Title :
Transversal Load Sensing With Fiber Bragg Gratings in Microstructured Optical Fibers
Author :
Geernaert, Thomas ; Luyckx, Geert ; Voet, Eli ; Nasilowski, Tomasz ; Chah, Karima ; Becker, Martin ; Bartelt, Hartmut ; Urbanczyk, Waclaw ; Wojcik, Jan ; De Waele, Wim ; Degrieck, Joris ; Terryn, Herman ; Berghmans, Francis ; Thienpont, Hugo
Author_Institution :
Vrije Univ. Brussel, Brussels
Abstract :
We present fiber Bragg grating based transversal load sensing with a highly birefringent microstructured optical fiber. For the bare fiber, the change of the Bragg peak separation under a transverse line load was simulated with a finite-element model and experimentally verified. We also show that microstructured optical fibers with fiber Bragg gratings can be successfully embedded in a carbon fiber reinforced composite material. The linear dependence of the Bragg peak separation to a transversal stress in the composite sample was measured to be 15.3 pm/MPa.
Keywords :
Bragg gratings; birefringence; fibre optic sensors; finite element analysis; stress measurement; birefringent microstructured optical fiber; carbon fiber reinforced composite material; fiber Bragg gratings; finite-element model; microstructured optical fibers; transversal load sensing; transverse line load; Birefringence; Bragg gratings; Capacitive sensors; Composite materials; Fiber gratings; Finite element methods; Monitoring; Optical fibers; Photonic crystal fibers; Stress measurement; Bragg gratings; microstructured fiber; photonic crystal fiber; structural health monitoring;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2007915
