Mao Ye, Ensi Du, Qiuwei Wang, Yiqiang Zhao. High-precision temperature control system design for laser diode[J]. Infrared and Laser Engineering, 2024, 53(4): 20230713
- Infrared and Laser Engineering
- Vol. 53, Issue 4, 20230713 (2024)
Fig. 1. The overall architecture of the digital-analog hybrid temperature control system
Fig. 2. Temperature measurement circuit
Fig. 3. Implementation of variable zero temperature control
Fig. 4. Iterative and multi-objective optimization implementation methods
Fig. 5. Accuracy of the variable zero point temperature control method at different iterations
Fig. 6. Control flow chart of AWPID
Fig. 7. H-BUCK drive circuit with T-capacitor network
Fig. 8. (a) Overall physical diagram of the overall architecture of the temperature control system; (b) Schematic diagram of a LD package; (c) Schematic diagram of the integrated device inside the LD package
Fig. 9. FPGA resource usage
Fig. 10. Temperature control system temperature control function test
Fig. 11. Comparison of different PID controls
Fig. 12. The architecture of the level-2 TEC temperature control system
Fig. 13. (a) Turn on LD stability testing; (b) Local enlargement of stability test results
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Table 1. Common temperature sensor performance
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Table 2. Summary of passive heat dissipation power under different set temperatures
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Table 3. Temperature control function test results
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Table 4. Accuracy testing and comparison with single zero point accuracy
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