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. 2020 Sep 16;9:163. doi: 10.1038/s41377-020-00402-8

Fig. 5. Full-duplex characteristics of the bifunctional fibre LiFi.

Fig. 5

a Illustration of the light intensity-related data transmission process using the perovskite fibre as the light source. Top, EL spectrum and images of the modulated EL fibre under 7 V and 7.4 V; middle, voltage signals applied on the fibre; and bottom, modulated fibre luminous signals acquired by a photodiode module. b Eye diagram versus data rate at 50 kb s−1 showing a clear open eye. c Square-wave signals received from the perovskite fibre under illumination by a 10 kHz LD. d Superimposed signals of the light-emitting/detecting bifunctional perovskite fibre when operating as a PD and an LED simultaneously.