Multi-mode optical module applied to low-temperature environment

The utility model relates to the technical field of optical modules, in particular to a multimode optical module applied to a low-temperature environment, which comprises a VCSEL (Vertical Cavity Surface Emitting Laser) assembly, a heating resistor and a driving circuit, the heating resistors are arranged on the two sides of the VCSEL assembly, and the VCSEL assembly is connected with the driving circuit; the heating resistor is connected with the switching device, and the switching device is used for controlling the conduction state and the conduction time of a branch where the heating resistor is located. According to the utility model, through the heating resistors arranged at the two sides of the VCSEL assembly, temperature compensation can be provided when the working environment temperature of the VCSEL assembly is lower than 25 DEG C; through a switching device connected with a heating resistor, when the environment temperature is lower than 25 DEG C, the switching device conducts a branch where the he