That story was the first ever measurement of light speed in a new fiber technology, so it was obviously still in the lab at that stage. It is still really an e

That story was the first ever measurement of light speed in a new fiber technology, so it was obviously still in the lab at that stage. It is still really an emerging research field, here's something more up to date - https://www.laserfocusworld.com/articles/print/volume-54/issue-05/newsbreaks/hollow-core-fibers-deliver-ultraviolet-light-without-solar-degradation.html https://www.laserfocusworld.com/articles/print/volume-54/iss... But you can purchase it these days - https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=912 https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=91... Also, I would think that the first transatlantic cable of this stuff might be kept pretty exclusive, given the economic opportunity presented by pissing around on the stock exchange. edit - here's some more recent press from the Southampton lot - https://www.ses.ac.uk/2019/04/03/fibre-optics/ https://www.ses.ac.uk/2019/04/03/fibre-optics/