QSFP28 100G Tun. DWDM -8dBm ZR 0-70°C

AQC-78535 is a high-performance QSFP28 transceiver module for 100 Gigabit Ethernet DP-DQPSK modulated data links over two single mode fibres. The maximum reach is 120km (optionally extendable to 300km) without inline chromatic dispersion compensation. 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 QSFP28 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).