A novel bare optical fiber cable is provided with a bare optical fiber and an outer sheath. An aramid reinforcing member is provided between the bare optical fiber and the outer sheath. According to the utility model, the structure layers of the optical fiber are simplified thereby reducing the diameter of the optical fiber. The wiring number of optical fibers can be increased in the limited space in a cabinet. The number of the used cabinets can be reduced and the investment cost is saved.