Fiber optic, photonic & electronic test & measurement
PhotonFirst

GTR FBG Interrogator

Single-channel, PIC-based FBG interrogator for compact quasi-distributed fibre optic sensing installations. Reads up to eight Fiber Bragg Grating sensors on one optical fibre.

GTR FBG Interrogator

Technical overview

The GTR is PhotonFirst's entry-level photonic-integrated-circuit interrogator. The manufacturer lists one optical channel carrying up to eight FBG sensors and a sampling frequency of 19.23 kHz. It is one of the two products supported by PhotonFirst's Gator Operator Software and the Public GTR API. No wavelength range, resolution or accuracy figures are published on the open website; the full datasheet sits behind a contact form.

Also supplied through Sensuron. The same instrument reaches us by more than one route; the specifications are the manufacturer's either way.

Features

  • 1 optical channel
  • 8 FBG sensors
  • 19.23 kHz sampling frequency
  • PIC (Photonic Integrated Circuit) based interrogation
  • Supported by Gator Operator Software and the Public GTR API

Specifications

Specifications
ParameterValue
Optical channels1 channel
FBG sensors8 sensors
Sampling frequency19.23 kHz
Software supportGator Operator Software (GOS) v5.0.1; Public GTR API v0.1.0
Source: https://www.photonfirst.com/fbg-interrogators · retrieved 2026-08-25
Source: https://www.photonfirst.com/software · retrieved 2026-08-25
Specifications are reproduced from the manufacturer's own published material on the date shown and are subject to change. Confirm at order.

Applications

  • Structural health monitoring
  • Load and strain testing
  • Temperature monitoring
  • Laboratory and prototype FBG sensing
Request the datasheet from the manufacturer

This link opens the manufacturer's request form, not a PDF — they do not publish this datasheet openly.

You may also like

Need help specifying this?

Our application engineers will confirm specifications with the manufacturer and quote for your configuration.

Request Info