Anna University, Chennai Nov/Dec -Important Questions
Optical Communication And Networking EC2402
VII Sem ECE
Unit I-V
1.
Discuss the mode theory of circular waveguide
2.
Discuss the propagation modes in single -mode fiber
3.
What are the fiber modes? Explain mode theory for optical fibers
in detail
4.
Compare Single mode fibers and Graded index fibers. Explain the
requirements for fiber materials
5.
Explain various types of fiber splicing techniques and fiber
connectors
6.
Discuss various kinds of losses that an optical signal might
suffer while propagating through fiber, Which is most important one? What is
the effect of these losses on light power and pulse shape
7.
Derive an expression for material dispersion
8.
Discuss the signal distortion in single mode fibers
9.
Discuss the LASER diode principle , modes and threshold conditions
10.Derive
the internal quantum efficiency of an LED.
11.
Describe
the characteristic of responsivity against wavelength for an ideal silicon
photodiode with the help of its expression
12.Derive the internal
quantum efficiency and shows the variation in threshold current with
temperature for ILD
13.
Draw
and explain the operation of high impedance FET and BJT preamplifiers
14.Explain the error
sources of fundamental receiver operations. Discuss the performance of digital
receiver by defining the probability of error
15.
Explain
the following i) Fiber attenuation measurements, ii) Fiber cutoff wavelength
measurements
16.Explain fiber
diameter and numerical aperture measurements
17.
Explain
the basic frame structure and network architecture of SONET
18.Explain the salient
feature of solitions using relevant expressions and diagrams
19.Explain the Ultra
high capacity WDM systems and discuss the system performance of WDM and EDFA
