The invention discloses a
submarine optical cable with an optical unit longitudinally-wrapped
copper strip structure and a preparation method thereof, and the
submarine optical cable comprises an optical unit, a
copper strip, a sheath, an outer armored steel wire, a first PP
rope, an
asphalt spacing layer and a second PP
rope, the surface of the optical unit is longitudinally wrapped by the copperstrip, and the sheath is arranged on the outer surface of the
copper strip;the inner surface of the copper strip is partially or completely covered with an
adhesive film. glue is arranged between theouter surface of the optical unit and the inner surface of the copper strip or the glue film for bonding, and the edges of the copper strip are partially overlapped for
lap joint and fixation. By means of the mode, the sea optical cable of the optical unit longitudinally-wrapped copper strip structure and the preparation method thereof optimize a traditional
feed type submarine optical cable structure, reduce self-weight and material cost without
argon arc welding, achieve longitudinally-wrapped fixing and sealing of the copper strip on the surface of the optical unit through matching of theadhesive film and glue, ensures the strength and the sealing performance of the
lap joint position, and reduces the copper strip repairing difficulty and the construction risk.