Cisco GLC-LH-SMD Gigabit SFP Transceiver Module for Multimode and Single-Mode Fiber

The Cisco GLC-LH-SMD is a hot-swappable Gigabit Ethernet SFP transceiver designed to provide reliable optical connectivity over both single-mode fiber (SMF) and multimode fiber (MMF). Compliant with the 1000BASE-LX/LH standard, it operates at a wavelength of 1310 nm and supports long-distance Gigabit Ethernet communication. The transceiver features Digital Optical Monitoring (DOM) for real-time performance monitoring and is ideal for enterprise networks, campus backbones, metropolitan area networks, and data center environments.

Product Features

Gigabit Ethernet Performance

Supports Gigabit Ethernet data transmission at speeds of up to 1.25 Gbps for fast and reliable network connectivity.

Single-Mode and Multimode Fiber Compatibility

Operates over both single-mode fiber (SMF) and multimode fiber (MMF), offering flexible deployment across different network infrastructures.

1310 nm Optical Wavelength

Uses a 1310 nm wavelength to deliver stable, high-quality optical communication over short and long distances.

Long-Distance Transmission

Supports transmission distances of up to 10 km over single-mode fiber and up to 550 meters over multimode fiber when used with a mode conditioning patch cable where required.

Digital Optical Monitoring (DOM)

Provides real-time monitoring of key operating parameters, including transmit power, receive power, module temperature, supply voltage, and laser bias current.

Hot-Pluggable SFP Form Factor

Allows installation and replacement without powering down the host device, minimizing network downtime.

Duplex LC Connector

Features a Duplex LC optical connector for secure, reliable, and low-loss fiber optic connections.

Broad Cisco Compatibility

Compatible with a wide range of Cisco switches, routers, and networking devices equipped with Gigabit SFP ports.

Product Specifications

• Model: GLC-LH-SMD
• Product Type: SFP Optical Transceiver Module
• Ethernet Standard: 1000BASE-LX/LH
• Data Rate: 1.25 Gbps
• Form Factor: SFP
• Fiber Type: Single-Mode Fiber (SMF) and Multimode Fiber (MMF)
• Connector Type: Duplex LC
• Optical Wavelength: 1310 nm
• Maximum Transmission Distance:
  • Up to 10 km on Single-Mode Fiber (SMF)
  • Up to 550 m on Multimode Fiber (MMF) with a mode conditioning patch cable where required
• Digital Optical Monitoring (DOM): Supported
• Hot-Swappable: Yes
• Compliance Standards: IEEE 802.3z 1000BASE-LX/LH, SFP MSA
• Operating Temperature: 0°C to 70°C
• Power Consumption: Less than 1 W
• Applications: Enterprise networks, campus networks, metropolitan area networks (MANs), data centers, Gigabit Ethernet switch uplinks, router interfaces, and storage area networks (SANs).