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

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 (A 0.5 mm) and repeatability.

 Autoría: Rodriguez-Cobo L., Cobo A., Lopez-Higuera J.,

 Fuente: Optics Letters, 2013, 38(13), 2327-2329

 Editorial: The Optical Society (OSA)

 Fecha de publicación: 01/07/2013

 Nº de páginas: 3

 Tipo de publicación: Artículo de Revista

 DOI: 10.1364/OL.38.002327

 ISSN: 0146-9592,1539-4794,1071-2763

 Proyecto español: TEC2010- 20224-C02-02

 Url de la publicación: https://doi.org/10.1364/OL.38.002327