Optical module and wavelength configuration method thereof

The invention provides an optical module, and the module comprises an optical transmitting assembly which is configured to be capable of transmitting a transmitting optical signal carrying a low-frequency message, and also being capable of transmitting a transmitting optical signal not carrying a low-frequency message; an optical receiving assembly which is configured to be capable of receiving an external receiving light signal; a MCU which is electrically connected with the optical transmitting assembly and the optical receiving assembly respectively, is configured to emit an instruction for changing the light wavelength, wherein the optical transmitting assembly changes the wavelength of the emitted light signal according to the instruction; the MCU is configured to be capable of transmitting wavelength messages, the wavelength messages are loaded into the transmitted optical signals in a low-frequency message mode, and the wavelength messages can indicate the wavelength of the transmitted optical signals