TY - GEN
T1 - Mechanically induced long period fiber gratings in Er3+ fiber for structural health monitoring
AU - Pulido-Navarro, M. G.
AU - Alvarez-Chavez, J. A.
AU - Ceballos-Herrera, D. E.
AU - Escamilla-Ambrosio, P. J.
PY - 2013
Y1 - 2013
N2 - This work presents preliminary results on wavelength sensitivity due to mechanically induced long period fiber grating (LPFG) on both standard single-mode and Er-doped fibers. The work presents and compares results for both types of fibers under different torsion conditions. In order to apply the torsion one of the fiber ends is fixed while torsion is applied on the other end. A LPFG whose period is 503μm is used to press on the fiber after the torsion, this will allow for micro curvatures to be formed on the fiber, which will in turn generate a periodical index perturbation on it. Here, it was noted that the rejection band shifts to shorter wavelengths for Er-doped fibers. It was detected that for torsion of 6 turns applied to 10cm doped fiber the wavelength peaks can shift up to 25nm, which is longer than similar results reported on standard fibers. Therefore, by using Er-doped fibers this technique will give more sensitive and accurate results on the real conditions of the structure under study. These results can be employed for sensing applications, especially for small to medium size structures, being these structures mechanical, civil or aeronautical. Theoretical calculations and simulations are employed for experimental results validation.
AB - This work presents preliminary results on wavelength sensitivity due to mechanically induced long period fiber grating (LPFG) on both standard single-mode and Er-doped fibers. The work presents and compares results for both types of fibers under different torsion conditions. In order to apply the torsion one of the fiber ends is fixed while torsion is applied on the other end. A LPFG whose period is 503μm is used to press on the fiber after the torsion, this will allow for micro curvatures to be formed on the fiber, which will in turn generate a periodical index perturbation on it. Here, it was noted that the rejection band shifts to shorter wavelengths for Er-doped fibers. It was detected that for torsion of 6 turns applied to 10cm doped fiber the wavelength peaks can shift up to 25nm, which is longer than similar results reported on standard fibers. Therefore, by using Er-doped fibers this technique will give more sensitive and accurate results on the real conditions of the structure under study. These results can be employed for sensing applications, especially for small to medium size structures, being these structures mechanical, civil or aeronautical. Theoretical calculations and simulations are employed for experimental results validation.
KW - Er-doped fiber
KW - Long period fiber grating
KW - fiber optic sensing
KW - mechanical induced LPFG
UR - http://www.scopus.com/inward/record.url?scp=84887861634&partnerID=8YFLogxK
U2 - 10.1117/12.2023153
DO - 10.1117/12.2023153
M3 - Contribución a la conferencia
AN - SCOPUS:84887861634
SN - 9780819497185
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Infrared Sensors, Devices, and Applications III
T2 - Infrared Sensors, Devices, and Applications III
Y2 - 26 August 2013 through 28 August 2013
ER -