Design of laser diode driver with constant current and temperature control system

Ming-cai Wang; Kai-yong Yang; Zhi-guo Wang; Zhen-fang Fan

doi:10.1117/12.2285055

24 October 2017 Design of laser diode driver with constant current and temperature control system

Ming-cai Wang, Kai-yong Yang, Zhi-guo Wang, Zhen-fang Fan

Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 1045730 (2017) https://doi.org/10.1117/12.2285055
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

A laser Diode (LD) driver with constant current and temperature control system is designed according to the LD working characteristics. We deeply researched the protection circuit and temperature control circuit based on thermos-electric cooler(TEC) cooling circuit and PID algorithm. The driver could realize constant current output and achieve stable temperature control of LD. Real-time feedback control method was adopted in the temperature control system to make LD work on its best temperature point. The output power variety and output wavelength shift of LD caused by current and temperature instability were decreased. Furthermore, the driving current and working temperature is adjustable according to specific requirements. The experiment result showed that the developed LD driver meets the characteristics of LD.

Citation Download Citation

Ming-cai Wang, Kai-yong Yang, Zhi-guo Wang, and Zhen-fang Fan "Design of laser diode driver with constant current and temperature control system", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 1045730 (24 October 2017); https://doi.org/10.1117/12.2285055

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