Estimate the critical angle when the core refractive
index is 1.48 and relative refractive index is 2%.
Answers
Answered by
1
Explanation:
Here,μ
1
=1.50;μ
2
=1.47;
μ
0
=1
(i) Critical angle θ
c
at the core-cladding interface is given by
θ
c
=sin
−1
1.50
1.47
=78.5
0
(ii) Numerical aperture,NA=(μ
1
2
−μ
2
2
)
2
1
=[(1.50)
2
−(1.47)
2
]
2
1
=(2.25−2.16)
1/2
=0.30
(iii) Acceptance angle θ
a
=sin
−1
(NA)
=sin
−1
(0.30)=17.4
0
Answered by
0
Answer:
1.48 and relative refractive index is 2%.
Similar questions