1000BaseLX, also known as 1000Base-LX, is a specification for Gigabit Ethernet over fiber optic cabling as defined in IEEE 802.3z. LX stands for long wavelength and 1000Base-LX uses long wavelength laser (1310nm) over multimode and single-mode fiber as opposed to 1000Base-SX, which uses short wavelength laser over multimode fiber. The maximum distance of fiber is 550m for multi mode and 5km for single mode.
