Which type of fiber is less susceptible to modal dispersion?

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Multiple Choice

Which type of fiber is less susceptible to modal dispersion?

Single-mode fiber is less susceptible to modal dispersion due to its design and structure. In single-mode fiber, the core diameter is much smaller, typically around 8 to 10 micrometers. This small core allows only a single mode of light to propagate through the fiber, thereby minimizing the number of light paths. Modal dispersion occurs when different modes of light travel at different speeds, which can lead to signal distortion and reduced data integrity over longer distances. Since single-mode fiber only allows one mode of light to travel, it eliminates the variations in travel time associated with multiple light paths, thus maintaining the clarity and quality of the signal over longer lengths compared to multimode fibers. In contrast, multimode fibers have a larger core that supports multiple light modes, which can result in varying arrival times of light waves and consequently higher modal dispersion. While plastic optical fibers and standard fibers can vary in performance, they generally do not offer the same level of resistance to modal dispersion as single-mode fibers.

Single-mode fiber is less susceptible to modal dispersion due to its design and structure. In single-mode fiber, the core diameter is much smaller, typically around 8 to 10 micrometers. This small core allows only a single mode of light to propagate through the fiber, thereby minimizing the number of light paths.

Modal dispersion occurs when different modes of light travel at different speeds, which can lead to signal distortion and reduced data integrity over longer distances. Since single-mode fiber only allows one mode of light to travel, it eliminates the variations in travel time associated with multiple light paths, thus maintaining the clarity and quality of the signal over longer lengths compared to multimode fibers.

In contrast, multimode fibers have a larger core that supports multiple light modes, which can result in varying arrival times of light waves and consequently higher modal dispersion. While plastic optical fibers and standard fibers can vary in performance, they generally do not offer the same level of resistance to modal dispersion as single-mode fibers.

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