Optical signal module and communication device

The invention relates to an optical signal module and a communication device, the optical signal module comprises a base, a shell, a mounting bracket, an optical signal unit and a first filtering assembly, the shell is connected with the base, an optical window of the shell is used for receiving an external optical signal or transmitting the optical signal to the outside, the mounting bracket is mounted on the base, and the optical signal unit is mounted on the mounting bracket. The optical signal unit is used for installing a filter of the first filtering assembly, the optical signal unit at least comprises a first optical signal unit, a second optical signal unit and a third optical signal unit, each optical signal unit is used for transmitting or receiving corresponding optical signals, and the first filtering assembly is used for transmitting and transmitting the corresponding optical signals between the optical window and the optical signal unit. Through the design, a plurality of optical signal units ca