H19-410_V1.0 · Question #371
The main factors that limit fiber-optic communication systems include dispersion, attenuation, signal-to-noise ratio, and nonlinearity.
The correct answer is A. True. A is correct because dispersion, attenuation, signal-to-noise ratio (SNR), and nonlinearity are all well-established limiting factors in fiber-optic systems - each degrades signal quality or transmission distance in distinct ways. Dispersion (both chromatic and…
Question
The main factors that limit fiber-optic communication systems include dispersion, attenuation, signal-to-noise ratio, and nonlinearity.
Options
- ATrue
- BFalse
How the community answered
(32 responses)- A81% (26)
- B19% (6)
Explanation
A is correct because dispersion, attenuation, signal-to-noise ratio (SNR), and nonlinearity are all well-established limiting factors in fiber-optic systems - each degrades signal quality or transmission distance in distinct ways. Dispersion (both chromatic and polarization-mode) causes pulse broadening, limiting bandwidth-distance product. Attenuation reduces signal power over distance, requiring repeaters or amplifiers. SNR degradation accumulates from noise sources like amplified spontaneous emission (ASE) in optical amplifiers. Nonlinear effects (such as self-phase modulation, cross-phase modulation, and four-wave mixing) become significant at high optical powers and distort signals.
Since this is a true/false question with no distractors to evaluate, simply recognizing that all four factors are real, physically distinct limitations confirms the answer.
Memory tip: Use the acronym DANS - Dispersion, Attenuation, Noise (SNR), Stimulated/nonlinear effects - to recall the four core limits of any fiber-optic link.
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