The multimode fiber has a larger diameter core for light path than SM fiber. Therefore, light propagates in these fibers in the form of multiple modes, each taking a slightly different path through the fiber and travelling at a slightly different velocity for a given fiber length. The Multimode optical light source is based on cheaper LED’s and electronics making MM fiber networks much cheaper optical connectivity solutions. However, the low light concentration makes this application fit for only short distances. This white paper further discusses the possibility of extending the MM fiber capability to up to 2km with PacketLight’s WDM product suite.
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