Optical circuit switching
Switches that steer beams of light directly, so data centers can rewire their network on the fly without turning light back into electricity.
Ranks moderate (53/100) — set apart by cross-layer reach (66) and recent news intensity (21).
Why it matters
It can remove an entire tier of electrical packet switches and their transceivers from the fabric, changing the power, cost and reliability math of large clusters.
Why now
Google has disclosed OCS as core to TPU v4/v5 pods and its Jupiter fabric, and with interconnect power and optics cost now limiting GPU clusters, reconfigurable optical switching is moving from a hyperscaler curiosity toward a broader scale-out option.
If Optical circuit switching runs short
Slow reconfiguration, insertion loss, or a thin vendor base limits OCS to niche topologies, leaving clusters dependent on power-hungry packet-switch tiers.
In depth · editorial + model
All-optical, reconfigurable switches (often MEMS mirror arrays) that patch fiber paths without optical-to-electrical conversion, letting operators change fabric topology in software. It can remove an entire tier of electrical packet switches and their transceivers from the fabric, changing the power, cost and reliability math of large clusters. Google has disclosed OCS as core to TPU v4/v5 pods and its Jupiter fabric, and with interconnect power and optics cost now limiting GPU clusters, reconfigurable optical switching is moving from a hyperscaler curiosity toward a broader scale-out option. Slow reconfiguration, insertion loss, or a thin vendor base limits OCS to niche topologies, leaving clusters dependent on power-hungry packet-switch tiers.
Who makes Optical circuit switching
The companies exposed to Optical circuit switching
How to think about it
- Circuit switching trades flexibility for power and cost
- Removing a conversion removes a whole cost tier
- Topology-in-software is a capability, not just plumbing
What to watch
- OCS adoption beyond Google into GPU fabrics
- Switching speed and insertion-loss improvements
- Vendor base and supply concentration (MEMS/beam-steering)
- Standardization and control-plane maturity
Frequently asked
What is Optical circuit switching?
Switches that steer beams of light directly, so data centers can rewire their network on the fly without turning light back into electricity.
Why does Optical circuit switching matter for AI?
It can remove an entire tier of electrical packet switches and their transceivers from the fabric, changing the power, cost and reliability math of large clusters.
Who makes Optical circuit switching?
The companies the model tags as producers or suppliers of Optical circuit switching: Alphabet (Google), Coherent, Lumentum.
Which companies are most exposed to Optical circuit switching?
Alphabet (Google), Coherent, Lumentum — 3 companies in total are mapped to Optical circuit switching.
What happens if Optical circuit switching runs short?
Slow reconfiguration, insertion loss, or a thin vendor base limits OCS to niche topologies, leaving clusters dependent on power-hungry packet-switch tiers.
Where does Optical circuit switching sit in the AI value chain?
Optical circuit switching sits in the Infrastructure layer of the AI value chain.
Go deeper on Optical circuit switching
- The materials, geographies and policies it depends on — heat-mapped
- Substitutes, relief valves and the domino chains if it tightens
- The live tension score, momentum and news drivers
- Four levels of analysis — from plain-English to strategic
model v0.7.0 · research, not advice
Model scores are illustrative reads from our model of the AI value chain — not investment advice.