Two-in-one amplifier board can realize the amplification of optical signals in the 1300nm window, which is compatible with 100G/10G/1GE and other different data rates. The first stage of amplification and the second stage of splitter are integrated on a board, and the output port is optional for 1 to 4 and 1 to 8.   It can be used in information security systems or data transmission systems and other application scenarios.