The primary element is the optical fiber itself, which is a thin, flexible strand of glass or plastic that guides light along its length through the principle of total internal reflection. A TOSLINK optical fiber cable with a clear jacket. These cables are used mainly for digital audio connections between devices. This technology leverages the principle of total internal reflection, which allows light to propagate within the fiber, maintaining its strength over long. Fiber optic cables are made up of a core, cladding, and protective layers, with materials chosen based on the application requirements. Manufacturers produce these fibers through a. This guide breaks down the five core components of a fiber optic cable — from the specification package to the actual installation considerations. You will also learn how different aspects of the product can affect budget and design.