Industrial optical sensor interrogator Distributed Acoustic Sensing (DAS)

field

Overview
Distributed Acoustic Sensing (DAS) is a fiber-optic interrogator that provides continuous, distributed, low-noise quantitative measurements of optical phase along the full length of standard telecommunication fiber. It functions as an array of thousands of virtual sensors (microphones/geophones) without the need for electrical cables or batteries, enabling simplified deployment and lower maintenance.

Additional features
The system integrates optical hardware and control/processing electronics in a single rack unit and includes a software suite for measurement control, customization, and real-time or offline data visualization and processing. Real-time data streaming, remote control and configuration are supported via ZeroMQ. Matlab and Python libraries are available on request for data management and advanced processing.

Applications

• Structural health monitoring
• Seismic monitoring and earthquake detection
• Subsea infrastructure monitoring
• Real-time road and motorway traffic monitoring
• Telecom network integrity monitoring

Optical specifications
Sensing range: 40 km
Number of channels: 1 (2 available on request)
Acquisition frequency: 1–100 kHz
Spatial resolution: 5–50 m
Gauge length: 5–50 m
Spatial sampling: 0.2–1.6 m
Noise floor: 10 pε/√Hz
Operating wavelength: 1550 nm
Optical power (peak): 23 dBm typ.
One-way power budget: 8 dB
Fiber type: SMF/MMF
Fiber connectors: FC/APC (other options on request)

Physical characteristics
Enclosure: Aluminum 19" 4U rack-mount cabinet (rigid lightweight ABS carrying case available on request)
Operating temperature: 0 to 50 °C
Storage temperature: -20 to +70 °C
Humidity: 10–100% non-condensing
Dimensions (LxWxH): 550 x 180 x 430 mm (19" 4U)
Weight: 18 kg

Technical specifications

• Sensing range: 40 km
• Number of channels: 1 (2 available on request)
• Acquisition frequency: 1–100 kHz
• Spatial resolution: 5–50 m
• Gauge length: 5–50 m
• Spatial sampling: 0.2–1.6 m
• Noise floor: 10 pε/√Hz
• Operating wavelength: 1550 nm
• Optical power (peak): 23 dBm typ.
• One-way power budget: 8 dB
• Fiber type: SMF/MMF
• Fiber connectors: FC/APC (other options on request)
• Enclosure: Aluminum 19" 4U rack-mount cabinet (ABS carrying case available on request)
• Operating temperature: 0 to 50 °C
• Storage temperature: -20 to +70 °C
• Humidity: 10–100% non-condensing
• Dimensions (LxWxH): 550 x 180 x 430 mm
• Weight: 18 kg