Fig. 1. Overall block diagram

Fig. 2. Schematic diagram of automatic current control module

Fig. 3. Loop model of automatic current control module

Fig. 4. First-order manual analysis of LOOP#0

Fig. 5. Tina-TI simulation diagram

Fig. 6. LOOP#0 simulation results

Fig. 7. ACC module anti-interference ability test simulation

Fig. 8. ACC module after the introduction of noise suppression network responsiveness test simulation

Fig. 9. Software block diagram

Fig. 10. ACC module anti-interference ability test

Fig. 11. Frequency control linearity and accuracy test

Fig. 12. Diagram of experimental device

Fig. 13. Drive current stability test

Fig. 14. Control linearity and precision test of laser output power