Dirty or scratched Fiber Optic Cable Ends

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Fig 1: Identifying Types Of Cable Failure (Dirty Or Scratched Fiber Optic Cable Ends)

Courtesy of BMW OF NORTH AMERICA, INC.

Another potential source of problems is dirty or scratched cable ends. Although the ends of the cables are protected against accidental contact, damage can still occur by incorrect handling.

Dirt on the end of an optical fiber will prevent light from exiting/entering. The dirt absorbs the light and increases attenuation.