It is possible to connect the two different cable types; however, a media converter must be used to adapt the core sizes and optical wavelengths. Dual fiber modules use two fibers. They are easier to set up and give steady communication. Understanding the compatibility constraints prevents costly downtime and troubleshooting. Single-mode. Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus. Multi-mode fiber has a fairly large core diameter that enables multiple light modes to be. While single-mode fiber (SMF) dominates long-distance and carrier-grade infrastructure, multimode fiber remains the most cost-efficient and practical choice for enterprise buildings, campus networks, and modern data centers. This guide explains the five generations of multimode fiber - OM1, OM2. Here's a quick breakdown to help you see the biggest differences between the two: Single mode fiber is built for speed and distance. If your network stretches over long distances or requires superior performance at all times, this is often the right choice.