Selecting the Right Attenuator 3

Intrinsic attenuation

Intrinsic attenuation occurs due to something inside or inherent to the fiber. It is caused by impurities in the glass during the manufacturing process. As precise as manufacturing is, there is no way to eliminate all impurities, though technological advances have caused attenuation to decrease dramatically since the first optical fiber in 1970.
When a light signal hits an impurity in the fiber, one of two things will occur: it will scatter or it will be absorbed.

June 11, 2011

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