QSFP-DD 400G Tun. DWDM 0dBm ZR 0-70°C

AQE-78205 is a high-performance QSFP-DD transceiver module for 400 Gigabit Ethernet DP-16QAM modulated data links over two single mode fibres. The maximum reach is 120km (dispersion limited). The narrow linewidth tunable laser is shared between the transmitter and receiver sections (LO). A tapped monitor diode is used to control the optical output power. The transceiver is compliant with the QSFP-DD Multisource Agreement (MSA) and hot pluggable.

The receiver module is performing the coherent intradyne reception and O/E conversion of the incoming optical signal after being mixed with a local optical oscillator. Four pairs of balanced photo detectors perform quadratic detection and produce I and Q components of the two orthogonal polarizations (H and V).