this post was submitted on 04 Dec 2024
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Explain Like I'm Five

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ELI5 How data can be transferred by a laser or beam? (lemmy.world)
submitted 2 weeks ago by Patnou@lemmy.world to c/explainlikeimfive@lemmy.world
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Remember reading an article a while back where they said they did it. Can't find it but never really explained how it is even possible or how or why someone said look light lets put some data in itl

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[–] CheddahBiscuit@lemmy.world 5 points 2 weeks ago

As the other comments stated, it can be as simple as turning the light on and off and we already do this with fiber optic network connections. The light particles themselves aren't carrying the data, just the pattern of on and off.

It is also possible to send multiple streams of light using color filters. It's called Wavelength Division Multiplexing.