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Fibre optic
Fibre optic, as in Figure 1.25, is a cable made up of glass through which the light is transmitted. Based on the light transmission, it is offered in two modes:
- Single mode utilizes only one light, and can reach a length from 40 km to 60 km
- Multimode utilizes multiple lights, and can reach a length from 2 km to 3 km.
Apart from its traditional usage in WANs, today fibre optic is used a lot for the implementation of fiber to the home (FTTH), and MAN networks:
![](https://epubservercos.yuewen.com/E1E23A/19470393901568406/epubprivate/OEBPS/Images/bcfac324-f5ae-451b-8504-da215d1baeab.jpg?sign=1739060906-8pIG0oZOUUqqo0iHQqG8Ah9qD84K3rQG-0-c026ac24b2597aa7efc3af66aa3823aa)
Figure 1.25. Fibre optic cable