400GBASE-DR4 QSFP112 1310nm 500m DOM APC MPO SMF Optical Transceiver Module
400GBASE-DR4 QSFP112 is designed for 400G Ethernet links over 500m of single-mode fiber. The module contains 4 parallel channels at a center wavelength of 1310nm, each operating at 106.25G. On the receiver path, 4 photodiodes and a 4-channel TIA array are used, along with PAM4 re-timers.