Separate Signals Through Optical Fibers For Ultrafast Home Network
Dutch-sponsored researcher Christos Tsekrekos has investigated how a small network for at home or in a company can function optimally. His research analyses the MGDM technique (Mode Group Diversity Multiplexing) of the Eindhoven University of Technology. This technique transmits each TV, telephone and Internet signal via a separate group of light rays through the optical fiber cable.
Such a technology has not yet been marketed. Yet in the ideal situation it could be applied in a glass or polymer fiber, has the potential of being cheap, and transmits all information without disruption.
Existing systems for small networks at home or in a company make use of multimode glass fibers or multimode polymer optical fibers (POF). The latter are relatively thick cables (about 1 mm thick, thus thicker than the glass fiber m thick). Multimode fiber cables can conduct many light rays and?which is 0.125 can operate free of disruption and with a greater bandwidth than a wireless connection. However, due to a slight variation in the speed of the light rays through the multimode fiber, a signal transmitted by all of these rays becomes spread out. Consequently, the signals become broader and therefore fewer signals fit in the fiber, limiting the transmission capacity.
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