VIAVI Unveils True-Phase DAS Fiber Sensing Interrogator with AI/ML at the Edge

Key Takeaways

• True‑phase DAS provides precise strain and vibration metrics
• On‑device AI classifies events without remote servers
• Supports leak, digging, vehicle, and footstep detection
• Single fiber monitors acoustic, temperature, strain simultaneously
• Scalable models auto‑update via private or VIAVI cloud

Summary

VIAVI Solutions introduced a next‑generation True‑Phase Distributed Acoustic Sensing (DAS) interrogator that embeds AI and machine‑learning at the network edge. The device leverages VIAVI’s patented phase‑stepping interferometry to deliver accurate strain, vibration and acoustic measurements across multiple fibers. Real‑time event classification occurs on‑device, eliminating the need for centralized processing. Integrated with the NITRO Fiber Sensing platform, the solution targets pipelines, data‑centers, borders and other critical infrastructure.

Pulse Analysis

The distributed acoustic sensing market has matured from niche telecom monitoring to a cornerstone of critical‑infrastructure security. Operators now demand continuous, high‑resolution insight across tens of kilometres of fiber without the latency of cloud‑based analytics. By embedding AI at the edge, VIAVI’s interrogator meets this demand, delivering instant classification of acoustic signatures while preserving bandwidth and privacy. This shift mirrors broader industry trends where edge compute is becoming essential for real‑time decision making.

At the heart of VIAVI’s offering is a patented true‑phase interferometry technique that extracts the optical phase from Rayleigh backscatter. Unlike conventional intensity‑based DAS, this approach yields repeatable, quantitative data on strain, vibration amplitude, frequency and acoustic power. The richer dataset fuels more robust machine‑learning models, enabling finer discrimination between events such as pipeline leaks, excavation activity or pedestrian movement. Moreover, the on‑device AI engine continuously refines its algorithms using decades of historical data, ensuring accuracy improves over time without manual re‑training.

For businesses, the technology translates into lower operational expenditures and heightened risk mitigation. Energy firms can detect leaks and third‑party interference before costly damage occurs, while data‑center operators gain granular insight into cable health and environmental conditions. The ability to run analytics locally also simplifies regulatory compliance by keeping sensitive data on‑premise. As more sectors adopt fiber‑based sensing, VIAVI’s edge‑AI DAS positions the company as a strategic partner for next‑generation infrastructure monitoring, potentially reshaping market dynamics in favor of integrated, intelligent sensing solutions.