<![CDATA[Thinking how much I hate wiring and wondering about optical fiber powered sensors.]]>Thinking how much I hate wiring and wondering about optical fiber powered sensors. That is, send enough laser power down fiber that small photo electric cell harvests, which in turn powers small sensors, their values multiplexed back down the fiber.

Here's a paper from 2024 along those lines.
https://ieeexplore.ieee.org/document/10555161

Not sure if I understand FBG's fully, are they a way to reinject signals and/or an optical modulating technique? Like could you use only optical components to sense temperature: https://en.wikipedia.org/wiki/Distributed_temperature_sensing

Link Preview ImageLink Preview Image
]]>https://board.circlewithadot.net/topic/15fc9b00-2906-43f9-a7b9-f9d50cb2f719/thinking-how-much-i-hate-wiring-and-wondering-about-optical-fiber-powered-sensors.RSS for NodeFri, 15 May 2026 02:55:13 GMTTue, 21 Apr 2026 14:45:27 GMT60<![CDATA[Reply to Thinking how much I hate wiring and wondering about optical fiber powered sensors. on Tue, 21 Apr 2026 14:57:18 GMT]]>@jerzone

Looks like neat stuff!

I think FBGs are the temperature sensing component. Sounds like they also can sense strain which might be useful for sensing weight, pressure, or water level.

I'm also aware of optical sensors for current and voltage but I don't know the principles behind those offhand.

https://en.wikipedia.org/wiki/Fiber_Bragg_grating

]]>https://board.circlewithadot.net/post/https://vmst.io/users/intrepidhero/statuses/116443279429901908https://board.circlewithadot.net/post/https://vmst.io/users/intrepidhero/statuses/116443279429901908Tue, 21 Apr 2026 14:57:18 GMT