CWDM X2 40km Transceiver,The 10G CWDM X2 transceivers are high performance, serial optical transponder module for high-speed, 10Gbit/s data transmission applications. The module is fully compliant to IEEE 802.3ae standard for Ethernet, making it ideally suited for 10GbE datacom (rack to-rack, client interconnection) applications. The transponder module comprises a transmitter with a directly modulated CWDM EML laser, a receiver with a APD photodiode, a XAUI-Attachment Interface, an integrated Coder /Decoder and multiplexer / de-multiplexer (SERDES: Serializer/Deserializer).