wavelength division multiplexing
- noun a method of increasing the data capacity of an optic fibre by transmitting several light signals at different wavelengths along the same fibre.
- Its abbreviation WDM. A data transmission technology in which multiple optical signals are multiplexed onto a single optical fiber. Each of the signals has a different wavelength, and with close spectral spacing, can increase the capacity of a single fiber to over 1 Tbps. In addition, WDM-based networks can carry different types of traffic at different speeds. For instance, ATM and SONET simultaneously. Also called wave division multiplexing, or dense wavelength division multiplexing.
- Abbreviation of wavelength division multiplexing, or wave division multiplexing.