Measurements in Harsh Environments Is Made Easy With FBGS Optical Fiber

Jena, (PresseBox) - Measurement of strain or temperature in harsh environments often requires specialist equipment, preparations or processes, with the most common environmental challenges coming from:

- Very low or high temperature
- Radioactive environments
- Environments subject to high EMI
- Applications subject to high fatigue
- Measurements over complex forms or large areas
- Multiple sensing points

Traditional electric technologies can sometimes only be used once sophisticated and expensive barriers, shielding methods or other protection is in place. As such it is rewarding to know that there is a new technology that can be used to address all the above challenging applications.

FBGS uses draw tower technology to manufacture their fiber optic grating sensors. This results in a product that is not only mechanically stronger than traditional Fiber Bragg Gratings (>5% strain) making manual handling easier, but due to the unique composition of the glass it can be mounted on intricate structures requiring twists and turns not normally associated with optical fiber based measurement systems.

Furthermore, multiplexing many sensors on a single fiber is possible, thus reducing both the complexity and weight of the installation. As the fiber is immune to the effects of EMI, the range of possible applications where electric sensors are not suitable is vast. It has even been proven to work whilst bombarded with gamma and proton radiation and can operate effectively in temperatures from cryogenic to 200degC.

Perhaps most importantly and unlike electric strain gauged sensors, optical fiber based sensors do not require a recalibration once installed. It is possible to return to them after weeks, months or years and simply plug in an instrument to read the relative change of strain since the last visit.

Through the combination of our unique draw tower manufacturing process and the special coating material supplied exclusively by the Fraunhofer Institute for Silicate Research, FBGS optical fiber is highly suited to industrial sensing applications. The opportunities for manufacturers of sensors and transducers in industries as diverse as medical, composite, metal processing, oil & gas, weighing and wind turbines are now starting to take advantage of this.

FBGS Technologies GmbH

FBGS is a Belgium and Germany based developer and manufacturer of high strength FBG sensors using draw tower technology, where the grating array is written during the drawing process of the fiber. This automated process results in very high quality low cost Fiber Bragg Gratings with unique characteristics. These are suitable for both standard and bespoke sensing solutions including applications within aerospace, oil & gas, renewable energy, process, composite & medical industries.

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