Transmission distance is a primary way to categorize optical modules: Long-Distance: Supports links of 40 km and beyond (common specs include 40km, 80km, 120km). Three critical factors influence achievable distance: transmit power, receive sensitivity, and optical attenuation. Unlike short-reach optics that operate over multimode fiber at 850 nm, long. Optical modules are fundamental components in fiber optic communication networks, serving as essential photoelectric converters. A key performance metric in optical networking is transmission capacity, which is closely tied to the transmission distance an optical module can support.
