Electrical and Computer Engineering

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Electrical and computer engineering (ECE) community, for professionals and learners. Discuss ECE related topics here, for instance digital design, signal processing, circuit analysis, electromagnetics, microelectronics, power electronics, RF electronics, etc.

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dragontamer

There exist power over fiber components that can provide 3v 180mA from 1.5W of 800nm infrared light coming through a standard multimode optical fiber. (chaos.social)

submitted 1 year ago* (last edited 1 year ago) by dragontamer to c/ece

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This Mastodon post hit #1 on Hacker News today, I think people around here would be interested.

Then you look at the $350 price point and walk away.

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[–] partial_accumen 8 points 1 year ago* (last edited 1 year ago) (1 children)

I just googled "low power camera module" and found this consuming 14ma. That would leave 166ma available for encoding/signaling circuitry.

So you could dangle a camera off of a single strand of fiber with zero EM interference in transmission for miles. Sounds like a good application for deep sea use.

[–] dragontamer 1 points 1 year ago (1 children)

Maybe not miles. Even in Fiber Optics, there is a degree of attenuation / power loss as the cable absorbs some light and emits it as heat. But you might get a good enough distance before enough energy dissipates.

[–] slazer2au 1 points 1 year ago

Multimode cable tho, doesn't go very far