Commonly used in the optical module of the Ethernet switch

SFP, GBIC, XFP, XENPAK. Their full name in English, Chinese name is not used, can be as simple as understanding the
SFP: Small Form-factor Pluggable transceiver, small form-factor pluggable transceiver
GBIC: GigaBit Interface Converter, Gigabit Ethernet interface converter
XFP: 10-Gigabit small Form-factor Pluggable transceiver Gigabit Ethernet interface small form-factor pluggable transceiver
XENPAK: a collection of 10-Gigabit EtherNet the Transceiver PAcKage Gigabit Ethernet interface transceiver package
In accordance with the rate: Ethernet applications 100Base (Fast) 1000Base (Gigabit) 10GE SDH applications 155M, 622M, 2.5G, 10G
According to the package points: 1 × 9, SFF, SFP, GBIC, XENPAK, XFP, package see
1 × 9 package - welding optical module, the general speed is not higher than gigabit, multi-SC interface
SFF package - welding small package optical modules, general speed is not higher than gigabit, multi-LC interface
GBIC Package - hot-swappable Gigabit Interface optical module, SC connector
SFP package - hot-plug small package module, the maximum data rate of up to 4G, the use of LC interface
XENPAK package - applications in the Gigabit Ethernet SC interface
XFP package - 10G optical modules that can be used in Gigabit Ethernet, SONET and other systems.
the use of LC interface To sub: LED, VCSEL, FP LD, DFB L
in accordance with the type of laser Points in accordance with the emission wavelength: 850 nm, 1310nm, 1550nm, etc. Use: non-hot-plug (1 × 9, SFF), hot-swappable (GBIC, SFP, XENPAK, XFP)