Internal optical interconnect distance of data centers

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Intra-data center interconnects usually have lengths up to 2kms, campus interconnects up to 10km, and metro DCIs up to 100km, although there can be longer DCIs. As data centers become more complex and AI increases its demands on them, the intra-data center sector is increasing in complexity and. Optical interconnects use light to transmit data between devices, leveraging the principles of photonics to enable high-speed communication. Key Factors driving higher capacity Data Center Interconnect bandwidth include: Gigabit Ethernet growth ‐ The growth of 10 Gigabit Ethernet (GE), 25 GE and 40 GE network adapters Cloud IT: A single request can trigger. SHENZHEN, May 11, 2026 — As large language model training enters the era of trillion‑parameter scale, the internal interconnect distance of AI compute clusters is becoming the new "red line" that determines training efficiency.

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