10GBASE-ER SFP+ 1550nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module

The 10GBASE-ER SFP+ 1550nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module is designed for high-speed 10GbE connectivity over long distances, supporting up to 40 kilometers of transmission over single-mode fiber (SMF). This module operates at a 1550nm wavelength, optimized for long-haul communication. To understand the difference between 1310nm and 1550nm wavelengths, it’s crucial to consider the characteristics of each wavelength for a 40km transmission.

Attenuation (Signal Loss)

1550nm has significantly lower attenuation compared to 1310nm over long distances. This means the signal maintains its strength and quality over greater distances, making 1550nm ideal for long-distance applications like 40km. The lower attenuation ensures that less signal boosting or repeaters are needed, reducing network complexity and cost.

1310nm, on the other hand, experiences higher attenuation over long distances. As the signal travels, it degrades more quickly, especially over distances like 40km, requiring additional equipment like amplifiers or repeaters to maintain reliable transmission.

Chromatic Dispersion

1550nm is less susceptible to chromatic dispersion, which can cause the signal to spread out and distort over long distances. This results in clearer, more reliable data transmission over 40km, minimizing signal loss and ensuring that high-speed data is transmitted with integrity.

1310nm has slightly higher chromatic dispersion, especially over longer distances, which may lead to signal degradation. At 40km, this dispersion effect can result in timing errors, packet loss, or increased bit error rates.

For 40km transmission, 1550nm offers better signal integrity, lower attenuation, and reliable long-distance performance compared to 1310nm. While 1310nm may be sufficient for shorter distances, 1550nm is the preferred choice for long-haul, high-performance networks like the 10GBASE-ER SFP+ 1550nm 40km module.