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

Sanne Sulejmani, Camille Sonnenfeld, Thomas Geernaert, G. Luyckx, Danny Van Hemelrijck, P. Mergo, W. Urbanczyk, K. Chah, C. Caucheteur, P. Megret, Hugo Thienpont, Francis Berghmans

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

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/mu epsilon. 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. (C) 2013 Optical Society of America
Original languageEnglish
Pages (from-to)20404-20416
JournalOpt. Express
Volume21
Issue number17
Publication statusPublished - 26 Aug 2013

Keywords

  • PHOTONIC-CRYSTAL FIBERS; ADHESIVELY BONDED JOINTS
  • TRANSVERSE LOAD; STRAIN; TEMPERATURE
  • SENSITIVITY; PRESSURE; COMPOSITE

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