Facts about  Fiber Optic Cables

1.Outer insulating jacket is made  of Teflon or PVC.

2.Kevler fiber  helps  to strengthen  the cable and prevent breakage.

3.A plastic coating  is used  to cushion the fiber canter.

4. Center ( core) is made of glass  or plastic fiber.

Optical fiber  consists  of thin  glass  fibers than can  information at frequencies in the visible light  spectrums and beyond. The  typical  optical fibe consists of a very narrow  strand  of glass  called  the core around the core there  is a concentric layer of glass called  the  cladding. Coating the  cladding is a protective coasting consisting of plastic it is called  jacket.

     figure Single fibre and a sheath of three fibres

Advantages and Disadvantages of optical fibers

Advantages: Fiber optic  cable  has  several ad van ages over metallic cable( twisted pair or coaxial).