SOA is an O-band semiconductor optical amplification card launched by GIGALIGHT. Its main function is to amplify the optical signal within the range of 1260~1360nm, with the maximum rate support of 160Gbp/s. It has characteristics such as stable output power, low output noise and low polarization dependent gain. The single-card supports the access to at most 4-channel independent optical signals. It’s suitable for the amplification for 40G or 100G small power signals in the construction of security system.