A Gigabit Single-Mode Optical Module with LC interface is an SFP transceiver that supports 1 Gbps data rates over single-mode fiber, typically using a 1310nm wavelength and LC duplex connectors for distances up to 20 km or more.

Overview

Gigabit Single-Mode SFP modules are hot-swappable transceivers designed to connect network switches, routers, or media converters to single-mode fiber networks. They use LC-type duplex connectors, which are compact and widely adopted for high-density fiber installations . These modules are compatible with MSA-compliant SFP slots, allowing interoperability across different vendors, including Cisco and Intellinet devices .

Key Specifications

• Data Rate: 1 Gbps (Gigabit Ethernet)
• Fiber Type: Single-mode fiber (SMF)
• Wavelength: Typically 1310 nm for standard 1000BASE-LX/LH modules
• Connector Type: LC duplex
• Maximum Distance: Up to 20 km for industrial modules; standard modules can reach 10 km or more depending on fiber quality
• Hot-Pluggable: Yes, allowing installation or replacement without powering down the network device
• Industrial Grade: Some modules, like TRENDnet TI-MGBS20, support extreme temperatures (-40° to 85°C) for industrial environments

Applications

• Enterprise Networks: Connecting switches and routers across buildings or campuses
• Data Centers: High-density fiber connections with LC interfaces
• Industrial Networks: Ruggedized modules for manufacturing or outdoor environments
• Long-Distance Links: Campus or metropolitan area networks requiring single-mode fiber spans up to 20 km

Advantages

• Flexibility: Can mix and match with copper or multimode SFPs on a port-by-port basis
• Reliability: Metal housing reduces electromagnetic interference and enhances durability
• Ease of Use: Supports plug-and-play installation with automatic recognition by compatible devices
• Digital Optical Monitoring (DOM): Some modules provide real-time monitoring of optical power and temperature

Example Modules

• TRENDnet TI-MGBS20: Industrial 1000Base-LX SFP, single-mode, LC duplex, 20 km reach, -40° to 85°C operating range
• H!Fiber 1000BASE-LX/LH SFP: Standard single-mode LC module for data centers and enterprise networks
• Intellinet SFP Transceiver: MSA-compliant, compatible with Cisco GLC-LH-SM-20, hot-swappable, 1 Gbps These modules are ideal for high-speed, long-distance fiber connections where reliability, compact form factor, and vendor interoperability are critical.