What is OM5 fiber and how is it different than OM4 & OM3?
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As the name suggests, OM5 is a multimode fiber cable. It’s pretty new to the industry, and it is designed mainly for excessive bandwidth and brief to medium variety packages. What makes it extra than simply the following generation of OM cable is the brand new take on multiplexing. OM5 is the primary permitted as WBMMF (Wide Band Multimode Fiber) is designed to mainly manage excessive-pace information middle packages with the use of fibers to transmit from 40GBs as much as 100GBs and is powered via way of means of shortwave wavelength department multiplexing (SWDM). This multiplexing layout permits OM5 to dramatically lessen parallel fiber counts. Operating withinside the 850 to 950 nm variety, OM5 can offer one hundred GB information streams with simply one pair of parallel fibers.
OM3 and OM4 multimode fiber are common styles of fiber utilized in nearby place networks–normally in spine cabling among telecommunications rooms and withinside the facts center among major networking and storage place network (SAN) switches.
Both of these fiber types are taken into consideration laser-optimized 50/one hundred twenty five multimode fiber, which means they each have a 50 micron (µm) diameter middle and a one hundred twenty five µm diameter cladding, that is a unique coating that prevents light from escaping the core. Both fiber kinds use the equal connectors, the equal termination and the equal transceivers–vertical-cavity floor emitting lasers (VCSELs) that emit infrared light at 850 nanometers (nm).
With such a lot of similarities, and frequently manufactured with the equal color aqua cable jacket and connectors, it may be tough to inform those fiber sorts apart. But there are a few variations to be conscious of. As a part of our Cable Testing 101, let’s take a better look.
The most important distinction among OM3 and OM4 multimode fiber is in the inner production of the cable’s fiber core. For a fiber hyperlink to work, the light from the VCSEL transceiver plenty have sufficient electricity to attain the receiver at the opposite end. There are overall performance values which can save you this– optical attenuation and modal dispersion.