Question

dash fibre is want to make a fibre lines​

Answer 1

Answer:

Optical fiber.

Explanation:

Bundles of single-mode optical fibers are used in long-distance telephone lines and undersea cables. Multi-mode optical fibers, which have a core diameter of 50 micrometers and a cladding diameter of 125 micrometers, can carry hundreds of separate light wave signals over shorter distances.