Verizon and NEC used artificial intelligence (AI)-infused software and sensors as part of a recent proof-of-concept (PoC) trial that allowed already installed fiber infrastructure to monitor traffic and road conditions.

The PoC used NEC-developed optical sensor technology with the AI software running alongside existing wavelength division multiplexing (WDM) communication channels on the same fiber lines. The mixture turned the cables into distributed optical sensors that collected information on traffic patterns, road conditions, road capacity, and vehicle classification information.

The AI tools used included convolutional neural networks (CNN) and software vector machines that were able to tap into distributed intelligent traffic informatics (DITI). Those tools were plugged into a single integrated monitor that was able to detect back-scattering light traveling through the fiber optic streams to detect static strain, dynamic strain, acoustics, vibrations, and temperatures for each fiber segment. That data can then be used to support actionable information regarding traffic planning.

The companies claimed the trial marked the first time that a 36.8 Tb/s data transmission system (fiber) and distributed optical fiber sensing were successfully demonstrated to work together through an “operational telecom network.”

Adam Koeppe, SVP of technology planning and development at Verizon, explained in a statement that the technology cocktail can support smart city initiatives without having to rip up streets to install “traffic-sensing technology.”

“Cities will be able to simply piggyback Verizon’s existing fiber optic network,” he added, wisely pointing to the business model behind the technology.

The carrier noted it was “uniquely positioned” to handle such support due to its “hundreds of thousands of miles of fiber already in place and plans to deploy 1,400 miles of additional fiber per month.” Those expansion plans are tied to a handful of deals signed with Corning, Prysmian Group, and WideOpenWest valued at around $1.5 billion. Verizon management has cited its fiber investments as core to support its 5G network plans.

While extensive, Verizon is not the only telecom operator boasting of its expansive fiber footprint.

CenturyLink recently announced it’s expanding its intercity fiber network to 4.7 million miles, which it claims to be the largest network of its kind in North America. That footprint was helped by CenturyLink’s $34 billion acquisition of Level 3 Communications.

Similar to Verizon, CenturyLink is also relying on Corning to supply fiber for its expansion.