When developing a strain or temperature apparatus based on Fiber Bragg Gratings, you need accurate optical specifications, with the spectrum and grating length that’s adapted to your application. At the same time, mechanical resistance and long-term reliability are of high importance to achieve precise measurements in harsh environments. Our proven FBG writing process and our vast experience in this type of technology enables us to provide these features at low cost on a wide variety of fibers, whether acrylate or polyimide coated.
Our FBG writing process can produce very high strength gratings, with up to 400 kpsi mechanical resistance on acrylate coated fibers and 300 kpsi for polyimide coated fibers.
In terms of optical characteristics, both very low or very high reflectivity values are possible, with a wide range of central wavelengths and bandwidths available, to match the spectral shape you need.
We can work with standard, bend-insensitive or high-temperature acrylate and polyimide coated fibers, with 125um or 80um diameters, recoating them right after the FBG writing step for optimal process stability and reliability. If necessary, non-recoated FBGs are also available. The single mode fibers we use will be compatible with different type of interrogator systems for measurement and analysis.
All these features mean that ITF’s FBG sensors are ideal when in use in real-life applications. The data acquired by an optical interrogator will be accurate, repeatable and trustworthy.
Examples of FBG sensing applications:
- Strain sensing
- Temperature sensing
- Acoustic sensing
- Pressure sensing