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Proceedings Paper

Enhanced axial strain sensitivity in plasmonic tilted fiber Bragg gratings sensors
Author(s): V. Voisin; C. Caucheteur; P. Mégret; J. Albert
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Paper Abstract

This paper experimentally analyses the axial strain sensitivity of gold-coated tilted fiber Bragg gratings immersed in liquid. For the polarization mode P (polarization parallel to the tilt plane), a strong attenuation of some cladding mode resonances appears in the transmitted spectrum due to the coupling with the Plasmon wave. When axially straining the grating, we report a unique behavior for the cladding mode resonance that presents the strongest attenuation. It presents an axial strain sensitivity (1.33 pm/με) higher than the Bragg wavelength (1.28 pm/με) and much higher than neighboring cladding modes (1.16 to 1.22 pm/με), meaning that differential strain measurements can be achieved with such a sensing platform.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214A (17 October 2012); doi: 10.1117/12.970404
Show Author Affiliations
V. Voisin, Univ. of Mons (Belgium)
C. Caucheteur, Univ. of Mons (Belgium)
P. Mégret, Univ. of Mons (Belgium)
J. Albert, Carleton Univ. (Canada)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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