dispersion-shifted fiber


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dispersion-shifted fiber

A singlemode optical fiber designed to reduce chromatic dispersion. The fiber core is fabricated in several layers with different refractive indices running in parallel throughout its length.

Nonzero vs. Zero Dispersion
Nonzero-dispersion-shifted fiber is designed for wavelength division multiplexing (WDM). It has no dispersion near 1500 nm and beyond 1600 nm, which provides lower dispersion in the 1550 nm range. In contrast, zero-dispersion-shifted fiber has zero chromatic dispersion at 1550 nm but causes interference in WDM transmission and is no longer made. See graded-index fiber, step index fiber and dispersion.
References in periodicals archive ?
(2) Dispersion-shifted fiber in L-band:Dispersion-shifted fiber (DSF) is a type of single-mode optical fiber that is tailored to shift the zero-dispersion wavelength from 1,310 nm to 1,550 nm, a wavelength in which the transmission loss is smaller.
The single-mode, non-zero dispersion-shifted fiber (NZ-DSF) technology has a large effective area that operates in the 1,550 nm window while maintaining excellent band performance.
The new carriers are using non-zero dispersion-shifted fiber that can support up to 80 multiplexed channels on a single strand.