GYDXTW [metal reinforcement member, steel-polyethylene bonded sheath central bundle type fully filled outdoor optical cable for communication with parallel steel wire entrained] The structure of the optical cable is to sheath the multi-mode or single-mode optical fiber ribbon in a high-modulus plastic. Made into a loose tube filled with waterproofing compound and placed in the center of the cable. Water blocking tape and steel tape are longitudinally wrapped outside the tube, and two parallel steel wires are embedded in the sheath to form a cable as a reinforcing member.