Optical Communication Syllabus

This article is created to cover the chapter-wise syllabus of optical communication. Let's start with its introduction.

Introduction to Optical Communication

  • Optical Spectral Band with Operating Windows
  • General Communication System
  • Optical Communication System with its advantages
  • Optical Fiber Waveguides
  • Ray Theory of Transmission with Total Internal Reflection (TIR), Acceptance Angle, Numerical Aperture and Skew Rays
  • Electromagnetic Mode Theory for Optical Propagation
  • Modes in a Planar Guide
  • Phase and Group Velocity
  • Phase Shift with TIR
  • Evanescent Field
  • Goos-Haenchen Shift
  • Cylindrical Fiber Modes
  • Mode Coupling
  • Step Index fibers Vs Graded Index fibers
  • Single Mode Fibers and Cut off wavelength
  • MFD & Spot Size

Signal Loss in Optical Fibers

  • Attenuation
  • Material Absorption Losses (Intrinsic and Extrinsic absorption)
  • Types of Linear and Non-Linear Scattering Losses
  • Fiber Bending Losses
  • Kerr Effect
  • Dispersion: Introduction with its types:
    • Chromatic/Intramodal Dispersion (Material and Waveguide D'ispersion)
    • Intermodal dispersion (for MSI and MGI fibers)
    • Overall (Total) Fiber Dispersion in Multimode and Singe Mode Fiber
    • Dispersion Modified Single Mode Fibers
  • Polarization & Fiber Birefringence

Optical Sources

  • LEDs:
    • Introduction to LEDs & Materials used for fabrication
    • LED Power and Efficiency
    • LED Structures
    • LED Characteristics
  • Modulation Bandwidth
  • Laser Diodes:
    • Introduction
    • Optical Feedback & Laser Oscillations
    • Resonant Frequencies
    • Laser Modes
    • Threshold Condition for Laser Oscillation
  • Laser Diode Rate Equations
  • Semiconductor injection Laser:
    • Efficiency
    • Laser Single Mode operation
    • Reliability of LED & ILD

Power Launching in Fiber

  • Source to Fiber Power Launching and Coupling Techniques
  • Power Launching Vs Wavelength
  • Equilibrium Numerical Aperture
  • Photodetector:
    • Introduction
    • Physical Principles of Photodiodes:
      • The PIN Photo Detector
      • Avalanche Photodiodes
      • Temperature Effect on Avalanche Gain
    • Detector Response Time
    • Photo Detector Noise:
      • Noise Sources
      • Signal to Noise Ratio
    • Comparison of Photo Detectors
  • Fundamental Receiver Operation with Digital Signal Transmission

Digital Receiver Performance

  • Probability of Error/BER
  • Receiver Sensitivity & The Quantum Limit
  • Error Control Techniques
  • Eye Diagram Pattern Features
  • Coherent Detection: Homodyne Detection and Heterodyne Detection
  • Digital links: Point to Point Links
  • Power Penalties
  • Multichannel & Multiplexing Transmission Techniques
  • Basic concept of Free Space Optics (FSO) based Communication System

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