The Fiber Optic Crisis: How Glass Thread Became a Battlefield for AI and Military Supremacy
Modern AI infrastructure and drone control systems have encountered an unexpected vulnerability — a shortage of fiber optic cable. Prices for some brands have soared by 500%, and China, which controls more than half of the global market, dictates supply terms. Other countries are trying to ramp up capacity, but remain hopelessly behind.
Technical Background of the Shortage
Fiber optics are three-layer glass threads that transmit light with virtually no interference. The core of ultra-pure glass (9–62.5 µm) is doped with germanium dioxide, the optical cladding of silicon dioxide ensures total internal reflection, and an acrylic coating protects against moisture. The key class for modern tasks is single-mode fiber G.657.A2 with a bend radius of up to 7.5 mm, critically important for dense switching in AI clusters and drone control under electronic warfare conditions.
The production of basic blanks — preforms — is accessible only to a few. The process requires creating a massive cylinder of ultra-pure quartz with ideal proportions, from which thousands of kilometers of fiber are then drawn.
Double Blow: AI and War
In 2026, the market experienced a shock from two sources of demand. The first is data centers. One NVIDIA NVL72 rack requires up to 1152 optical links, 36 times more than a classic server. Global data center demand has reached 100 million km of fiber optics per year.
The second is military. Amid the development of electronic warfare, drone operators have switched to wired drones resistant to jamming. In 2025 alone, Russia purchased about 60 million km of optical fiber after the shutdown of a plant in Saransk. Chinese enterprises, leveraging their monopoly, switched Russian manufacturers to 100% prepayment and raised prices for G.652.D by 2.5 times — from 16 to 40 yuan per kilometer. The conflict in the Middle East also increased demand: Hezbollah used fiber optic drones to bypass Israeli defense systems.
The paradox is that a 100-core trunk cable and a thin thread for FPV drones are made from the same raw material — quartz preforms. The two sectors consumed about a third of the global supply at the peak of the shortage, leading to a price increase for G.657.A2 of more than 500% — from $5 to $33 per kilometer.
Beijing's Monopoly and a Belated Response
The AI boom accelerated data center construction, but fiber optic production lags behind: it takes 3–5 years from plant construction to shipment. The optical preform market is a closed club: 62–70% of global production is controlled by the Asia-Pacific region, where China dominates mass production and Japan excels in complex technologies. North America holds 21%, Europe 14%. Nearly three-quarters of output is concentrated in the hands of a dozen corporations.
While the U.S. restricted China's access to semiconductors, dependence on fiber optics went unnoticed. China has subsidized its giants (YOFC, FiberHome, Hengtong) for decades. When neural networks required millions of kilometers of optics, the shortage became a pricing lever for Beijing.
The U.S. response was belated. In January 2026, Meta signed a $6 billion contract with Corning; in May, Nvidia invested $500 million in the company's securities. This should increase Corning's capacity in the U.S. tenfold, but real volumes will only appear by the end of the decade. Until then, there is no alternative to China.
The optical preform market was valued at $8.5 billion in 2025 and is projected to reach $37.5 billion by 2033 with a CAGR of 20.39%. However, no sharp price decline is expected in the next three to four years. Hyperscalers, military agencies, and providers are competing for the resource. Those who managed to secure contracts or have their own production will win.
My analysis: The fiber optic crisis is a classic example of how technological dependence, long remaining in the shadows, suddenly becomes a systemic constraint. Investors and strategists must consider that control over optical supply chains will become as much a competitive advantage as access to chips or electricity. Without production diversification, the market faces more than one price shock.