Array of tubes for optical cables

An assembly comprising:

• a tube;
• and
• at least one optical cable, said optical cable configured to be placed inside said tube by sliding in the said tube,
• wherein the tube has an inner diameter D and in that the optical cable has an outer diameter d, the ratio d/D ranging from 0.10 to 0.80,
• wherein the tube has a Young's modulus ranging from 450 MPa to 700 MPa,
• wherein the tube comprises a main layer comprising at least one first polymer material,
• wherein the tube comprises an inner layer comprising at least one second polymer material different from the first polymer material, said inner layer being surrounded by the main layer, and
• wherein the first polymer material comprises at least one polymer of polyimide chosen from among the polyetherimides, the polyamideimides, the copolymers of polyetherimide-siloxanes, and one of the mixtures thereof.