Optical strain gauge extremely stable in thin plate

Electronics Mechanics
Mikroniek 3 2008 by Pim Kat, Harrie Kessels, Jan-Chris van Osnabrugge, Piet van Rens and Hans van Eerden 30 December 2008

Taking measurements using an optical fibre (fibre optic sensing) offers unprecedented possibilities when compared to conventional electronic measuring. This is mainly due to the wave characteristic of light: think of aspects such as resolution and multiplexing, with a good example being the ‘optical strain gauge’. TNO Science and Industry has developed the principle for a high-frequency multi-channel measuring system based on Fibre Bragg Grating. This system can measure any quantity that can be translated into thermal or mechanical strain on the fibre. Technobis has now developed it into a product that is ready for the market, the Fibre Bragg Grating Interrogator. The greatest challenge, however, was to make the system extremely stable.


References

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