SFP or small form-factor pluggable or Mini-GBIC (Gigabit Interface Converter) is a compact, hot-pluggable transceiver used for both telecommunication and data communications applications. They are available in the following wavelengths: 850nm, 1310nm, 1550nm.
Simple Technology provide SFP Transceivers for all well known brand names. Cisco, HP, Finisar, Brocade, IBM and more....