1.

The index profile of a core of multimode graded index fiber is given by?a) N (r) = n1 [1 – 2Δ(r2/a)2]1/2; r

A. N (r) = n1 [1 – 2Δ(r2/a)2]1/2; r<a
B. N (r) = n1 [3 – 2Δ(r2/a)2]1/2; r<a
C. N (r) = n1 [5 – 2Δ(r2/a)2]1/2; r>a
D. N (r) = n1 [1 – 2Δ(r2/a)2]1/2; r<a
Answer» E.


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