OFC (B-TECH Electronics and Communication Engineering 7-8th)

1. Introduction: Need of Fiber Optic Communications, Evolution of Light wave

Systems, Basic Concepts; Analog & Digital Signals, Channel Multiplexing, Modulation

Formats, Optical Communication Systems, Light wave System Components; Optical

Fibers as a Communication Channel, Optical Transmitters, Optical Receivers.

2. Optical Fibers: Geometrical-Optics Description; Step-Index Fibers, Graded Index

Fibers, Wave Propagation; Maxwell’s Equations, Fiber Modes, Single-Mode-Fibers,

Dispersion in Single-Mode Fibers; Group Velocity Dispersion, Material Dispersion,

Wave guide Dispersion, Higher-order Dispersion, Polarization-Mode Dispersion,

Dispersion-Induced Limitations; Basic Propagation Equation, Chirped Gaussian

Pulses, Limitations on the Bit Rate, Fiber Bandwidth , Fiber Losses; Attenuation

Coefficient, Material Absorption, Rayleigh Scattering, wave guide Imperfections,

Nonlinear Optical effects; Stimulated Light Scattering, Nonlinear Phase Modulation,

Four Wave Mixing, Fiber Manufacturing; Design Issues, Fabrication Methods, Cables

and Connectors

3. Optical Transmitters: Basic Concepts; Emission and Absorption Rates, p-n

Junctions, Non radiative Recombination, Semi conductor Materials, Light Emitting

Diodes; Power-current Characteristics, LED spectrum, Modulation Response, LED

Structures, Semi Conductor Lasers; DFB Lasers, Coupled Cavity semiconductor

Lasers, Tunable Semiconductor Lasers, Vertical Cavity Semiconductor Lasers, Laser

Characteristics, Small & Large Signal Modulation, Spectral Line width, Source Fiber

Coupling.

4. Optical Receivers: Basic concepts, p-n Photo Diodes, p-i-n Photo Diodes,

Avalanche Photo Diode, MSM Photo detector, Receiver Design, Receiver Noise;

Noise mechanism, Receiver sensitivity; Bit error rate, Minimum Receiver Power,

Sensitivity Degradation, Receiver Performance.

5. Light Wave Systems: System Architecture, Loss limited Light wave systems,

Dispersion limited Light wave systems, Power Budget, Long Haul systems, Sources

of Power Penalty; Model Noise, Dispersive Pulse Broadening, Mode Partition Noise,

Frequency Chirping, Reflection Feedback Noise.

6. Multi channel Systems: WDM Light wave systems, Optical TDM