Joints in Optical Cables

In many instances, optical cables are needed to be jointed with one another.  Jointing in optical cables is different from jointing in electrical wires and cables.  The connection should be made such that there is minimum loss of the light energy. 
There are different methods of jointing optical cables
Fusion Jointing
In the method, the surface of the two optical fibres to be connected are heated and fused together.  This ensures that the light is conveyed from one fibre to another efficiently
Mechanical jointing
In this method, the surfaces of the ends are held firmly to make proper contact.  An gel or epoxy is used to match the different reflective indices of the materials.  The fibres are held together by mechanical splices. 

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