First, the transmission distance is different
1. om4 fiber: The maximum transmission distance of om4 fiber in the state of 1G, 10G, 40G/100G is 1km, 550m, and 150m, respectively.
2. om3 fiber: The maximum transmission distance of om3 fiber in the state of 1G, 10G, and 40G/100G is 1km, 300m, and 100m, respectively.
Second, the production cost is different
1. om4 fiber: om4 fiber has higher production costs due to high transmission bandwidth requirements.
2. om3 optical fiber: om3 optical fiber has lower production cost due to low transmission bandwidth requirements and large production demand.
3. Different uses
1. om4 optical fiber: om4 optical fiber is suitable for high-speed network applications, suitable for data centers, financial centers and enterprise parks.
2. om3 fiber: om3 fiber is used in short-range networks, local area networks (LANs) and private networks.
The real difference between OM3 and OM4 multimode fiber is that OM4 has a higher modal bandwidth - 4700 MHz·km, compared to 2000 MHz·km for OM3 fiber. This means that OM4 fiber can transmit more information over the same distance. The main difference between M3 and OM4 multimode fibers is the internal construction of the core.
Both types of fibers are laser-optimized 50/125 multimode fibers, that is, both have a core diameter of 50 µm and a cladding diameter of 125 µm, which are specially clad to prevent light leakage from the core. The two fibers use the same connectors, the same terminations, and the same transceivers—vertical-cavity surface-emitting lasers (VCSELs) that emit infrared light at 850 nm. The main difference between OM3 and OM4 multimode fibers is the internal construction of the core.
