10 Gigabit single-mode optical modules are SFP+ transceivers designed for long-distance fiber connections, typically using 1310 nm or 1550 nm wavelengths over single-mode fiber.

Overview

10G single-mode optical modules are used to connect switches, routers, and servers over long distances, ranging from 10 km to over 80 km. They are commonly implemented in SFP+ form factor, which is hot-swappable and supports high-density deployments in data centers and enterprise networks . These modules typically use LC duplex connectors and may include Digital Diagnostic Monitoring (DDM/DOM) for real-time performance monitoring .

Common 10G Single-Mode Modules

1. 10GBASE-LR (Long Reach)
   • Wavelength: 1310 nm
   • Distance: Up to 10 km over single-mode fiber
   • Applications: Campus networks, metro interconnects, enterprise backbones
   • Features: Uses Distributed Feedback (DFB) laser, LC duplex connector, optional DDM
2. 10GBASE-ER (Extended Reach)
   • Wavelength: 1550 nm
   • Distance: Up to 40 km over single-mode fiber
   • Applications: Metro area networks, long-haul enterprise links
   • Features: Higher optical power for extended distance, LC duplex connector
3. 10GBASE-ZR (Ultra Long Reach)
   • Wavelength: 1550 nm
   • Distance: Up to 80 km over single-mode fiber
   • Applications: Long-haul telecom and intercity links
   • Features: High-power DFB laser, LC duplex connector, often requires optical amplification
4. 10GBASE-LRM (Long Reach Multimode, compatible with SMF)
   • Wavelength: 1310 nm
   • Distance: Up to 220 m on standard multimode fiber, can interoperate with single-mode fiber using mode conditioning patch cord
   • Applications: Mixed fiber environments, short campus links
5. Cisco SFP-10G-LR
   • Vendor-specific 10GBASE-LR module
   • Distance: 10 km over SMF
   • Features: Certified for Cisco platforms, DDM support, hot-swappable
6. Cisco SFP-10G-ER
   • Vendor-specific 10GBASE-ER module
   • Distance: 40 km over SMF
   • Features: High optical power, DDM support, compatible with Cisco switches and routers
7. Juniper EX-SFP-10GE-LR
   • 10GBASE-LR module for Juniper devices
   • Distance: 10 km over SMF
   • Features: LC duplex, DDM, compatible with Juniper MX and EX series
8. Juniper EX-SFP-10GE-ER
   • 10GBASE-ER module for Juniper platforms
   • Distance: 40 km over SMF
   • Features: High-power laser, LC duplex, DDM support
9. Fiberolt 10GBASE-LR SFP+
   • Wavelength: 1310 nm
   • Distance: 10 km over SMF
   • Applications: Data centers, enterprise networks
   • Features: Low power consumption (<1W), LC duplex connector
10. Fiberolt 10GBASE-ER SFP+
    • Wavelength: 1550 nm
    • Distance: 40 km over SMF
    • Applications: Metro networks, long-distance links
    • Features: LC duplex, DDM support, energy-efficient design

Key Considerations

• Distance and Wavelength: LR modules are for 10 km, ER for 40 km, and ZR for 80 km; LR uses 1310 nm, ER/ZR use 1550 nm.
• Connector Type: Most single-mode modules use LC duplex connectors.
• Compatibility: Ensure modules are compatible with your switch/router vendor and support DDM if monitoring is required.
• Power Budget: Longer distances require higher optical power and may need amplification for ZR modules. These 10G single-mode modules provide flexible options for enterprise, data center, and metro network deployments, enabling high-speed, long-distance connectivity over single-mode fiber.