Weak Signal's progress: advanced
The source of this Weak Signal:
http://www.corning.com/index.aspx , http://www.youtube.com/watch?v=6Cf7IL_eZ38&feature=youtu.be
When did the Weak Signal manifest ?
2005-now
Weak Signal's description
Currently more than 1.5 billion kilometers of optical fiber is deployed around the world, connecting people, businesses, communities, countries, and continents.