In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i. The concept involves sending multiple independent data streams down a single strand of fiber, much like transforming a single-lane road into a. 📦 For purchasing, use the RP Photonics Buyer's Guide for wavelength division multiplexing. It provides an expert-curated supplier directory, buyer-focused technical background information, and structured selection criteria to support professional procurement decisions. WDM allows communication in both the directions in the fiber cable. This chapter addresses the operating principles of WDM.
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