Comment by BenoitP

> efficiently converts optical power to electrical power

Damn, I thought it was just a copper pair going along the fibers. I hope they provide some thick safety glasses with that.

I don't know if it'd come out as laser light, but 600 mW puts it into class 4 (eyes are damaged at a few 100m distance):

https://www.lasersafetyfacts.com/resources/FAA---visible-las...