Extrinsic Absorption - Reasons of occurrence

Q.  During the design of FOC system, which among the following reasons is/are responsible for an extrinsic absorption?
- Published on 21 Nov 15

a. Atomic defects in the composition of glass
b. Impurity atoms in glass material
c. Basic constituent atoms of fiber material
d. All of the above

ANSWER: Impurity atoms in glass material

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