Light Source Communications (LSC) has launched its third network build of the year, a 400-mile long-haul dark fiber route connecting Amarillo, Texas, Oklahoma City, Stillwater, and Tulsa, Oklahoma.

Backed by seven in-line amplifiers (ILAs) to eliminate signal degradation and ensure robust connectivity, the new long-haul route will deliver high-capacity, diverse capacity between these markets to deliver massive capacity for GPU-dense clusters, minimal latency for real-time processing, and maximum diversity to ensure network resilience. LSC’s custom dark fiber infrastructure is purpose-built to support hyperscalers, neoclouds, Machine Learning (ML) and other High-Performance Computing (HPC) applications.

“Bridging these markets is a critical new catalyst for next-generation computing,” said Debra Freitas, CEO of LSC. “The combination of this route, along with our St. Louis-Tulsa corridor, creates a powerful regional interconnection opportunity for the Central U.S., delivering the massive capacity and diverse pathways required for the AI era.”

Construction is expected to be complete in the first quarter of 2027 and is running concurrently with the building of LSC’s long-haul route linking Tulsa and St. Louis. The St. Louis-Tulsa route is 500 miles of AI-generation dark fiber supported by eight ILAs and anchored by a hyperscale tenant. Both long-haul routes will connect with LSC’s existing 130-mile dark fiber metro ring in the Tulsa area.

LSC is significantly advancing its network expansion goals this year. In addition to the Amarillo–Oklahoma City–Stillwater–Tulsa and St. Louis–Tulsa corridors, the company has introduced a new dark fiber network within the Indianapolis metropolitan area.

This 240-mile route is specifically engineered to support hyperscalers, neoclouds, and large-scale enterprises in managing GPU-intensive workloads and maintaining global competitiveness. The infrastructure will feature five high-capacity rings spanning 20 municipalities, offering direct connectivity to multiple regional data centers.

Read the full announcement here.