Question
Question: What should be the maximum acceptance angle at the air core interface of an optical fibre if n<sub>1...
What should be the maximum acceptance angle at the air core interface of an optical fibre if n1 and n2 are the refractive indices of the core and the cladding, respectively
A
sin−1(n2/n1)
B
sin−1n12−n22
C
[tan−1n1n2]
D
[tan−1n2n1]
Answer
sin−1n12−n22
Explanation
Solution
Core of acceptance angle θ=sin−1n12−n22