Page 60 - Handout Computer Network.

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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