Chennai’s Folium Sensing turns fibre into infrastructure sensors

Chennai-based Folium Sensing has developed a method to convert communication fibre networks into real-time sensors for bridges, pipelines, and railways using laser light and machine learning.

The startup’s technology treats buried fibre as a distributed sensing medium, detecting vibrations and strain without additional hardware. According to YourStory, the system can identify structural anomalies, leaks, or unauthorized activity along extensive stretches of infrastructure from a single interrogation point.

Folium’s pitch centers on efficiency: since telecom fibre is already deployed, operators may avoid the complexity of installing separate monitoring systems. This could appeal to asset owners in regions where manual inspections remain common. The company has not disclosed customers or revenue, but its focus on passive sensing suggests a model that scales with existing fibre infrastructure.

The timing aligns with broader trends in infrastructure monitoring. When we covered Arista’s Ethernet-based AI backplane last month, the story highlighted the potential of repurposing network hardware for new applications. Folium extends that idea to physical assets, raising a broader question: if fibre can detect strain, what other ambient signals might be extracted from existing networks?

Sources: yourstory.com