China's Domestic Optical Fiber Sees Surge in Volume and Price Amid AI Infrastructure Boom
Global AI Infrastructure Expansion and Geopolitical Tensions Converge: China’s Optical Fiber Industry Enters a “Physical-Layer Boom” with Simultaneous Volume and Price Growth
In Q1 2024, China’s optical fiber industry is undergoing a rare structural leap: export growth exceeded 55%, while unit prices for high-specification bend-insensitive fiber (G.657.A2) surged from ¥32 per core-kilometer to ¥240 per core-kilometer—a staggering 650% increase. This phenomenon cannot be explained merely by short-term supply-demand imbalances. Rather, it reflects the confluence of three powerful forces: a paradigm shift in global computing infrastructure development, accelerated regional 5G network deployment, and geopolitical risk premiums. At its core lies a fundamental transition in AI development—from an “algorithmic race” to a “physical-layer scale-out phase.” Leveraging rapid technological iteration, superior cost control, and resilient engineering execution, China’s optical fiber value chain is historically positioned to capture the global wave of photonic interconnect infrastructure investment.
AI Compute Infrastructure Drives Optical Interconnect Upgrades in North American Data Centers
As the world’s primary hub for AI compute investment, North America is restructuring data center internal architectures and interconnect topologies at an unprecedented pace. According to Synergy Research, 83% of newly deployed hyperscale data centers globally in Q1 2024 were located in the U.S., with AI training clusters accounting for over 60% of that total. These clusters impose stringent requirements on optical interconnect bandwidth density: each AI server rack requires 200G–800G optical transceivers, and annual fiber consumption per data center has increased 3–5× compared to traditional cloud data centers. Particularly under high-speed interconnect architectures such as InfiniBand and NVLink 5.0, specialty fibers like G.657.A2—with bending radii ≤7.5 mm—have become essential for intra-rack short-reach cabling. Their exceptional bend resistance enables high-density cabling to navigate tight spaces repeatedly without signal degradation—effectively replacing conventional G.652.D fiber. Leading Chinese manufacturers—including YOFC and Hengtong—have achieved full process autonomy for this grade, with yields exceeding 92%, clearing a critical technical threshold for inclusion in Meta’s and Microsoft’s supply chains.
Notably, this price surge is not simply inflationary pass-through—it represents the explicit monetization of technological premium. The preform drawing process for G.657.A2 is 40% more complex than for standard fiber, demanding nanoscale precision in dopant concentration gradients and cladding structure design. Currently, only China, Japan, and South Korea possess mass-production capability—and thanks to capacity ramp-ups since 2022, Chinese producers now command 58% of global G.657-series fiber supply (CRU data), significantly strengthening their pricing power.
Southeast Asia’s 5G Backhaul Buildout Creates a “Second Growth Pole”
Beyond AI infrastructure, Southeast Asia is emerging as another major engine of optical fiber demand. Vietnam, Indonesia, Thailand, and other nations are entering the intensive phase of 5G base station rollout, with over 450,000 new sites expected in 2024. Unlike China’s three-tiered optical network architecture (front-haul + mid-haul + back-haul), Southeast Asian operators widely adopt a “fiber-direct-drive” model—connecting base stations directly to core networks via single-mode fiber to bypass microwave backhaul’s bandwidth bottlenecks. This has sharply increased demand for G.652.D fiber, compressing delivery lead times to under eight weeks (down from a 2023 average of 14 weeks). A Jiangsu-based exporter revealed that 70% of its orders bound for Vietnam specify low-loss fiber capable of >30 km unamplified transmission—priced 22% above standard grades.
Even more critically, Southeast Asia is rapidly adopting FTTR (Fiber-to-the-Room) residential broadband solutions. Philippine operator PLDT and Indonesian Telkomsel have launched tenders for millions of FTTR terminals, mandating in-home fiber capable of supporting Wi-Fi 7 multi-band concurrency. This requirement pushes upstream suppliers to adopt preforms with higher signal-to-noise ratios. Domestic preform manufacturers—including FiberHome Fujikura and Zhongtian Technology—are accelerating mass production of pure-silica core preforms, achieving refractive-index profile control accuracy of ±0.0001—35% tighter than international competitors—directly enabling downstream cable makers to secure high-margin orders.
