If n1 and n2 are the refractive indices of the core and cladding respectively, the maximum acceptance angle at the air-core interface should be
A. $${\tan ^{ - 1}}\frac{{{n_2}}}{{{n_1}}}$$
B. $${\sin ^{ - 1}}\sqrt {n_2^2 - n_1^2} $$
C. $${\sin ^{ - 1}}\sqrt {n_1^2 - n_2^2} $$
D. $${\tan ^{ - 1}}\frac{{{n_1}}}{{{n_2}}}$$
Answer: Option C
This Question Belongs to Electronics And Communications Engineering >> Optical Communication
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