Shear stress sensing with Bragg grating-based sensors in microstructured optical fibers

We demonstrate shear stress sensing with a Bragg grating-based microstructured optical fiber sensor embedded in a single lap adhesive joint. We achieved an unprecedented shear stress sensitivity of 59.8 pm/MPa when the joint is loaded in tension. This corresponds to a shear strain sensitivity of 0.0...

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Bibliographic Details
Published inOptics express Vol. 21; no. 17; pp. 20404 - 20416
Main Authors Sulejmani, Sanne, Sonnenfeld, Camille, Geernaert, Thomas, Luyckx, Geert, Van Hemelrijck, Danny, Mergo, Pawel, Urbanczyk, Waclaw, Chah, Karima, Caucheteur, Christophe, Mégret, Patrice, Thienpont, Hugo, Berghmans, Francis
Format Journal Article
LanguageEnglish
Published United States 26.08.2013
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Summary:We demonstrate shear stress sensing with a Bragg grating-based microstructured optical fiber sensor embedded in a single lap adhesive joint. We achieved an unprecedented shear stress sensitivity of 59.8 pm/MPa when the joint is loaded in tension. This corresponds to a shear strain sensitivity of 0.01 pm/µε. We verified these results with 2D and 3D finite element modeling. A comparative FEM study with conventional highly birefringent side-hole and bow-tie fibers shows that our dedicated fiber design yields a fourfold sensitivity improvement.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.21.020404