GIGALIGHT SFP+ XG-PON&GPON OLT Class D 20km optical transceiver module is a combination of XG-PON OLT and GPON OLT optical modules, adopts SFP+ package, and complies with ITU-T G.987.2 and G.984.2 standards. The module can support XG-PON and GPON transmission on a single fiber. The XG-PON function supports 9.953Gbps continuous mode transmission of 1577nm EML laser and 2.488Gbps burst mode reception of 1270nm APD/TIA. The GPON function supports 2.488Gbps continuous mode transmission of 1490nm DML laser and 1.244Gbps burst mode reception of 1310nm APD/TIA.