Optical Fibre Communications - Essay Example

You may use all of the allocated section numbers, or fewer. However, you are forbidden from entering any extra section numbers. You are permitted to have up to four figures in this report. They can only appear in the Design or Results sections. Each figure has been allocated a number. You must provide a title(s) and page number(s) in the space below. When you draw a figure, it must have below it the figure number and a title that matches the one entered here (see below). Photographic images are not permitted and will be ignored for marking purposes.

You are permitted to have up to three tables in this report. They can only appear in the Design or Results sections. Each table has been allocated a number. You must provide a title(s) and page number(s) in the space below. When you draw a table, it must have below it the table number and a title that matches the one entered here. For example: Write your Introduction in the space provided. Use only this space – any inserted sheets will be ignored for marking purposes. The Introduction should cover relevant background information that will help in the understanding of the report, but which cannot be included in the other sections.

The construction of optical fibres consists of three parts, a core made from a transparent material with a refractive index n1. A layer of cladding made from a transparent material that has a lower refractive index n2 then the core surrounds the core. The cladding adds support to the core structure and reduces the radiation loss to the atmosphere. The final part of the fibre consists of a polymer coating that protects the glass layers from damage. The combination of these three components leads to a dielectric wave-guide that allows light to pass through the It is important to understand how light rays propagate through an optical fibre.

With the construction of the fibre having two transparent inner sections with the core having a higher refractive index. When