3 Hardware Configurations for Building Distributed Fiber DAS Systems

Overview

As a professional distributed fiber optic acoustic sensing (DAS) hardware manufacturer, we provide different system building programs for different customers. There are 3 ways to build — described below.

DAS includes hardware components and software — we focus on providing DAS hardware components; the software program needs to be developed by you.

Option 1: Using DAS Integrated Module and DAQ Board

The system is built directly with our integrated DAS integration module and DAS data acquisition card.

Applicable users: Users focus on business domain knowledge, signal data identification, and algorithms — they don't want to spend too much energy on hardware development, and want to realize a distributed fiber optic vibration system at low cost. Suitable for enterprise/university research labs with software programming capability.

DAS integration module and DAQ board system diagram

Build steps

  • Buy distributed fiber optic vibration sensing system DVS/DAS integrated module
  • Buy high-speed DAQ cards for distributed fiber optic vibration sensing systems
  • Buy an IPC and power supply (you can use your own computer instead), which needs to support PCIE interface
  • Connect the sensing fiber optic cable and write software to do data processing on the computer according to your business area

Wiring of the DAS Integration Module and Data Acquisition Card

Option 2: Built using separated components

Applicable users: University laboratories, graduate students of scientific research institutions and R&D departments of enterprises that are good at hardware, optical devices, FPGAs, etc., familiar with fiber optic sensing principles and DVS/DAS optical paths, and want to implement distributed fiber optic vibration systems independently.

DAS separated components optical path diagram

Build steps

  • Buy optical devices such as narrow linewidth lasers, EDFA, AOM, Raman amplifiers, photodetectors, etc.
  • Buy high-speed DAQ cards for distributed fiber optic vibration sensing systems
  • Device connection, debugging, and solving various problems encountered during debugging
  • Acquire data and do signal demodulation processing to implement your own software program

Commonly used programs

80M AOM scheme:

200M AOM scheme:

DAS Hardware Components

1550nm 3k narrow line width laser 1550nm 3k narrow line width laser output power 10mW Dual Port 250MSps High-Speed DAQ Dual Port 250MSps High-Speed DAQ For DVS/DAS 1GSps dual-channel DAQ card 1GSps dual-channel high-speed data acquisition card Balance photodetector for DAS/DVS Balance photodetector for DAS/DVS 1550nm AOM 80Mhz 1550nm Fibre-Coupled Acousto-Optic Modulator 80Mhz 1550nm AOM 200Mhz 1550nm Fibre-Coupled Acousto-Optic Modulator 200Mhz Optical splitter Coupler Optical splitter Coupler (50:50/90:10 etc.) EDFA Raman Integrated Module EDFA & Raman Integrated Amplification Module 1550nm PZT Module PZT Module

Option 3: DAS hardware all-in-one solution

We integrated the DAS module, DAS capture card, and computer into a chassis. Users can plug in the optical fiber directly for use, with pre-installed DEMO software for data acquisition and data export.

Full-Clock-Synchronized DAS All-in-One Unit DAS hardware all-in-one solution