Question

For a SI fiber refractive indices of core is 1.44.
Calculate the acceptance angle in air for skew rays that
change direction by 1200 at each reflection at core
cladding interface

Answer 1

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.

Explanation:

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Answer 2

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