Data Centers Boosted Orders for Optical Cables
Increased demand for high-capacity connectivity drove new supply contracts for South Korean firms throughout 2026.
Updated on Oct. 11, 2026 in Data Centers
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Throughout 2026, U.S. data centers significantly increased orders for high-density optical cables from South Korean manufacturers to handle rising AI internal communication needs. Contracts and projects surged, including a 35.5 billion won deal for Taihan Fiberoptics and a massive 7,000-km undersea cable project unveiled by Meta.
Why it matters
As AI data centers scale up, rising GPU density mandates higher-capacity data transmission paths between servers. This shift has necessitated advanced optical infrastructure capable of managing intense internal traffic and connecting large-scale facilities globally.
Manufacturers are producing specialized high-density cables, such as units containing 864 optical fibers, to optimize connectivity in confined spaces. Meta's upcoming Petal undersea cable project aims to provide 1 petabit per second transmission capacity over 7,000 km.
The players
Taihan Fiberoptics
A South Korean manufacturer specializing in fiber optic cables and high-capacity connectivity products for data centers.
Meta
A global technology conglomerate that owns major social media platforms and invests in extensive undersea digital infrastructure.
Corning
An American multinational company recognized for its expertise in materials science, particularly in optical communications and glass technology.
LS Cable & System
A major South Korean manufacturer of industrial cables and systems used in power and communication infrastructure.
Verizon
A leading American telecommunications provider that manages large-scale network infrastructure and data connectivity solutions.
The details
South Korean firms like Taihan Fiberoptics and LS Cable & System have expanded production of MPO trunk and fan-out cables to meet these specific hardware demands. These components are essential for maintaining stable performance as data centers attempt to manage the increased communication volumes generated by high-density AI infrastructure.
Timeline
February 2026: Taihan Fiberoptics secured its initial U.S. data center order.
May 2026: LS Cable & System showcased new optical products at ANGA COM.
June 2026: Taihan Fiberoptics finalized a 35.5 billion won optical cable contract.
September 8, 2026: Verizon and Corning announced a long-term fiber supply contract.
September 21, 2026: Meta unveiled the 7,000-km Petal undersea cable project.
The Tech Race
The transition to high-capacity optical systems reflects a structural pivot in the data center industry as traditional copper-based connectivity hits physical bandwidth limits. This hardware evolution positions manufacturers to capitalize on the massive infrastructure investments required by the global AI sector.
The adoption of high-density cabling improves internet reliability and data transmission speeds for global users by reducing bottlenecks at the data center level. While the impact is primarily on network efficiency, these technological upgrades are essential for maintaining access to high-demand AI and cloud services.
The takeaway
The move toward high-density optical fiber is a necessary scaling response to the massive data demands of modern AI models. Infrastructure providers must increasingly rely on specialized, high-capacity components to ensure that data centers can operate without compromising on connectivity speed.
Further reading
For broader trends in infrastructure, read more on Data Centers.
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