Accelight ACP2C-LR4 optical transceiver is designed for 100G Ethernet links over 10km single mode fiber. It is compliant with CFP MSA CFP2 Hardware Specification Rev. 1.0, CFP MSA Management Interface Specification Rev. 2.2, and OIF CEI-28G-VSR standards. The transmitter integrates 4 EMLs with center wavelength of 1295.96 nm, 1300.05nm, 1304.58nm and 1309.14 nm. The 4 optical signals are multiplexed into one single mode fiber. On the receive side, the four lanes of optical data streams are optically de-multiplexed and each data stream is recovered by a PIN photo-detector and trans-impedance amplifier. It has a built-in CDR, and a MDIO management interface based on the CFP MSA CFP2 Hardware Specification Rev. 1.0 and CFP MSA Management Interface Specification Rev. 2.2 requirements.