State of Wisconsin CIO David Cagigal has a simple goal: To “never spend another dollar” on laying optical fiber cable for data projects involving state government and its partners. If that sounds unrealistic, consider that millions of miles of “dark fiber” — meaning, high-bandwidth fiber not in use — already exist in the United States. … Finding and lighting dark fiber will help Wisconsin prepare for the predicted bandwidth crunch brought on by the “Internet of Things” and the explosion in mobile devices, Cagigal and UW-Madison Chief Information Officer Bruce Maas told a July 28 meeting of the Wisconsin Innovation Network.