An optical fiber cable comes with the specifications 50/125 um. What do the numbers represent?

Question

Options

• AThe first number represents the distance for a 10 Gb/s connection; the second number represents
• BThe first number represents the diameter of the core; the second number represents the diameter
• CThe first number represents the diameter of the core; the second number represents the actual
• DThe first number represents the required distance to single-phase power cabling; the second

• B
  90% (27)
• C
  3% (1)
• D
  7% (2)

Explanation

Optical fiber cables are composed of a core, a cladding, and a coating. The core is the central part of the fiber that carries the light signal. The cladding is the layer surrounding the core that reflects the light back into the core and prevents signal loss. The coating is the protective layer that covers the cladding and provides mechanical strength and environmental protection. The specifications of an optical fiber cable indicate the dimensions of the core and the cladding in microns (m), which are one millionth of a meter. For example, a 50/125 m cable has a core diameter of 50 m and a cladding diameter of 125 m. The coating diameter is usually 250 m, but it is not part of the specifications.

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