ETU-Link 400G QSFP-DD optical transceivers encompass a diverse range of series, including SR8, DR4, FR4, LR4, ER8, and ZR8. These optical modules represent the pinnacle of high-speed transmission technology, finding widespread application in high-performance data centers, communication networks, large-scale computing, and cloud computing environments.
QSFP-DD: quad small form factor pluggable-double density. A QSFP-DD optical module is a high-speed pluggable optical module defined by QSFP-DD MSA.