Long-distance telecommunication providers use FDM to multiplex single-mode optical fibers, an application commonly called ____.
A) code-division multiplexing
B) wavelength-division multiplexing
C) space-division multiplexing
D) time-division multiplexing

Question

Long-distance telecommunication providers use FDM to multiplex single-mode optical fibers, an application commonly called ____.
A) ​code-division multiplexing
B) ​wavelength-division multiplexing
C) ​space-division multiplexing
D) ​time-division multiplexing

Quizplus · Accepted Answer

FDM is used for wavelength-division multiplexing (WDM) to combine multiple optical signals of different wavelengths onto a single optical fiber, allowing for increased data transmission capacity. Code-division multiplexing (CDM) uses a different technology that assigns a code to each signal and overlaps them in time, while space-division multiplexing (SDM) uses multiple fibers/cables to transmit signals simultaneously. Time-division multiplexing (TDM) involves dividing a single channel into multiple time slots for different signals.

Long-Distance Telecommunication Providers Use FDM to Multiplex Single-Mode Optical Fibers