Sunday, August 22, 2010

How Does Fibre Optic Technology Work?

In recent times fibre optic technology has become increasingly evident in all types of technology. Gone are the conventional methods of sending data through copper wires, as well as slow data transfer speed. In this article I will explain the technology behind optic technology and what is involved.

How are fibre optics constructed?

Fibre optic cables are made up of minuscule strands of glass and plastic. In a lot of cases these filaments are purely glass such as those used to transfer cable broadband. The reason for this is that glass reduces signal loss over long distances while plastic is commonly used for short distances.

These filaments are interwoven on top of a core known as cladding. Cladding is what keeps the signal within the centre core, as the cladding is reflective light is directed to stream through the centre core while also preventing loss of signal which could be lost.

Types of optic

Multimode fibres

Multimode fibre optics are commonly used for short distance transfer where high power output is needed. These type of fibres come with a larger core to deal with the extra power output.

Singlemode Fibres

These fibres allow only one single at a time and are commonly used for long distances that multimode is not suitable for.

How is data transmitted via fibre optics using light

Many people assume the light transmitted through optics is one single strong beam of light. In fact the light passed through a fibre optic cable is regulated in short bursts of various lengths and timing. This could be compared to technology and data transmission such as morse code for example.

Optical connections provide many benefits over the standard copper wire transfer including faster and higher data transfer as well as being more reliable than copper transmission. You would think a technology like this would be expensive, but in fact optics is cheaper and more cost efficient than copper transfer methods.

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