How does light carry data and information, i.e in fiber optic cables?
In: Physics
There is a light in one end which is switched on and off in a pattern and a light sensor in the other end to detect this pattern. This is just a modern version of the ancient signalling system of showing or hiding a torch from the recipient or the more recent signalling lamps used to communicate between ships. But modern technology means we can switch the light billions of times a second.
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