Figure 3
Fluorescence of the GO films coated on the core surface of SCF pieces.
(a) Fluorescence spectra of the four fibre pieces with or without GO films incorporated. The grating used was 600 g/mm and integration was 1 s. The two power values in the legend are the input and output power of the fluorescence excitation laser at 407 nm wavelength and indicate the fibre loss. For the fibre with the GO coated on the core using laser irradiation, the detected fluorescence became narrower and stronger. (b) For the fibres with GO coated using laser irradition, they show blue shifted fluorescence with increased fibre additional loss.
