What is the construction sequence of a fiber optic line?

The correct answer reflects the proper construction sequence of a fiber optic line, which consists of three main components: the core, the cladding, and the insulation.

In this context, the core is the central part of the fiber optic line, where the light signals travel. It is typically made from glass or plastic and has a higher refractive index than the cladding. Surrounding the core is the cladding, which is a layer of material that reflects light back into the core, ensuring that the light signals remain contained and minimizing loss. The cladding has a lower refractive index than the core, facilitating total internal reflection of the light traveling through the core.

Finally, the insulation, also known as the buffer or protective coating, surrounds the cladding and provides mechanical protection, shielding the delicate fibers from external damage and environmental factors. The correct order of construction starts with the core, followed by the cladding that envelops it, and finally the insulation that protects the entire assembly.

Understanding this sequence is crucial for recognizing how fiber optics function, which forms the backbone of modern high-speed communication networks.