QSFP market evolves, first products emerge

摘要

The quad small-form-factor pluggable (QSFP) is a full-duplex optical module with four independent transmit and receive channels. It is designed to replace four single-channel SFPs in a package only about 30% larger than the standard SFP. The device supports data rates of 100 Mbits/sec to 10 Gbits/sec and, like its single-channel counterpart, includes digital diagnostic capabilities to monitor link performance. Even though the first commercial devices have emerged only in the last nine months or so, the QSFP already boasts an interesting history.