Optical module

The invention provides an optical module, which comprises an optical receiving assembly, a microprocessor electrically connected with the optical receiving assembly, a laser driving chip electrically connected with the microprocessor and a laser emitting chip electrically connected with the laser driving 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 used for receiving the first low-frequency message and generating a first wavelength control signal or a second wavelength control signal according to the comparison between a wavelength parameter indicated by the first low-frequency message and a preset value; the laser emission chip is used for emitting an emission light signal; and the laser driving chip is used for receiving the first wavelength control signal and the second wavelength control signal, coarsely adjusting the wavelength of the emitted light signal according to the fi