looks like all that dark fiber left over from the tech bubble is being used.

http://seekingalpha.com/article/221714-lightwave-logic-ushering-in-a-new-era-of-data-communications?source=dashboard_stocks-sectors

Conclusion

Adding up all the addressable markets for Lightwave Logic’s advanced material matrix could get one to potential revenue numbers so large as to appear exaggerated. The more likely scenario is that the company won’t be around to generate the sales. Once the patents are filed and a large customer agrees to move into a commercial implementation, Lightwave Logic will likely be acquired because the technology would be too important for large players to want to share with competitors.