Reimagining interconnects: The expanding role of optical circuit switching in telecom, AI, and data infrastructure

Traditionally, telecom and data systems relied on electronic packet switches - Ethernet, IP/MPLS, or InfiniBand - involving multiple Optical-Electrical-Optical (OEO) conversions. These conversions introduce latency and power overhead, which become significant at scale.

• In telecom networks, it means slower routing, higher energy costs, and limited scalability.
• In AI/ML clusters, it means bottlenecks in GPU-to-GPU communication.
• In lawful intercept, it means delays in traffic capture and analysis.

An Optical Circuit Switch (OCS) changes this paradigm. Instead of repeatedly converting optical signals to electrical form, OCS keeps the signal entirely in the optical domain - from source to destination. Think of it as a reconfigurable fiber patch panel but controlled by software in milliseconds. When two servers or racks need to communicate, the OCS creates a dedicated optical path between them - no packets to process, no queues, no buffers, no conversions.

Optical Circuit Switches use a variety of technologies including piezoelectric actuators, MEMS mirrors, liquid crystal or silicon photonics to steer light paths in a non-blocking, scalable manner.

OCS enables a true optical interconnect fabric - dynamic, high-capacity, and energy-efficient - ideal for:

• Telecom Core Networks: Facilitates dynamic routing and bypassing congested nodes.
• AI/ML Workloads: Facilitates high-bandwidth, low-latency interconnects between GPUs or accelerators in photonic fabrics.
• Lawful Intercept: Enables secure, low-latency optical paths for monitoring traffic without packet inspection overhead.
• Disaster Recovery: Allows rapid reconfiguration of optical paths between geographically distributed data centers.
• Edge Computing and 5G: Supports flexible, scalable interconnects between edge nodes and central clouds.

As telecom, cloud and compute domains converge, the interconnect fabric becomes a strategic asset. Optical Circuit Switching is not just a faster way to connect systems - it is a foundation for disaggregated, composable and energy-aware data centers.

Tomorrow's infrastructure will be built around the principle of "switch when you can, route when you must" - using OCS to create optical pathways that make data movement instantaneous, efficient and adaptive to workload needs.