Reliable fiber bragg gratings for your sensing application

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.


Fiber bragg gratins for sensing applications: Our fbg expertise focused on one mission

Fiber bragg gratings designed for Strain and temperature measurement

Fiber Bragg Gratings written inside optical fibers provide high resolution and robustness ideal for temperature or mechanical strain sensing applications. In the fields of transport, aviation, and aerospace to civil engineering and oil & gas, more and more real-time safety and function monitoring is necessary. This technology can be to measure the strain in a concrete structure, the movement of an aircraft wing, the detection of leaks in pipelines…

ITF’s highly controlled FBG writing process yield precise central wavelengths, bandwidth, grating position and grating length for the best measurement accuracy and sensitivity.

Our specifications are also highly customizable. If you need a FBG with particular optical characteristics or written on a very specific or even custom optical fiber, we can do it. Our standard configurations include precise peak wavelength fiber Bragg gratings written on specialized acrylate or polyimide coated fibers for high mechanical strength.

Also, we have a standard line of off the shelf single FBG units available right away for your evaluation and testing needs, at high volume pricing for low volume orders. They feature high reflectivity and a narrow bandwidth on polyimide coated single mode fiber. See our datasheet for more details.

our fbg sensors: robust and precise for localised sensing

Is your sensor system robust enough? we guarantee high mechanical strength.

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
- Medical

Data Sheets

FBG Sensors
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400 boul. Montpellier
Montreal, Quebec
H4N 2G7 Canada

Tel: (514) 748-4848
Fax: (514) 744-2080

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