Fig. 1. Schematic diagrams of Talbot-VCSEL structure. (a) Imaging principle of Talbot effect; (b) array layout structure

Fig. 2. Bifurcation diagram of laser output power extremum varying with feedback coefficient

Fig. 3. Variation in correlation of array elements with feedback coefficient and optical coupling ratio. (a) Units 1 and 2; (b) units 1 and 3; (c) units 2 and 3

Fig. 4. Variation in coupling coefficient and optical coupling ratio of adjacent units with filling factor. (a) Coupling coefficient of the optical feedback for own unit kii and coupling coefficient of the optical injection for adjacent units kij; (b) optical coupling ratio of adjacent units

Fig. 5. Variation in PSL with feedback coefficient and optical coupling ratio. (a) Unit 1; (b) unit 2; (c) unit 3

Fig. 6. Time series, power spectra, and autocorrelation curves of chaotic output in unit 2 under different feedback coefficients when optical coupling ratio is 0.5. (a) Time series, (b) power spectrum, and (c) autocorrelation curve with feedback coefficient of 10 ns^-1; (d) time series, (e) power spectrum, and (f) autocorrelation curve with feedback coefficient of 20 ns^-1

Fig. 7. Overlap between feedback spots and laser arrays. (a) Different arrangement spacings; (b) different feedback cavity lengths

Fig. 8. Number of coupling channels corresponding to different filling factors

Fig. 9. Chaotic correlations between all channels under different filling factors. (a) 0.1; (b) 0.2; (c) 0.3; (d) 0.4; (e) 0.5; (f) 0.6; (g) 0.7; (h) 0.8; (i) 0.9; (j) 1.0