Nested optical fiber ribbon optical cable

The invention belongs to the technical field of optical cables, and discloses a nested optical fiber ribbon optical cable, which is provided with a cable core and an outer sheath wrapping the cable core, and is characterized in that the cable core comprises a reinforcing piece, a first sleeve, a first optical fiber ribbon, a second sleeve and a second optical fiber ribbon; the first sleeve is composed of a first sleeve wall body in the shape of an annular cylinder, a bent containing cavity is formed in the first sleeve wall body, a containing channel is formed in the first sleeve wall body, and a first optical fiber ribbon is arranged in the containing cavity; the second sleeve is composed of a cylindrical second sleeve wall body and an extension part connected with the second sleeve wall body into a whole, the first sleeve wall body is internally provided with a bent accommodating cavity, the extension part is internally provided with an extension cavity, the extension cavity is communicated with the accommo