AT&T has set a new benchmark in fiber-optic networks by achieving a data transfer speed of 1.6 Tbps. This milestone was accomplished over its long-distance commercial network spanning 296 kilometers between Newark and Philadelphia. The equipment used for this trial included technology from industry leaders like Ciena, Broadcom, Coherent, and Keysight.
This development provides AT&T a competitive edge, at least temporarily, in the ongoing race for network supremacy among U.S. telecom operators. In a similar technological endeavor, Verizon had previously announced achieving a 1.6 Tbps speed on its metro fiber network. However, AT&T’s accomplishment stands out for covering long-distance connectivity, a significant differentiating factor that may grant them bragging rights.
For years, major U.S. telecom operators have focused primarily on mobile networks. However, intensifying competition is now shifting focus to fixed networks. Both AT&T and Verizon are heavily investing in fiber infrastructure. While Verizon explores mergers and acquisitions, AT&T is building its way toward market leadership, targeting a fiber footprint of 50 million locations by 2029.
The trial utilized innovate technologies: open-source white box switches powered by Broadcom chips and optical transponder kits from Ciena. This setup multiplexed two 800 GbE signals to achieve the 1.6 Tbps speed. The trial also integrated Coherent transceivers, which facilitated cross-office connectivity over the long-distance route.
As consumer demand grows for connected devices, streaming, and data services, AT&T foresees a doubling of network traffic by 2028. “The technologies demonstrated will play a key role in AT&T’s continued efforts to meet increasing customer demand,” noted Mike Satterlee, AT&T’s VP of Network Infrastructure and Services.
