Absorbance response of graphene oxide coated on tapered multimode optical fiber towards liquid ethanolS. H. Girei, A. A. Shabaneh, H. M. Lim, N. M. Huang, M. A. Mahdi and M. H. YaacobJ. Eur. Opt. Soc.-Rapid Publ., 10 (2015) 15019DOI: https://doi.org/10.2971/jeos.2015.15019