dispersion-shifted fiber

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dispersion-shifted fiber

A singlemode optical fiber that has been designed to reduce chromatic dispersion. The fiber core is fabricated in several layers with different refractive indices running in parallel throughout its length. Zero-dispersion-shifted fiber has zero chromatic dispersion at 1550 nm. It is no longer manufactured, because it causes interference in WDM transmission. Nonzero-dispersion-shifted fiber is designed for WDM. It has zero dispersion near 1500 nm and beyond 1600 nm, which provides lower dispersion in the 1550 nm range. See graded-index fiber, step index fiber and dispersion.
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An important observation which can be made from Figure 4, Figure 10, Figure 15 and Figure 20 is that although the trends of ASE noise and FWM noise are opposite, still the total optical noise has followed the trend of FWM emphasizing that FWM is the major contributor of noise in WDM fiber optic system with inline optic amplifiers and non-zero dispersion shifted fiber in the anomalous regime (NZDSF+) operating at 1.
TeraLight Ultra, Alcatel's non-zero dispersion shifted fiber is ideal for successful operation over high data rates and long distances.
The Circe Network will employ Lucent Technologies' TrueWave RS (for "reduced slope") non-zero dispersion shifted fiber optic cable which is capable of utilizing dense wave-division multiplexing (DWDM) technology with synchronous digital hierarchy (SDH) transmission standards.
WRI's testing of the Hi-Mode DMD measured optical signal quality after transmitting at 10 Gb/s on all channels of its latest long-haul DWDM system through 400 km of non-zero dispersion shifted fiber.
The Circe network is the first in Europe to utilize Lucent Technologies' TrueWave RS (for "reduced slope") non-zero dispersion shifted fiber optic cable which is capable of utilizing dense wave-division multiplexing (DWDM) technology with synchronous digital hierarchy (SDH) transmission standards.
PhotonEx achieved these results using commercially available components and non-zero dispersion shifted fiber based on terrestrial fiber spans of 100 kilometers.
MCI was the first long distance carrier to use Corning single-mode fiber in 1983 and the first to deploy dispersion shifted fiber in its domestic routes in 1993.
MetroCor fiber is a non-zero dispersion shifted fiber (NZDSF) optimized for regional and metropolitan applications and DWDM equipment.
With the introduction of optical amplifiers, Dispersion Shifted Fiber and now optical switching in the network, MCI is once again pioneering new and innovative telecommunications technologies that place it at the leading- edge of the industry.