A graded-index fiber has a core with parabolic refractive index profil – McqOptions

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1.	A graded-index fiber has a core with parabolic refractive index profile of diameter of 30 m, NA=0.2, =1 m. Estimate the normalised frequency.
A.	19.32
B.	18.84
C.	16.28
D.	17.12
Answer» C. 16.28

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