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Dictionary of Computers - wavelength division multiplexing
wavelength division multiplexing
Technique for sending multiple streams of light down a single fibre-optic cable. The different signals have slightly different wavelengths, or colours. WDM can greatly increase the capacity of existing fibre-optic links and thus dramatically lower the cost of long-distance communications. BT started operating its first two WDM links in 1997 with 16 channels, which made them 16 times faster than before.
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Green represents agriculture. Red recalls the struggle for independence. Black stands for the Zambian people. Orange symbolizes Zambia's mineral wealth, particularly the major deposits of copper. Effective date: 24 October 1964.
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