40km Long Reach PAM4 50G QSFP28 Single Mode Optical Transceiver for 5G Fronthaul

The QSFP28 50G optical transceiver is a single-lambda PAM4 module engineered for 40km transmission over standard single-mode fiber at a 1311nm wavelength. By pairing an electro-absorption modulated laser (EML) transmitter with an avalanche photodiode (APD) receiver, this QSFP28 50G optical transceiver keeps a clean 50 Gbps signal across metro and long-haul spans where conventional duplex 25G NRZ modules simply cannot reach. Built to the 50GBASE-ER, QSFP28 MSA and SFF-8636