High resolution static strain measurement using an in-fibre-Bragg-grating-based Fabry Perot sensor

Y. J. Rao

doi:10.1117/12.2302308

9 November 2000 High resolution static strain measurement using an in-fibre-Bragg-grating-based Fabry Perot sensor

Y. J. Rao

Author Affiliations +

Proceedings Volume 4185, Fourteenth International Conference on Optical Fiber Sensors; 41854L (2000) https://doi.org/10.1117/12.2302308
Event: Fourteenth International Conference on Optical Fiber Sensors, 2000, Venice, Italy

Abstract

A novel method to achieve both large dynamic range and high resolution for static strain measurement is proposed and demonstrated. This method is based on the combination of two in fibre Bragg gratings (FBG) and an all-fibre Fabry-Perot interferometric sensor (FFPI) formed by the two FBGs. The FFPI is used to obtain high-resolution strain measurement via phase detection of the interferometric signal whilst the wavelength-shift of the two FBGs forming the FFPI is used for determination of the fringe number of the interferometric signal.

Citation Download Citation

Y. J. Rao "High resolution static strain measurement using an in-fibre-Bragg-grating-based Fabry Perot sensor", Proc. SPIE 4185, Fourteenth International Conference on Optical Fiber Sensors, 41854L (9 November 2000); https://doi.org/10.1117/12.2302308

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