Melle Hernández, SoniaGómez Calderón, ÓscarEgatz-Gómez, AnaCabrera Granado, EduardoCarreño Sánchez, FernandoSalavagione, H. J.Antón Revilla, Miguel Ángel2023-06-192023-06-192014-04-080740-322410.1364/JOSAB.31.001018https://hdl.handle.net/20.500.14352/34709Este documento es la versión postprint del artículo. © 2014 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.We analyze the phase shift induced in an amplitude-modulated laser beam propagating through a water dispersion of graphene oxide sheets in a fiber-to-fiber U-bench. This phase shift arises from the thermally induced nonlinear refraction in the sample. The system exhibits strong optical limiting performance for weak continuous-wave signals. A theoretical model including beam propagation and thermal lens focal length oscillation reproduces the experimental findings.engjournal articlehttp://dx.doi.org/10.1364/JOSAB.31.001018https://www.osapublishing.org/josab/abstract.cfm?uri=josab-31-5-1018open access535.57535.374Nonlinear opticsfibersThermal lensingÓptica (Física)2209.19 Óptica Física