Introduction to Photonic Disaggregated Computing Architecture - Shigeru Kotabe, Fujitsu#

Shigeru Kotabe, Leading Researcher (AI deployment infrastructure), Fujitsu

• Why: Direct photonic interconnect between compute devices is one of the candidate paths past power- and bandwidth-limited conventional server architectures for AI-era workloads — this is a research lab's concrete architecture proposal, squarely in the PM's optics/DC-compute interest.
• What: Fujitsu's "photonic disaggregated computing" architecture with three features: reconfigurable devices for flexible hardware allocation, device-to-device communication to reduce CPU load, and direct photonic connections between devices; plus use cases. (from abstract only)
• How: Rather than scaling by adding conventional servers, hardware is disaggregated into reconfigurable pools linked by direct photonics, letting device-to-device paths bypass host CPUs for data movement.
• Where applicable: Early-stage research architecture, not a shipping product — relevant as a direction signal for future AI-infrastructure interconnect; Fujitsu-specific, and no evaluation numbers are given in the abstract.