带有双路TEC温控的功率可调DFB激光器驱动电源设计与实现

Design and Implementation of A DFB Laser Drive with Dual TEC Module

摘要:

DFB激光器泵浦对环境温度十分敏感，为减小环境温度及泵浦发热温度变化对激光器输出造成的影响，提出了一种带有双路TEC温控的功率可调DFB激光器驱动电源。该电源以STM32为控制核心，对激光器光源和晶体内部温度采集与控制的双路温控系统进行研究，使激光器工作温度恒定。通过压控恒流源，连续调节DFB激光器功率。试验结果表明，该驱动电源相比传统方式，体积小、电流精度高、温度稳定性好，应用前景广阔。

Abstract:

The DFB Laser is very sensitive to the ambient temperature. In order to reduce the influence if the ambient temperature and the change of the pump heating temperature on the output of the laser, a power adjustable DFB laser supply with dual circuit TEC temperature control is proposed. The power supply takes STM32 as the control core, studies the two way temperature acquisition and control in crystal and Laser, and makes the laser working temperature constant. The power of DFB laser is continuously regulated by voltage controlled constant current source. The test results show that the driving power has the advantages of small volume, high current accuracy, good temperature stability and wide application prospect compared with the traditional way.