Acoustic monitoring device

vibrationlaseroptical

Product Overview
YOEC Distributed Fiber Acoustic Sensing (DAS) Module is a distributed vibration and acoustic monitoring system for continuous real‑time sensing along optical fibers. The module integrates YOEC‑developed core optical components including an ultra‑narrow linewidth laser, acousto‑optic modulator, EDFA and polarization diversity unit.

Applications

• Oil & Gas Pipeline Monitoring
• Perimeter Security Monitoring
• Rail Transit Systems
• Municipal Utility Tunnels and Corridors
• Critical Infrastructure Monitoring

Key Features

• Highly integrated optical and electronic architecture
• Ultra‑high sensitivity detection with coherent demodulation
• Fully domestic core components (YOEC)
• Industrial‑grade reliability for continuous operation
• High‑precision event localization and identification

Typical Specifications

• Operating Wavelength: 1550.12 nm
• Sensing Range: 10 / 25 / 50 km (optional)
• Spatial Resolution: 5 / 10 m
• Frequency Detection Range: 0.1 Hz – 5 / 2 / 1 kHz
• Operating Voltage: 12 V DC
• Operating Temperature: -20 ~ +60 °C
• Storage Temperature: -30 ~ +85 °C
• Dimensions: 430 × 200 × 45 mm
• Pigtail Type: SMF
• Modulation Mode: External Modulation
• Sensing Channels: Single‑channel / Dual‑channel (optional)

Summary
The YOEC DAS Module combines integrated hardware and coherent detection to deliver stable, long‑distance distributed sensing with high sensitivity and accurate event recognition. Available in multiple sensing ranges and channel configurations, it is suited for intelligent infrastructure monitoring and next‑generation distributed sensing deployments.