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Tele-Communication (Telecom) Terms Glossary and Dictionary
4WL-WDM: Four-Wavelength Wave Division Multiplexing
Four-Wavelength Wave Division Multiplexing (4WL-WDM) is type of multiplexing introduced in 1996 by MCI Communications Corp, also known as Quad-WDM. It allows a single fiber to accommodate four light signals instead of one, by routing them at different wavelengths through the use of narrow-band wave division multiplexing equipment.
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