It is a method for combining multiple data signals onto a single optical fiber by assigning each data stream a distinct light wavelength. This technique enables bidirectional communications over a. Abstract Wavelength division multiplexing or WDM allows the combining of a number of independent information-carrying wavelengths onto the same fiber, because of the wide spectral region in which optical signals can be transmitted efficiently. With just two wavelengths, the multiplexers and demultiplexers can be based on directional couplers because, as mentioned earlier in Section 3. 2, couplers are naturally. ptical multiplexing techniques, wavelength division multiplexing (WDM). Tailored for professionals sourcing solutions from CommMesh, it.
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