Rajasthan Polytechnic Third Year Paper 2016 – Fiber Optics Engineering

Rajasthan Polytechnic Third Year Paper 2016 – Fiber Optics Engineering

Light is confined within the core of a simple optical fiber
(a) Refraction
(b) total internal reflection at the outer edge of the cladding
(c) total internal reflection at the core cladding boundary
(d) reflection from the fiber’s plastic coating

Which of the following describe a technique to achieve fault tolerance in optical network with minimum cost?
(a) Topological reconfiguration
(b) connectors
(c) polarization
(d) None of the above

Which of the following happen to be the limitations of optical fiber?
I. The architecture of their couplers
II. Cost of implementing them.
III. Modification of the software & hardware on existing system
IV. The difficulty of installing the cables
(a) II and IV
(b) I, II, III
(c) I, II, IV
(d) I, II, III, IV

What type of optical fiber would best to used in the multiple channel architecture?
(a) Refractive index
(b) Step index
(c) Graded index
(d) None of the above

Optical fibers work on the principle of
(a) total internal reflection
(b) total refraction
(c) total polarization
(d) None of the above

The meridional rays follow a helical path through the fiber are
(a) Skey ray
(b) Sound ray
(c) Noise
(d) None of the above

The study of electromagnetic wave propagation is provided by
(a) Laplace theorem
(b) Special function
(c) Maxwell’s equation
(d) Quadrant equation

The stable field distribution in the x-direction with only a periodic Z dependence is known as
(a) Mode
(b) Median
(c) Special field
(d) Two dimension

In optical fiber, core refractive index is 1.50 and cladding refractive index is 1.47 then numerical aperture is
(a) 0.29
(b) 0.30
(c) 0.31
(d) 1.00

The maximum acceptance angle, it is commonly used to describe the light acceptance capability of a fiber and to calculate source to fiber?
(a) Optical power coupling efficiency
(b) Optical power
(c) Optical sensitivity
(d) Optical work