Common optical module package modes include SFP, XFP, QSFP, CFP, etc.
SFP (Small Form-factor Pluggable) is a compact, pluggable transceiver module standard for telecom and data communication applications supporting up to 10 Gbps transmission rates.
XFP (10 Gigabit Small Form Factor Pluggable) is a 10G-rate, small pluggable transceiver module standard that supports multiple communication protocols such as 10G Ethernet, 10G Fibre Channel, and SONETOC-192. better power characteristics than other 10Gbps transceivers.
QSFP (Quad Small Form-factor Pluggable) is a compact, pluggable transceiver standard used primarily for high-speed data communications applications. According to the speed, QSFP can be divided into 4×10G QSFP+, 4×25G QSFP28, 8×25G QSFP28-DD optical modules and so on. Currently QSFP28 is widely used in data centers around the world.
CFP (Centum gigabits Form Pluggable) is based on standardized dense wavelength division optical communication module, transmission rate can reach 100-400Gbps. the size of CFP module is larger than SFP/XFP/QSFP, generally used for long distance transmission such as metro network.
