Cisco GLC-LH-SMD 1000BASE-LX/LH SFP is made 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. 1300-nm wavelength, extended operating temperature range and DOM support, dual LC/PC connector.
This Figure shows the appearance of GLC-LH-SMD.
The table provides cabling specifications for the SFPs that you install in the Gigabit Ethernet port.
Note that all SFP ports have LC-type connectors, and the minimum cable distance for all SFPs listed (multimode and single-mode fiber) is 6.5 feet (2 m).
SFP Port Cabling Specifications
|Product||Wavelength (nm)||Fiber Type||Core Size (μm)||Modal Bandwidth (MHz* Km)***||Operating Distance (m)|
|850||MMF||62.5||160 (FDDI-grade)||220 (722 ft)|
|62.5||200 (OM1)||275 (902 ft)|
|50||400 (400/400)||500 (1,640 ft)|
|50||500 (OM2)||550 (1,804 ft)|
|50||2000 (OM3)||1000 (3281 ft)|
|1310||MMF*||62.5||500||550 (1,804 ft)|
|50||400||550 (1,804 ft)|
|50||500||550 (1,804 ft)|
|SMF||-**||–||10,000 (32,821 ft)|
|1000BASE-EX||1310||SMF||-**||–||40,000 (131,234 ft)|
|1550||SMF||–||–||Approximately 70 km depending on link loss|
|1000BASE-BX-U||1310||SMF||-**||–||10,000 (32,821 ft)|
|1000BASE-BX-D||1490||SMF||-**||–||10,000 (32,821 ft)|
*A mode-conditioning patch cord, as specified by the IEEE standard, is required regardless of the span length. Note how the mode conditioning patch cord for 62.5-μm fibers has a different specification from the mode-conditioning patch cord for 50-μm fibers.
**ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
***Specified at transmission wavelength.