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- How Does a Fibre Optic Cable Work?
Fibre optics, or optical fibres, are long, thin strands of carefully drawn glass about the diameter of a human hair. These strands are arranged in bundles called optical cables. We rely on them to transmit light signals over long distances. - How Does an Optical Fibre Transmit Light?A simple explanation of how light is transmitted via fibre optic cables.
- Fibre optics
Fibre optics works a third way. It sends information coded in a beam of light down a glass or plastic pipe. - What Is Fiber Optic Cable and How Does It Work?Fibre optic cable, also know as optical fibre cable, is a type of Ethernet cable which consists of one or more optic fibres that are used to transmit data.
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Fibre optic cable
Modern communication systems use fibre optic cables, which may have as many as a thousand individual fibres, because of a variety of benefits, such as greater data capacity, immunity to electro-magnetic interference, no risk of starting electrical fires, and improved security of communications.
Source: Encyclopædia Britannica. (n.d.). Fiber optics. Britannica School. Retrieved June 29, 2022, from https://school-eb-com-au.db.plcscotch.wa.edu.au/levels/high/article/fiber-optics/34170
If light hits the interface at any angle larger than θc with respect to the normal, it will not pass through to the second medium and all of it will be reflected back into the first medium, thus total internal reflection. θc is dependent on the refractive indices of the two mediums and can be calculated by Snell’s Law.
Further reading: Maestre, S. (2021, September 9). How does light travel through optical fibers? CircuitBread. https://www.circuitbread.com/ee-faq/how-does-light-travel-through-optical-fibers