Page 59 - M. Abrahim Thesis

Computer Network 2021

Figure 3-6 shown a fiber-optic cable Structure

The core is the light transmission element at the center of the optical fiber, and all the
light signals travel through the core. This core is typically glass made from a combination of silica
(silicon dioxide) and other elements. Surrounding the core is the cladding, also made of silica but
with a lower index of refraction than the core. Light rays traveling through the fiber core reflect
off this core-to-cladding interface where the core and cladding meet, which keeps light in the
core as it travels down the fiber. Surrounding the cladding is a buffer material, usually plastic,
that helps shield the core and cladding from damage. Figure 3-7 and Table 3-1 illustrates the
differences between multimode and single-mode fibers.

Figure 3-7 shown a fiber-optic cable Single – Multi Mode Structure

Table 3-1 shown the deference between Single – Multi Mode Structure

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