I’m not sure if their is a functional proof of concept even in existence.
“The challenge is to find a single material that can effectively use and control light to carry information around a computer,” noted Richard Curry, the current study’s lead investigator and a physicist the the University of Surrey, in a statement. “Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data.”
They go on to describe a breakthrough, but it all seems very experimental at this point.
Seems like they are still having material science issues, which leads me to believe that 10 years is a reasonable lower bound, not an optimistic estimate for full production use. I could imagine you spending years just getting the supply chains together for such a new thing, testing, etc. Hardware is very hard. Especially tiny hardware with new materials.
Of course, the potential is massive. Here’s hoping they get it together sooner than later.