100Mbps Single-Mode Optical Module Products

100Mbps single-mode optical modules, such as 100BASE-LX SFP transceivers, are designed for long-distance fiber links exceeding 2 km.

Overview

100Mbps single-mode optical modules are Fast Ethernet SFP transceivers that convert electrical signals into optical signals for transmission over single-mode fiber (SMF). They are ideal for long-distance connections, typically beyond 2 kilometers, and are commonly used in enterprise networks, industrial setups, and legacy system upgrades. Single-mode modules offer low signal attenuation and high bandwidth potential, making them suitable for campus backbones and inter-building links .

Common Standards

• 100BASE-LX: Operates at 1310nm wavelength, supports distances up to 10 km over single-mode fiber, and uses duplex LC connectors. It is the most widely used 100Mbps single-mode standard .
• 100BASE-EX: Designed for extended reach, typically up to 40 km, also using 1310nm wavelength and duplex fiber .
• 100BASE-LH: Similar to LX but optimized for longer distances, often up to 70 km in some implementations .

Example Modules

• StarTech MSA 100BASE-LX SFP: Hot-swappable, MSA-compliant, supports DDM for monitoring optical power and temperature, compatible with most routers and switches .
• LINK-PP 100M Single-Mode SFPs: Budget-friendly modules compatible with major OEMs, supporting distances from 2 km to 10 km, ideal for network upgrades without replacing existing fiber infrastructure .

Key Features to Consider

• Wavelength: Typically 1310nm for single-mode 100Mbps modules.
• Distance: Choose based on your fiber link length (2–10 km for LX, up to 40 km for EX).
• Duplex Type: Most single-mode modules are dual-fiber (duplex), with one fiber for transmit (Tx) and one for receive (Rx).
• Device Compatibility: Ensure the module is compatible with your switch or router to avoid network issues.
• Digital Diagnostics Monitoring (DDM): Provides real-time monitoring of optical power, temperature, and voltage for network reliability.

Applications

• Connecting buildings on a campus or industrial site.
• Extending network reach beyond copper cabling limitations.
• Upgrading legacy Fast Ethernet networks to fiber without replacing existing infrastructure. By selecting the appropriate 100Mbps single-mode optical module, you can achieve reliable long-distance connectivity while maintaining network performance and minimizing costs .