Geopolitical Conflict Fuels “Strategic-Reserve Procurement” and Price Rigidity
Although the Strait of Hormuz blockade constitutes a localized crisis, it unexpectedly reinforced the global telecom infrastructure supply chain’s security logic. When Iran’s Islamic Revolutionary Guard Corps announced closure of the strait and the U.S. military initiated cross-regional seizures of Iranian-linked vessels, global telecom operators subtly shifted procurement behavior—from “just-in-time ordering” to “safety-stock front-loading.” One European operator, for example, placed a six-month forward order with a domestic Chinese supplier explicitly requiring “all fiber certified by SGS and accompanied by independent logistics traceability codes”—effectively elevating optical fiber to strategic-material status within its procurement framework.
This shift generates dual effects: First, international customers accept higher prices to ensure delivery certainty—the 650% price rise for G.657.A2 includes ~280 percentage points attributable to geopolitical risk premiums. Second, marine insurance rates surged 170% (Lloyd’s data), pushing buyers toward FOB pricing terms—allowing Chinese manufacturers to retain greater foreign-exchange fluctuation gains. More profoundly, submarine cable project bidding rules are being restructured: where “lowest-price wins” once dominated, “backbone-network delivery capability” now carries 45% weight in evaluation criteria—directly benefiting firms holding submarine cable manufacturing certifications (e.g., Hengtong Optic-Electric, Zhongtian Technology) and possessing transoceanic engineering experience. In Q1 2024, China’s submarine cable exports rose 127% YoY, with Africa–South America transoceanic projects accounting for 39% of the total.
Systemic Uplift of the Value Chain’s Profitability Center
Surging demand is propagating up and down the optical communications value chain. In the upstream preform segment, domestic localization rate has risen from 41% in 2019 to 76% in 2024—yet a gap remains in high-end pure-silica core preforms, driving surging demand for laser diode chips. Orders for related products from Changguang Huaxin and Yuanjie Technology are now scheduled through Q2 2025. In the midstream optical module segment, AI-driven optical interconnect upgrades propelled Q1 shipments of 800G DR8 modules to a 210% sequential increase, lifting gross margins for domestic component makers—including New Optics and Cambridge Industries—to 32.7% (up from 25.1% in Q4 2023).
A cautionary note: this upcycle exhibits pronounced structural characteristics. Firms lacking G.657-series fiber mass-production capability, submarine cable certification, or entry into North American AI customer supply chains face mounting order diversion pressure. Industry concentration continues rising: the CR5 (top five players) market share reached 63.5%—an 8.2-percentage-point increase from 2023. Simply scaling capacity is no longer decisive; instead, new competitive moats now consist of technology positioning (e.g., R&D in space-division-multiplexing fiber), standards participation (e.g., contributions to ITU-T G.654.E revision), and engineering capability (e.g., transoceanic submarine cable laying experience).
Conclusion: From “Made in China” to “Infrastructure Definition Power”
DeepSeek’s $10 billion valuation funding round appears, on the surface, a capital move by an AI model company—but it fundamentally signals a pivot in AI infrastructure investment priorities. As algorithmic frameworks converge, physical-layer variables—bandwidth density, transmission efficiency, and deployment flexibility—have become the decisive factors governing the breadth of AI application. China’s explosive global fiber orders exemplify the broader industrial transition: from technology “follower” to collaborative “rule-shaper.” Over the next six months, two key trends warrant close attention: (1) order fulfillment progress among enterprises holding dual certification for G.657.A2 fiber and submarine cables; and (2) patent portfolio developments by preform manufacturers in next-generation technologies such as hollow-core fiber (HCF). This physical-layer revolution—sparked by optical fiber—is ultimately set to reshape the global digital infrastructure governance landscape.