What are the future development trends of optical fibers and network cables?

What are the future development trends of optical fibers and network cables?
The future development trends of optical fibers and network cables exhibit distinct characteristics of "dual polarization and deep integration": Optical fibers are evolving from traditional communication conduits to the "core blood vessels" of the AI computing power era, moving towards ultra-high speed, low latency, and low power consumption; while network cables (copper cables) are gradually retreating to short-distance and low-power end-user access scenarios, while seeking breakthroughs through material upgrades and hybrid technologies.

I. Development Trends of Optical Fibers: "Super Cycle" Driven by AI Computing Power
With the explosive demand for AI large model training and inference, optical fibers are undergoing a historic leap from "periodic manufacturing" to "core assets of AI computing power infrastructure".
Rate evolution towards 1.6T and higher orders
The extreme requirements of AI computing power for bandwidth and latency are driving optical communication technology to accelerate its leap. In 2026, 800G optical modules enter large-scale deployment, and 1.6T optical modules enter the commercialization year. In the future, 400G/800G high-speed interconnection technologies will support the construction of a three-dimensional connection at the backbone layer, meeting the cross-domain high-speed interconnection needs of "East Data West Computing".
New optical fiber technologies accelerate commercialization
To cope with massive interconnection and reduce energy consumption, optical fiber products show a trend of high-endization:
Air-core optical fibers: The transmission loss is 50% lower than that of traditional optical fibers, and the latency is reduced by 31%, and will become the core material for next-generation data center interconnection.
Ultra-low loss optical fibers (such as G.654.E): The loss in long-distance transmission is lower, significantly reducing the energy consumption of AI data center interconnection.
Multi-core optical fibers: Research is accelerating, aiming to increase the single-fiber capacity to meet the massive interconnection demands of multi-gigabyte GPU clusters.
Optoelectronic co-packaging (CPO) breaks the power wall
To solve the energy consumption and heat dissipation problems in high-speed transmission, CPO technology, where optical engines and GPU chips are directly packaged together, has become the preferred solution for AI clusters. It compresses the transmission distance of electrical signals to the millimeter level, significantly reducing energy consumption and latency.
Supply and demand pattern reshaping and high price operation
Driven by AI data center construction, global optical fibers face a significant supply-demand gap (the gap is expected to reach 180 million kilometers in 2026). Due to the long production cycle of "optical fiber preforms" of 18-24 months, the prices of high-end optical fibers (such as G.657.A2) have soared several times. The optical communication industry has entered at least a 3-5-year upward cycle.
II. Development Trends of Network Cables (Copper Cables): Retreat to Short Distances and Green Intelligence
Although replaced by optical fibers in long-distance and ultra-high-speed transmission, network cables remain indispensable at the end of local area networks, and their development focuses on the following directions:
Evolution towards higher bandwidth and strong anti-interference
Ethernet cables are evolving towards supporting 400G and 800G. For example, Category 8 (Cat8) network cables can support a transmission rate of up to 40Gbps within a short distance (30 meters) and with strong anti-interference capabilities, making them an ideal choice for data center switches and high-performance computing scenarios.
Continuous increase in PoE (Ethernet Power) power
With the popularization of smart buildings and IoT devices, PoE technology has become more powerful. The IEEE 802.3bt standard enables up to 100 watts of single-port power supply, allowing network cables to simultaneously provide data and power for more power-consuming devices, further reducing wiring clutter and installation costs.
Green environmental protection and intelligent management
Green materials: Low smoke halogen-free (LSZH), biobased plastics, and recyclable materials are becoming increasingly common in network cable manufacturing to meet ESG compliance and low-carbon requirements.
AI empowerment: AI technology is integrated into network management, enabling predictive analysis to detect potential risks before faults occur, achieving automated wiring optimization and intelligent maintenance.
III. Integration Trend: Hybrid Solutions of Optical Fibers and Copper Cables The future is not an absolute replacement of optical fibers by network cables, but rather a trend towards complementary advantages. The hybrid optical-copper cable is receiving increasing attention. It combines the high-speed data transmission of optical fibers with the power supply capability of copper cables. This hybrid solution can find the best balance among cost, performance, and power efficiency, and is particularly suitable for 5G base station backhaul, smart grids, and specific connection scenarios within data centers.
In summary, optical fibers are leading the construction of the "arteries" of core backbone networks and AI computing power clusters, pursuing the ultimate bandwidth and energy efficiency; while network cables continue to play the role of "capillaries", serving as indispensable components in short-distance access, equipment power supply, and low-cost interconnection.