Distributed Acoustic Sensor Technology

Optromix solutions turn a fiber optic cable into a distributed sensor capable of temperature and vibroacoustic monitoring.

DAS Specifications

Spatial resolution From 1 meter
Frequency range Up to 12.5 kHz at 4 km
Up to 10 kHz at 5 km
(depends on the length of the cable)
Sensitivity length 40 km
Number of optical channels Up to 2

Control activity principle

Coherent light-sensitive reflectometer:

  1. A pulse is transmitted into the optic fiber and is scattered at refracted irregularities.
  2. Backscattered signal is registered by the photodetector.
  3. Due to light source high coherence length the backscattered signal becomes sensitive to vibration impact.
  4. Variations in the backscattered signal caused by environment's impact on the fiber are picked by the equipment. The signal without impact virtually does not change in time, while in the presence of impact it begins to oscillate.
  5. By means of signal filtering through special algorithms it is possible to locate the section where the impact occurs, as well as classify the source of oscillations.

DAS System Components:


Distributed acoustic sensor.
The sensor can be either mounted on the object, or buried at a certain distance from it


Incab InGound Stainless Steel Tube


Software for remote control and status monitoring

Distributed Acoustic Sensor Solutions

Leakage detection and activity control

168 km underground pipeline of oil/gas-condensate field activity control



Perimeter Security

1km 200m perimeter of a hotel and tourist complex.

Two fiber optic cable lines:

  • on fencing;
  • in ground perimeter fencing.


Vibroacoustic monitoring of oil wells

  • Determination of the fluid’s inflow intervals;
  • Finding the points of leakage of columns and packers;
  • Determination of the hydraulic fracturing intervals


Optromix provides a full range of services:

  • Research programs, interpretation reports;
  • Layout design, system software modelling;
  • Commissioning, user training, real-time data transition;
  • Equipment supply;
  • Ground part installation, engineering and technical support

For more information on DAS, please contact us at: or +1 617 558 98 58