FBG Interrogators

PhotonFirst has a broad range of FBG interrogation systems and is more than happy to consult which one is best suited for you. Please find below the main systems that are currently available.


FBG Interrogator 

The GTR features new and innovative FBG sensing functionality, based on integrated photonics. The platform is a miniature, out-of-the-box system platform supporting optical chipsets for a wide range of applications and environments. The basic GTR device is a single channel FBG interrogator that features 1pm precision, highspeed sampling and easy integration to your applications.


  • Small size, low weight, and low power consumption
  • Available for OEM integration
  Download Datasheet 
GTR Product

Special features

  • Small, reliable, and high performance
  • 1 optical channel, 8 FBG sensors
  • 19,23 kHz sampling rate


multichannel FBG interrogator

The SGTR demonstrates great versatility, providing fast channel multiplexing, high resolution sensing and high sampling speeds per channel. With its unique set of features, its reduced size, weight, and power specifications, the SGTR provides an excellent FBG interrogator solution.


  • Suitable for sensing applications in all markets
  • Small size, low weight, and low power consumption
  • Compliant to PhotonFirst modular technology platform
  Download Datasheet 
SGTR Product

Special features

  • 8 optical channels
  • Scan rate over all channels 30 Hz, maximum sampling frequency (one channel) 19,23 kHz


Multichannel FBG Interrogator for ultra-high stability measurements 

The MIP3 is a high-performance interrogator for Fiber Bragg Grating (FBG) sensors offering ultra-high stability. It provides fast channel multiplexing and high sampling speed per channel, making it ideal for a variety of sensing applications. The MIP3 automatically converts 
measurement data into peak wavelengths, which can be directly transferred to the relevant measurand data by the user.


  • Suitable for a variety of FBG based sensing applications

  • Ultra-high wavelength reproducibility and accuracy enable precise measurements and asset monitoring over a long period of time.

  • Enabling remote condition monitoring of advanced assets with real-time data logging.

  • Next generation smart sensing technology based on a Photonic Integrated Circuit (PIC) 

  Download Datasheet 
MIP3 Product

Special features

  • High stability with < 4 pm wavelength reproducibility
  • Up to 7 channels with 8 FBG sensors each
  • Scan rate over all channels 100 Hz, maximum sampling frequency (one channel) 19,23 kHz
  • High wavelength resolution of < 1pm/bit (typical 0,275 pm/bit)
  • Measurement data transferred to peak wavelength values by onboard processing
  • Ethernet (TCP) data interface 
PhotonFirst team

Want more info? 

See how PhotonFirst can help you