Name of Subject  : OPTICAL COMMUNICATION  (6 IT 5)

Unit

Contents

Introduction to optical communication principles of light transmission optical fiber modes and configurations, Mode

theory for circular wave-guides, Single-mode fibers, Multimode fibers, Numerical aperture, Mode field diameter, V-

I

number, fiber materials, Fiber fabrication techniques.

Optical sources, LED'S, LASER diodes, Model reflection noise, Power launching and coupling, population

inversion, fiber splicing, optical connectors, Photo-detectors, PIN, Avalanche detector, Response time, Avalanche

II

multiplication noise.

Signal degradation in optical fibers, Attenuation losses, Signal distortion in optical wave guides, Material

dispersion, Wave guide dispersion, Chromatic dispersion, Inter-modal distortion, Pulse broadening in Graded index

III

fibers, Mode coupling, Advance fiber designs: dispersion shifted, Dispersion flattened, Dispersion compensating

fibers, Design optimization of single mode fibers.

Coherent optical fiber communication, Modulation techniques for Homodyne and Heterodyne systems, Optical filter

link design.  Rise time budget and link power budget, Long haul systems bit error rate, line coding, NRZ, RZ, Block

IV

Codes eye pattern.

Advance system and techniques, wavelength division multiplexing, optical amplifiers semiconductor amplifier,

V

EDFA, Comparison between semiconductor and optical amplifier, Gain band width, Photonic switching, Optical