Part A (10X2=20 Marks)
1.
Assume
that there is a glass rod of refractive index 1.5 surrounded by the air. Find the
critical angle.
2.
What
is mode field diameter?
3.
Write
the advantages of optical fiber communication.
4.
Define
intermodal dispersion.
5.
What
are the factors involved in mode coupling?
6.
Define
normalized frequency.
7.
Define
signals attenuation of fiber loss.
8.
Define
macroscopic bending loss.
9.
What
is meant by material dispersion fibers?
10. Give the expression for group
delay.
PART B (16X5=80 Marks)
11. a) Explain and detail about
elements optical fiber transmission link.(12)
b)
Explain skew rays.(4)
12.
Explain in detail about optical fiber modes and its configuration. (16)
13
Explain in detail about mode theory of circular wave guides.(16)
14.
Explain design optimization of single mode fibers.(16)
15. a) Explain
polarization mode dispersion.(8)
b) A
silica optical fiber with a core refractive index of 1.50 and cladding
refractive index of 1.47.Determine the (i) critical angle at the core, cladding
interface (ii) numerical aperture of fiber (iii) acceptance angle in air for
the fiber.
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