December 2001
Intermediate to advanced
656 pages
27h 19m
English
Content preview from Networking Explained, 2nd Edition
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170 Networking Explained, Second Edition
toward the center of the fiber. So instead of light rays “bouncing” back and forth in a “V
and inverted “V” pattern as shown in Figure 4.16, we have more of a “rounded” pattern
. Thus, light rays within a graded-index fiber propagate along an
oscillatory path, which decreases the amount of modal dispersion. This change in the
fiber’s refractive index reduces the amount light “bounces,” which enables the signal to
travel faster through the cable. In contrast to graded-index, there is step-index fiber. Unlike
the gradual change of a graded-index fiber core’s refractive index, the index of refraction
of a step-index ...
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