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DWDM or Dense wave division multiplexing is a complex term for a relatively straightforward concept. It is a technology that transmits optical signals across fiber optics cables using a single color of light also called a wavelength. Traditional optical transmission solutions emitted broad spectrum – or white – light. Using that technology each fiber optic cable could only support the transmissions from a single laser. With dense wave division multiplexing, the data transmitted by numerous lasers – each transmitting in a different color of light - can be aggregated and transported over a single fiber. With modern DWDM technology 80 or more different optical signals can be carried over a single fiber dramatically increasing the capacity of fiber optics networks.

Published on: August 06, 2021