Multimode Fiber Specs

This multiplexing design allows om5 to dramatically reduce parallel fiber counts.

Multimode fiber specs.

Om3 and om4 fibers will support upcoming 40 and 100 gb s speeds. Multimode fibers are described by their core and cladding diameters. At present there are four kinds of multi mode fibers. The large core gives om cables a higher light gathering capacity compare to os cables.

Multimode fibers are described by their core and cladding diameters. Some types are single mode and some types are multimode. Multimode fiber optic cable has a large diametral core that allows multiple modes of light to propagate. Each type of them has different characteristics.

850 nm laser optimized 50 125 μm. Om1 om2 om3 and om4. Multi mode fiber has a fairly large core diameter that enables multiple light modes to be propagated and limits the maximum length of a transmission link because of modal dispersion. Om5 is the first approved as wbmmf wide band multimode fiber is designed to specifically handle high speed data center applications with using two fibers to transmit from 40gbs up to 100gbs and is powered by shortwave wavelength division multiplexing swdm.

Two types of om cables with core diameters of 50 micron and 62 5 micron are specified. Multi mode links can be used for data rates up to 100 gbit s. 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. Om1 62 5 µm fiber has reached its performance limit.

The main difference between om and os type cables is in core diameter with om multimode fibers has a much larger core size. The diameter of the multi mode fiber is either 50 125 µm or 62 5 125 µm. 850 nm laser optimized 50 125 μm. Only om3 and om4 multimode fibers are included in the ieee 802 3ba standard for next generation 40 and 100 gb s ethernet.

In lab testing 50 µm fiber offers as much as ten times the bandwidth of 62 5 µm fiber. Channel attenuation db 4 0 4 0 4 0 4 0 supportable distance m ft 300 984 300 984 300. Because of this the number of light reflections created as the light passes through the core increases creating the ability for more data to pass through at a given time. Usually the diameter of the multimode fiber is either 50 125 µm or 62 5 125 µm.

Om1 om2 om3 and om4. At present there are four commonly used om multimode fibers.