Optical module

The invention provides an optical module, which comprises an optical receiving assembly, a microprocessor, a laser driving chip and a laser emitting chip, and is characterized in that the optical receiving assembly is used for receiving a receiving optical signal carrying a first low-frequency message; the microprocessor is electrically connected with the light receiving assembly and is used for receiving the first low-frequency message and sending a power control signal according to the first low-frequency message; the laser driving chip is electrically connected with the microprocessor and is used for receiving the power control signal and adjusting power supply to the laser emission chip according to the power control signal so as to adjust the emission power value of the laser emission chip to a target value; the laser emission chip is electrically connected with the laser driving chip and is used for emitting an emission light signal. Through signal transmission between the optical modules at the two end