Core, Cladding , Buffer

Core, Cladding, Buffer

      

       

      A fiber-optic cable is made up of hundreds of incredibly thin strands of glass of plastic known as optical fibers. Each one is less than a tenth as thick as a human hair and can carry 10 million telephone calls. This technology is light based; the other thing that keeps light in the pipe is the structure of the cable, which is made up of two separate parts. The main part of the cable in the middle is called the CORE and that’s the bit the light travels through. Wrapped around the outside of the core is another layer of glass called the CLADDING. The cladding’s job is to keep the light signals inside the core. It can do this because it is made of a different type of glass to the core. More technically, the cladding has a higher refractive index than the core. Light travels slower in the cladding than in the core. Any light that tries to leak into the cladding tends to bend back inside the core. And the last layer of the cable is the buffer. This is the protection layer of the cable so it won’t get damage