2.1.2.4. Fiber optic
An optical fiber is a flexible, transparent fiber made of very
pure glass silica not much bigger than a human hair that acts as a waveguide,
or light pipe used to transmit light between the two ends of the fiber.
Figure 2: fiber optic
The optical fiber is used more depend on its exceptional
properties and particularly a very high bandwidth and a very weak attenuation
,it offers a flow of information definitely higher than that of coppers and
supports a network broadband by which can as well forward television,
telephony, the videoconference or the data information.[5]
The influence of optical fiber is the subject of our study,
particularly in a network multiservice and a deepening is reserved to him in
this chapter.
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