The structure of GYTS (metal reinforced component, loose sheath layer twisted filling type, outdoor optical cable for steel polyethylene bonded sheath communication) optical cable is to sleeve single-mode or multi-mode optical fiber into the inner filled waterproof compound loose tube made of high modulus plastic. The center of the cable core is a metal reinforced core. For some cable cores, the metal reinforced core is also extruded with a layer of polyethylene (PE). The loose tube (and the filling rope) is twisted around the central reinforced core to form a compact and circular cable core, and the gap in the cable core is filled with water blocking compound. Extruded polyethylene sheath after longitudinal wrapping of plastic coated steel strip.