallic center reinforcement core. The core is twisted into a compact and rounded core around the center reinforcement core, the gaps inside the core are filled with water barrier filler, a layer of water barrier tape is extruded outside the core, and aramid yarn is evenly wrapped around the core covered with water barrier tape, and then a polyethylene (PE) sheath is extruded to form the cable.