Item Spotlights
Arista QDD-400G-ZRP Compatible 100-400GbE DCO QSFP-DD DWDM Tunable Coherent ≤40km Unamplified DDM/DOM Duplex LC SMF Optical Transceiver Module (SMF, Coherent, LC, DOM, Open ZR+)
NADDOD Arista QDD-400G-ZRP Compatible QSFP-DD 400G ZR+ is a C-Band optical frequency tunable coherent optical transceiver that combines 7nm coherent DSP ASIC functionality with best-in-class ultra-narrow line-width tunable lasers, high-speed modulators, and high-responsivity coherent receivers. It delivers high performance using 100G DP-QPSK, 200G DP-QPSK, 300G DP-8QAM, and 400G DP-16QAM modulation formats, making it ideal for 100G/200G long-haul and 300G/400G Metro IP-over-DWDM networks without the need for inline chromatic dispersion compensation.
The QDD-400G-ZR+ is suitable for 400G Ethernet data center solutions over distances up to 120 km, supporting DCI edge and regional interconnections. It can be deployed in a variety of network topologies, including point-to-point, star, and ring networks.

The QDD-400G-ZR+ boasts remarkable advantages across four dimensions — transmission distance, deployment flexibility, adaptive modulation, and reliability — precisely meeting the application requirements of cross-region DCI and backbone networks.
The QDD-400G-ZR+ reuses existing optical fibers to boost bandwidth, eliminating the need for re-laying and avoiding high cabling costs; its long-haul transmission reduces repeater/amplifier deployment, thereby simplifying network architecture while cutting capital and operational expenses.