Laser diode control circuit with rectifier in feedback control loop

A laser diode control circuit with a rectifier in a feedback control loop is provided. The laser diode control circuit includes: a LD driver circuit for driving a laser diode; a direct current component remover circuit for generating a feedback signal based on a detected signal; a first conversion and filter circuit for generating a first filtered signal based on the feedback signal; a first rectifier for rectifying the first filtered signal to generate a first rectified signal; a reference signal generator for generating a reference signal; a second conversion and filter circuit for generating a second filtered signal based on the reference signal; a second rectifier for rectifying the second filtered signal to generate a second rectified signal; a rectified signals processing circuit forgenerating a processed signal based on the first and second rectified signals; and a comparator for generating a comparison signal based on the processed signal. 本发明提出一种反馈控制回路中含有整流器的激光二极管控制电路，包含：激光二极管驱动电路，可根据数据信号产生激光二极管的驱动信号