Optical fiber based sensor system for monitoring of infrastructures

FEBUS Optics is an innovative company based in Pau (France) bringing a new generation of optical fiber based sensor system to the market, in particular for the maintenance and monitoring of infrastructures.

Range Extension Module

febus rem

  • Range extension for the FEBUS A-Series and the FEBUS G-Series
  • Very low consumption: typically 10 W
  • No need for calibration
  • Long service life: 25 years
  • Integration along the fiber optic line


The Range Extension Module (REM) is a product designed by FEBUS Optics to gain optical budget on a monitoring line by regenerating 90 % of the signal at the REM location, thus extending the range. It is almost as if a new A1 or G1 was installed at this position, with added benefits:

  • REM has a low consumption, typically 10 W
  • No need for communication with the interrogator
  • All the elements comply with Telcordia norm: 25 years of MTBF
  • REMs can be chained to reach extreme range (example: with two REMs 3 x 70 km for the G1-R equivalent to 42 dB optical budget)

The FEBUS REM can also be adapted for subsea integration (form factor and thermal dissipation).


Typical distance between REM 40 - 80 km
Maximal number of REM per line 3
Maximum range per channel / Optical budget 200 km, 56 dB
Number of channels Adaptable
Sensor configuration Single ended
No need for Termination Unit

schema febus rem

Example of configuration with two REMs