I thought you were kidding.... and then I saw a Wikipedia page for it.[1]
It's not going to be much power, that's for sure.
You might be able to get a commercial system that delivers 1 watt at 24 volts. [2]
Given the optical power required, and the sensitivity of the human retina, I'd say this is a bad idea in all but the most demanding circumstances. If you've got to send power with extreme electrical isolation(i.e. lightning strike proof), consider something like compressed nitrogen powering a very small turbine, or a rotating fiberglass shaft between motor and generator.
[1] https://en.wikipedia.org/wiki/Power-over-fiber
[2] https://www.fiberopticlink.com/product/fiber-optic-isolation...
