The structure of GYFTY63 (non-metallic reinforced member, loose sheath, stranding type, polyethylene sheathed communication outdoor optical cable) is that the single-mode or multi-mode optical fiber is sheathed in the inner filled waterproof composite loose tube made of high modulus plastic. The center of cable core is non-metallic reinforced core. For some optical cables with a certain number of cores, a layer of polyethylene (PE) is extruded from the non-metallic reinforced core wire. The loose tube (and filling rope) is wound around the central reinforcing core to form a compact circular cable core, and the water blocking compound is filled in the gap of the cable core. A layer of polyethylene sheath, non-metallic wire armor and a layer of polyethylene sheath are extruded out of the cable core.