Green Laser LX Cisco SFP Module GLC-LH-SMD Gigabit Ethernet 1310nm
The Cisco GLC-LH-SMD 1000BASE-LX/LH SFP is engineered specifically for single-mode fiber optic networks. This transceiver module, compliant with IEEE 802.3z 1000BASE-LX standards, delivers reliable performance across single-mode fiber spans up to 10 km and multimode fibers up to 550 meters.
For optimal performance on legacy multimode fiber installations, the transmitter should be connected through a mode conditioning patch cable. The module features 1300-nm wavelength operation, extended temperature range capability, and Digital Optical Monitoring (DOM) support with dual LC/PC connectors.
The following table outlines cabling specifications for SFP modules installed in Gigabit Ethernet ports. All SFP ports utilize LC-type connectors, with a minimum cable distance requirement of 6.5 feet (2 meters) for all listed SFP types.
| Specification | Value |
|---|---|
| Product Name | GLC-LH-SMD |
| Form Factor | SFP |
| TX Wavelength | 1310 nm |
| Reach | 10 Km |
| Cable Type | SMF |
| Rate Category | 1000 Base |
| Interface Type | LX |
| DDM | Yes |
| Connector Type | Dual-LC |
| Product | Wavelength (nm) | Fiber Type | Core Size (μm) | Modal Bandwidth (MHz* Km) | Operating Distance (m) |
|---|---|---|---|---|---|
| 1000BASE-SX (GLC-SX-MM D) | 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) | |||
| 1000BASE-LX/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 | - | - | 10,000 (32,821 ft) | ||
| 1000BASE-EX | 1310 | SMF | - | - | 40,000 (131,234 ft) |
| 1000BASE-ZX (GLC-ZX-SM) (GLC-ZX-SMD) | 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) |
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