Figure 11.

(a) The forward and reverse nonlinear responses of 2D Te/SnS₂ nanocrystalline photonic diodes. (b) Results of non-reciprocal propagation of light. (c) Schematic diagram of all-optical modulation structure. (d) Modulation of pump light (red light) to detect light (green light). (e) With the change of the light intensity of the pump, the change of the number of optical diffraction rings is detected [266]. Copyright 2019 Wiley-VCH Verlag. (f) Schematic of the mode-locking fiber laser. (g) Radio spectrum [265]. Copyright 2019 The Royal Society of Chemistry.