Recovering a fiber Bragg grating axial strain distribution from its reflection spectrum

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URI: http://hdl.handle.net/10902/2624
ISSN: 1539-4794
ISSN: 0146-9592
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Autoría
Rodríguez Cobo, LuisAutoridad Unican; Cobo García, AdolfoAutoridad Unican; López Higuera, José MiguelAutoridad Unican
Fecha
2013-07-01
Derechos
© 2013 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.38.002327. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Publicado en
Optics Letters, 2013, 38(13), 2327-2329
Editorial
The Optical Society (OSA)
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Resumen/Abstract
A processing scheme able to obtain any arbitrary intragrating strain distribution of a fiber Bragg grating (FBG) is proposed and demonstrated. The processing method employs just the intensity of the FBG reflection spectrum to obtain its deformation profile by combining a geometrical processing scheme with the particle swarm optimization technique. The technique has been evaluated using several spectra generated from very heterogeneous strain distributions and with a real spectrum obtained from a 5 mm length FBG under an asymmetric perturbation. The achieved results exhibit a good spatial resolution (Δ≈0.5 mm) and repeatability.
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