A fibre optic cable is constructed of glass strands. The strands are slightly thicker than human hair. Each strand has a core in the middle that permits light to pass through. These fibres are made up of ultra-thin strands of pure glass that can carry data by light. Since their invention more than 40 years ago, fibre optic cables have been revolutionary. Fibre optic connections have almost completely replaced copper wire-based networking today. Let’s have a look a 5 uses of fibre cables: