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Optical Fibres
The way optical fibres work
Advantages of Optical fibres
Disadvantages of Optical fibres
Uses of optical fibres
Types of optical fibres

Optical fibres are made up of three components:


Core - Thin glass centre of the fibre where the light travels


Cladding - Outer optical material surrounding the core that reflects the light back into the core.


Buffer coating - Plastic coating that protects the fibre from damage and moisture.


This is shown in the diagram below. 


Thousands of optical fibre strands are arranged in bundles into optical cables.
The bundles are protected by the optical cable's outer covering, called a jacket.

By Mathew Barrie - Cusack 5