Fiber Bragg Gratings

FBG Instruments

INFIBRA TECHNOLOGIES can offer a range of FBG interrogators based on the different technologies provided by its international partners. Listed below you can find the proprietary instruments only, click on the picture in a selected tab to read the specifications.


fbg hub unit miniatureFBG.HUB UNIT is an optical multiplexer which can be used in combination with FBG interrogators for the acquisition, log and communication of FBG-based sensors. Each of 4 input channels can be connected to a channel of a compatible FBG interrogator in order to expand the acquisition channel from 1 to 16. This capability allows the acquisition of 4 x 16 = 64 switched channels.
fbg hub unit
  • 64 scanning channels
  • Rackmount form factor
  • Different FBG interrogator compatibility
  • TCP/IP Modbus communication
  • On-board SD logging
  • Customizable switching time

Measurement and Processing:
 Wavelength Range  300 nm (1300-1600 nm)
 Number of Input Channels  4
 Number of Output Channels  64
 Insertion Loss  <1.7 dB (Typical 0.7 dB)
 Number of sensors  Depending on FBG interrogator
 Polarization dependent loss  < 0.15 dB
 Repeatability  < 0.01 dB
 Minimum switching time  < 10 ms (typical 5 ms)
 Durability  MEMS technology - no wear out
 Communication  TCP/IP Modbus
 Onboard Logging  External SD for logging
 Certifications  CE

Mechanical, Environmental and Electrical:
 Dimensions  19" standard RACK, 3U height, 84HP depth
 Weight  3 kg
 Operating Temperature  -10 to 50 °C (10-90% RH non condensating)
 Storage temperature  -20 to 85 °C
 Comms Interface  Ethernet
 Optical Connector  LC/APC
 Power supply  19 - 36 Vdc (typical 24 Vdc)

Donwload the Datasheet.


INFIBRA TECHNOLOGIES Srl is engaged in designing and manufacturing of next-generation fiber optic sensors systems, while also offering engineering services. Energy, Oil & Gas, Transportation and Civil Engineering are our target markets, with solutions even suitable for harsh environments. Monitoring of temperature, vibration, deformation, or other chemical-physical parameters through a single optical fiber are our typical applications and FBGs, Raman, Brillouin and Rayleigh are our technologies.

Acquistinretepa Logo


  Via Emilia 323/A, Pisa, 56121  -  VAT 02134410501
  +39 050 7917951

NOTE! This site uses cookies and similar technologies. If you do not change the browser settings, you agree.