10G single-mode SFP+ optical modules include LR, ER, ZR, and BiDi types, designed for long-distance transmission over single-core fiber.

Overview of Single-Mode 10G SFP+ Modules

Single-mode 10G SFP+ modules are optimized for long-distance fiber optic communication using a single-core fiber strand. They are widely used in data centers, enterprise backbones, and metro networks due to their ability to support high-speed 10 Gigabit Ethernet over extended distances .

Common Types and Specifications

• 10GBASE-LR (Long Reach): Operates at 1310 nm, supports distances up to 10 km, and uses a distributed feedback (DFB) laser for reliable single-mode transmission .
• 10GBASE-ER (Extended Reach): Operates at 1550 nm, supports distances up to 40 km, and uses an externally modulated laser (EML) for ultra-long-haul applications .
• 10GBASE-ZR: Also operates at 1550 nm, designed for very long distances up to 80 km, suitable for metro and long-haul networks .
• SFP+ BiDi (Bidirectional): Transmits and receives data over a single strand of single-mode fiber using different wavelengths for each direction, effectively reducing fiber usage by 50%. Typical deployment distances include 10 km, 20 km, and 40 km .

Key Features

• Form Factor: SFP+ modules are compact, hot-swappable, and compatible with standard SFP+ ports.
• Interface: Most single-mode modules use LC duplex connectors, while BiDi modules use a single LC simplex connector .
• Standards Compliance: Modules comply with IEEE 802.3ae, SFF-8472, and SFF-8431 standards .
• Applications: Ideal for long-distance interconnects, data center uplinks, campus networks, and service provider transport networks.

Advantages

• Extended Reach: Single-mode modules support distances far beyond multimode fiber, making them suitable for campus and metro networks.
• Fiber Efficiency: BiDi modules reduce fiber cabling requirements, simplifying network management and lowering costs.
• Scalability: Compatible with existing 10G infrastructure and can be integrated into phased network upgrades. In summary, 10G single-mode SFP+ optical modules provide flexible, long-distance connectivity options, with LR, ER, ZR, and BiDi types addressing different reach and deployment needs. They are essential for high-speed, fiber-constrained networks where single-core fiber efficiency and extended transmission distances are critical .