What is the maximum distance for singlemode optical fiber cable in a structured cabling system (SCS)?

The maximum distance for singlemode optical fiber cable in a structured cabling system is indeed 3000 meters. This standard aligns with the ability of singlemode fiber to transmit signals over long distances with minimal loss and high bandwidth capabilities.

Singlemode fibers are designed to carry light directly down the fiber core, which is typically around 8 to 10 micrometers in diameter. This design allows for reduced modal dispersion, enabling longer distances between transmission points compared to multimode fibers, which are limited by their larger core size and greater modal dispersion.

In practical applications, a distance of 3000 meters is often utilized in backbone installations and inter-building connectivity, making it a widely accepted maximum distance for structured cabling systems using singlemode optical fiber. This standard ensures that data integrity and performance are maintained over long spans, providing efficient and reliable network infrastructure.