Which advantage is associated with wavelength division multiplexing?

Wavelength Division Multiplexing (WDM) is a technology that enhances the capacity of fiber optic communications by allowing multiple wavelengths (or channels) to be transmitted simultaneously over a single optical fiber. Each channel operates at a different frequency, effectively maximizing the use of the available bandwidth of the fiber. This capability leads to a more efficient use of the existing fiber infrastructure, enabling service providers to increase data transmission rates without needing to lay additional fiber cables.

Utilizing WDM contributes to a higher aggregate data throughput, which is particularly beneficial in environments where bandwidth demand is rapidly increasing. By expanding the carrying capacity of the fiber, WDM allows network operators to support more data services and handle larger volumes of traffic, making it a key technology in modern communication networks. This is why the option emphasizing efficient use of fiber capacity is the correct one in the context of WDM's advantages.