Low-temperature-resistant and pressure-resistant optical cable and manufacturing process thereof

The invention discloses a low-temperature-resistant and pressure-resistant optical cable and a manufacturing process thereof, and relates to the technical field of optical cables, and the low-temperature-resistant and pressure-resistant optical cable comprises a cable core, a support body, and a protection layer, a water-resisting layer, an armor layer and an outer sheath which are sequentially coated outside the cable core and the support body; a tearing rope is arranged in the protective layer; the support body is located in an outer gap between the adjacent cable cores, the cross section of the support body is fan-shaped, the radius of the support body is tangent to the adjacent cable core, and the arc of the support body is tangent to the protective layer; at least one light-guide fiber is arranged in the cable core, and a sheath layer is coated outside the cable core; the optical cable provided by the invention has excellent cold resistance, compression resistance and flame retardance, can normally trans