The usage of fiber optic is growing in: 1) Internet Backbone 2) Wireless System Backhaul, Antenna Connections 3) Smart Grid - Utilities 4) Metropolitan Networks 5) Security Systems 6) Data Centers 7) Fiber To The Home (FTTH) 8) OLANs 9) …and more! Fiber use is growing in many areas – even wireless, depends on fiber optics for its communications backbones.
US fibre cable map. "This work is about how the US long-haul fiber infrastructure looks like, how resilient it is, how it impacts risks, and how we can improve it. Ram mentioned that no one has a complete view of the Internet at a physical level"