Dispersion-shifted fiber (DSF) is a type of optical fiber designed to minimize chromatic dispersion across certain wavelengths, particularly in the wavelength range commonly used for long-distance fiber optic communication, such as around 1550 nm. In conventional single-mode fibers, chromatic dispersion—a phenomenon where different wavelengths of light travel at different speeds—can lead to signal broadening over long distances, which ultimately limits the bandwidth and performance of fiber optic systems.
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