Article Overview
10G single-mode optical modules typically use SFP+ form factor, operate at 1310–1550nm wavelengths, support link lengths from 10 km up to 40 km, and use LC duplex connectors.
Key Specifications
Form Factor: SFP+ (hot-pluggable, compact design for high port density) Data Rate: 10 Gbps full-duplex Ethernet Wavelength:
- 1310 nm for 10GBASE-LR modules (up to 10 km)
- 1550 nm for 10GBASE-ER modules (up to 40 km) over standard single-mode fiber (G.652) Maximum Transmission Distance:
- 10 km for LR modules
- 40 km for ER modules Connector Type: Duplex LC UPC Fiber Type: Single-mode fiber (SMF, G.652) Compliance Standards: IEEE 802.3ae 10GBASE-LR/ER, SFP+ MSA Power Budget: Typically sufficient to overcome standard SMF attenuation for the specified distances Monitoring Features: Many modules support digital diagnostics monitoring (DDM) for real-time monitoring of optical power, temperature, and voltage
Special Variants
BIDI (Bidirectional) Modules:
- Use a single fiber for both transmit and receive, requiring paired modules with complementary wavelengths (e.g., 1270 nm TX / 1330 nm RX)
- Useful for fiber-constrained environments Deployment Considerations:
- Ensure wavelength compatibility between modules; mismatched wavelengths reduce maximum distance (e.g., connecting a 1310 nm module to a 1550 nm module may limit reach to 20 km)
- ER modules are preferred for long-haul metro or DCI links, while LR modules are suitable for campus or short-distance interconnects
- Hot-pluggable SFP+ design allows easy upgrades and high port density in data centers
Summary
10G single-mode optical modules provide flexible, high-speed connectivity for enterprise, data center, and telecom networks. Choosing the right module depends on required distance, fiber type, and network topology, with ER modules offering the longest reach (up to 40 km) and LR modules supporting standard 10 km links. BIDI modules offer single-fiber solutions for constrained deployments, while all modules maintain IEEE 802.3ae compliance and LC duplex connectivity for interoperability.
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