Two-core water-blocking shielding optical fiber composite cable

The utility model discloses a two-core water-blocking shielding optical fiber composite cable. The composite cable comprises two power transmission units and two optical units; each power transmission unit is composed of a circular conductor and an insulating layer coated on the external surface of the circular conductor; each optical unit is composed of two optical fibers and an extruded first polyethylene layer, and a filling cable compound is arranged between the first polyethylene layer and the optical fibers; a water-blocking tape is wrapped on the external surfaces of the power transmission units and the optical units; a water-blocking shielding layer composed of copper strips with a thickness of 0.2 to 0.4 mm is coated on the external surface of the water-blocking tape; a second polyethylene layer is extruded on the external surface of the water-blocking shielding layer; and a cabling lay ratio of the power transmission units and the optical units is 40 to 45 times. The two-core water-blocking shielding optical fiber composite cable provided by the utility model overcomes the defect of waterproof performance of a conventional optical fiber composite cable, has substantially improved waterproofness and enables loss of electric energy and signals in the process of transmission to be reduced.