Photons are the preferred carrier for data transmission due to their high bandwidth and low attenuation in optical fibers. So far, they have been used only in point-to-point transmission systems. The throughput capacity of such a system is limited by transmitter/receiver bandwidth. The electronic bottleneck is even more severe in multiple access networks due to the low switching speeds achievable by electronic circuits. Optical wavelength division multiplexing (WDM) can circumvent some of the limitations imposed by electronics.
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Publish Date: 01 March 1993
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