Distributed Acoustic Sensing (DAS) Modules & Systems
Integrated DAS modules and all-in-one sensing hosts for distributed fiber optic acoustic sensing — plus compact DVS modules for perimeter and cable monitoring. From pulsed RF research modules to field-ready AIO systems.
- Integrated optics Laser, AOM, EDFA & detection in compact modules
- 2–10 m resolution Narrow-pulse and standard options for different ranges
- OEM-ready Modules, all-in-one units & clock-synced DAQ pairs
- Field & lab use Perimeter DVS, cable locating, research & teaching
DAS Products by Application
All-in-One DAS Systems
Complete hardware with integrated demodulation — connect fiber and run your application software. Best for enterprise users who need a ready sensing platform without building an optical bench.
DAS Integration Modules for OEM & System Builders
Optical demodulation modules for custom chassis integration. Pair with our DAQ boards for clock-synchronized acquisition, or use modules with built-in acquisition where noted.
Compact DVS Modules
Smaller-form-factor DVS hardware for perimeter intrusion detection, fiber cable localization, and portable monitoring projects.
DAS Education & Commissioning Tools
Teaching instruments and calibration accessories for DAS labs, demos, and system validation.
How to Choose the Right DAS Module
- Need a complete system quickly? Start with an all-in-one unit (GY-AIO-DAS series) — fiber in, data out, minimal integration work.
- Building your own chassis or software stack? Choose an integration module (GY-DAS-V4, GY-DAS-UNP, GY-DAS-CFS) and add a matched DAQ card for synchronized acquisition.
- Developing custom pulse schemes or chirp DAS? The pulsed RF input module (GY-DAS-RF) accepts external AWG/RF sources for research flexibility.
- Perimeter or cable locating only? Mini-DVS offers a compact DVS-focused path without full DAS demodulation complexity.
- Teaching or lab demonstration? DAS-EDU plus a PZT vibrator provides a visual, hands-on fiber sensing setup.
For a deeper application guide with product recommendations by user type, see our DAS Applications page or the How to Build a DAS System technical guide.
What Are DAS Modules & Systems?
DAS (Distributed Acoustic Sensing) modules and all-in-one systems combine the core optoelectronics of a fiber sensing interrogator — narrow-linewidth laser, pulse generation, amplification, and coherent detection — into ready-to-deploy hardware. Instead of sourcing and aligning separate lasers, AOMs, and EDFAs, system builders receive a pre-engineered optical front-end for sensing fiber and a data acquisition card.
YB Photonics DAS products span turnkey all-in-one hosts for enterprise deployment, compact integration modules for OEM chassis, and research-grade units with external pulsed RF inputs. We also offer DVS (Distributed Vibration Sensing) modules such as Mini-DVS for perimeter intrusion and cable localization where full acoustic demodulation is not required. Applications include pipeline and cable monitoring, geophysical survey, structural health monitoring, and university fiber optic sensing laboratories.
Key Specifications to Compare
| Parameter | Why it matters | Typical range in this category |
|---|---|---|
| Spatial resolution | Minimum detectable event length along the fiber | 2 m (narrow-pulse) to 10 m (standard) |
| Sensing range | Maximum fiber distance per channel | 40–80 km depending on module & pulse scheme |
| Form factor | All-in-one vs module for custom integration | Rack/chassis AIO, 3U module, Mini-DVS |
| DAQ interface | On-board card vs external acquisition | Integrated PCIe/Ethernet or paired DAQ board |
| Pulse input | Fixed internal AOM vs external RF pulse shaping | Internal AOM or pulsed RF input (research) |
Frequently Asked Questions
- What is the difference between DVS and DAS?
- DVS (Distributed Vibration Sensing) emphasizes vibration detection and alarm triggering along a fiber, while DAS (Distributed Acoustic Sensing) typically refers to capturing acoustic waveforms for analysis. In practice, both use similar φ-OTDR phase demodulation hardware — YB Photonics modules support both vibration monitoring and acoustic data acquisition depending on your software.
- Do I need a separate DAQ card with an integration module?
- Most integration modules output analog or digital signals that require a data acquisition board for sampling and demodulation. Some models (such as GY-DAS-CFS) include an integrated acquisition card. Browse our DAQ category for PCIe and Ethernet options matched to DAS rates.
- What spatial resolution should I target?
- Standard modules deliver 6–10 metre resolution suitable for pipeline and perimeter monitoring. Narrow-pulse and enhanced all-in-one systems achieve 2–3 metre resolution for finer event localization in research or high-value asset monitoring.
- Can YB Photonics modules be customized for OEM projects?
- Yes. We support OEM integration including form-factor adjustments, interface changes, and pulsed RF input configurations. Contact sales with your sensing range, resolution, and chassis requirements for a tailored recommendation.