Cisco 1000BASE-LX/LH SFP for both multimode and single-mode fibers
The 1000BASE-LX/LH SFP, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable.

Product	Wavelength (nm)	Fiber Type	Core Size (μm)	Modal Bandwidth (MHz*Km)***	Operating Distance (m)
1000BASELX/LH(GLC-LH-SMD)	1310	MMF*	62.5	500	550 (1,804 ft)
			50	400	550 (1,804 ft)
			50	500	550 (1,804 ft)
		SMF	_**	_	SMF -**