Butterfly laser drive circuit

The utility model provides a butterfly laser drive circuit, and relates to the technical field of laser communication. The utility model provides a butterfly laser drive circuit, which comprises a single chip microcomputer, a digital-to-analog conversion unit, a constant current circuit unit, a TEC control unit, a transimpedance amplification unit and an analog-to-digital conversion unit. The digital-to-analog conversion unit comprises two digital-to-analog converters and a voltage reference chip; a TEC control unit, wherein the TEC control unit comprises a TEC control chip; the analog-to-digital conversion unit comprises an analog-to-digital converter; the constant current circuit unit comprises a dual-channel following operational amplifier, a triode and a precise sampling resistor; according to the utility model, the current and temperature of the butterfly-shaped laser are controlled and adjusted by a program, the efficiency of adjusting the optical power is effectively improved, and the optical power can