ETU-Link 100G CFP4 LR4 optical Transceiver integrates receiver and transmitter path on one module. In
the transmit side, four lanes of serial data streams are recovered, retimed, and passed to four laser
drivers. The laser drivers control four EMLs (Electric-absorption Modulated Lasers) with center
wavelength of 1296 nm, 1300nm, 1305nm and 1309 nm. The optical signals are multiplexed to a single
–mode fiber through an industry standard LC connector. In the receive side, the four lanes of optical data
streams are optically de-multiplexed by the integrated optical de-multiplexer. Each data stream is
recovered by a PIN photo-detector and trans-impedance amplifier, retimed. This module features a
hot-pluggable electrical interface, low power consumption and MDIO management interface.
