Optical fiber type OM5
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Optical fiber type OM5
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Optical fiber type OM5

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As is known, there are currently different types of multimode fiber optic cables on the market: OM1, OM2, OM3 and OM4 – Cables that are in stock (FO*OM*). In 2016, TIA (Telecommunications Industry Association) released a new fiber optic standard TIA-492AAAE called OM5.





Cables and cords with OM5 fiber are still rare from a commercial point of view, however it is expected that by the end of the year





already possible to supply to the market.





What characterizes the OM5 Fiber?





Basically, it is an OM4 fiber with slight manufacturing changes that allows for a better response in the 850-950nm wavelengths, which makes it especially useful in applications for 40Gbps, 100Gbps or 400Gbps when using SWDM (Short Wave Division multiplexing)










Figure 1 – SWDM System





SWDM system what is it anyway?





The SWDM (Short Wave Division Multiplexing) system uses 4 different wavelengths (called lambda λ1, λ2, λ3, λ4) that are multiplexed onto a physical medium (optical fiber) and then extracted from that medium (multiplexed). The information bit rate is 4x (the rate in each lambda), if each lambda supports 25Gbps





I have a final result of 100Gbps.





What are the advantages of Fiber OM5?










The OM5 fiber makes it possible to increase the maximum communication speed or reduce the number of fibers by a factor of 4, when using SWDM systems. For example, if we want to reach a speed of 100Gbit using OM3 or OM4 cable, 8 fibers are needed, while if we use a cable with OM5 fibers, only 2 fibers are needed.





Does it mean that OM5 fiber will be the future of multimode fiber and will it replace OM3 and OM4 fibers?





In most applications the OM5 will not have any advantage, its use will only be justified in data centers (data centers) where SWDM systems are used. For a business or industrial customer who only wants to implement fiber circuits up to 10Gbps, there will be no advantage in implementing an OM5 infrastructure.





In terms of cost, OM5 fiber is expected to be 2x the value of OM4 fiber. Attached table with maximum distances reached considering the desired speeds:










Is OM5 Fiber compatible with OM3 and OM4 fibers?





Yes, OM5 Fiber is fully compatible with existing OM3 and OM4 fibers.

	    
	

	
		

		
	

	
	




    
    				

			
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