UNIT 1:
Graded Index fiber structure.
Linearly Polarized Modes -Single Mode Fibers
Overview of Modes-Key Modal concepts
Mode theory of Circular Wave guides
Optical Fiber Modes and Configurations
Numerical aperture – Skew rays Ray Optics
Evolution of fiber optic system
Element of an Optical Fiber Transmission link
Total internal reflection-Acceptance angle
UNIT 2:
Pulse Broadening in GI fibers
Polarization Mode dispersion
Wave guide Dispersion, Signal distortion in SM fiber
Group Delay-Material Dispersion,
Signal Distortion in Optical Wave guides-Information Capacity determination
Design Optimization of SM fibers
RI profile and cut-off wavelength.
UNIT 3:
Fiber splicing-Signal to Noise ratio , Detector response time.
Lencing schemes, Fiber -to- Fiber joints
Fiber amplifiers- Power Launching and coupling
-Laser Diodes, Temperature effects, Introduction to Quantum laser
External Quantum efficiency -Resonant frequencies
lasers Diodes-Modes and Threshold condition
Quantum efficiency and LED power, Modulation of a LED
LED structures -Light source materials
Direct and indirect Band gap materials
UNIT 4:
Fundamental receiver operation, Pre amplifiers
Error sources – Receiver Configuration
Probability of Error – Quantum limit
Fiber Attenuation measurements- Dispersion measurements
Fiber Refractive index profile measurements
Fiber cut- off Wave length Measurements
Fiber Numerical Aperture Measurements
Fiber diameter measurements.
UNIT 5:
EDFA system – Solutions – Optical CDMA
Operational Principles of WDM Performance of WDM
Noise Effects on System Performance
Link Power budget -Rise time budget
Non linear effects on Network performance
Wavelength Routed Networks
Broadcast – and –select WDM Networks
Basic Networks – SONET / SDH
Ultra High Capacity Networks.
