FEATURE : DISRUPTIVE TECHNOLOGY
A disruptive approach beyond the standards
The problem of MMF transmission capacity was discussed a few years ago within the IEEE workgroups . Designed for backward compatibility with OM1 and OM2 fibres , a type of 10 Gb / s interface was developed within the IEEE 802.3aq standard , referred to as long reach multi-mode ( LRM ).
By combining signal processing to compensate for modal dispersion with specific MMF beam injection conditions using mode conditioning patchcords , it is possible to achieve a range of about 200m at 10 Gb / s .
However , this does not cover all the current needs of local networks in terms of throughput and reach . Fortunately , optical technologies have evolved in recent years and it is now possible to use innovative beam shaping
Kevin Lengle , Ph . D , Product Line Manager AROONA , Cailabs
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