A single mode SFP transceiver is a hot-swappable optical module designed to transmit and receive data over single mode fiber (SMF). It is commonly used in Ethernet and fiber optic networking equipment such as switches, routers, and media converters. Think of it as the “translator” for your network equipment, converting electrical signals into optical signals. SFP (Small Form-factor Pluggable) modules are standardized network transceivers that support a range of data rates (1G, 10G, 25G) and fiber types. Long-distance variants, typically referred to as LX, EX, ZX, or ER/LR SFPs, are engineered with higher optical power budgets and longer wavelength. Single-mode SFP and multimode SFP are the two main types of hot-pluggable optical transceivers used in fiber optic networks. SFP covers 1G-100G in compact form factors. These modules also come in SMF/MMF variants, but they are not part of the "SFP.
