From the course: Networking Foundations: Networking Basics
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Fiber-optic cabling
From the course: Networking Foundations: Networking Basics
Fiber-optic cabling
- We saw that twisted pair copper cabling, it could be used to carry data at very high rates. However, it had a maximum distance limitation, typically of 100 meters, and that might be a little too limiting. For longer distance connections and the promise of absolutely zero electromagnetic interference, we might instead turn to fiber optics instead of copper cabling. Now specifically, since fiber optics use light to represent data, there is no concern about electromagnetic interference. And since copper cabling, it's not a superconductor, the longer that copper cable runs, the more impedance builds up and it starts to degrade the signal. But the question is what keeps light, laser light, inside of this fiber with that just being dispersed? Well, we can find the answer in a glass of water. Notice that we have a straw going into this glass of water, and as the straw enters the water, it appears to bend a little bit. The…
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