Explore the essential performance parameters of multimode fiber optic cables, including core size, bandwidth, attenuation, and modal dispersion. Understand how these factors influence network performance and suitability for various applications. This Applications Engineering Note (AE Note) discusses the criteria for properly selecting the optimal multimode fiber (MMF) for enterprise applications. This is made possible by its relatively large core diameter, typically 50 or 62. MultiFiber Pro Optical Power Meter and Source is the first fiber tester that can certify MPO fiber trunks without the use of fan-out. Multimode fiber optic cables are a type of cable that allows for the transmission of data over long distances at high speeds.