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Fiber Optic Communication Technology

Fiber Optic Communication Technology. Instructor: Prof. Deepa Venkitesh, Department of Electrical Engineering, IIT Madras. This is a graduate level course, intended to expose the students to the physical layer elements and seamlessly provide a transition from the physical layer issues to data link layer issues in optical communication systems and networks. (from nptel.ac.in)

Lecture 78 - Erbium Doped Fiber Amplifier 4

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Lecture 01 - Introduction to Fiber Optic Communication Technology

Lecture 02 - Communication through the Ages

Lecture 03 - Communication: Basics 1

Lecture 04 - Communication: Basics 2

Lecture 05 - Digital Communication for Optical Communication

Lecture 06 - Digital Modulation: Basics 2

Lecture 07 - Digital Modulation: Basics 3

Lecture 08 - Optical Communication System

Lecture 09 - Optical Sources

Lecture 10 - Semiconductor Gain Media - Structure, Spectrum

Lecture 11 - Optical Sources: LED

Lecture 12 - External Quantum Efficiency

Lecture 13 - Modulation Bandwidth of LED

Lecture 14 - Optical and Electrical Bandwidth of LED

Lecture 15 - Emission Pattern of LED

Lecture 16 - Optical Sources: Laser Diodes over LEDs

Lecture 17 - Laser Diodes: Resonator Concepts 1A

Lecture 18 - Laser Diodes: Resonator Concepts 1B

Lecture 19 - Laser Diodes: Resonator Concepts 1C

Lecture 20 - Laser Diodes: Gain Coefficient

Lecture 21 - Laser Rate Equation: Steady State Solution

Lecture 22 - Laser Rate Equation: L-I Characteristics

Lecture 23 - Laser Power Derivation

Lecture 24 - Modulation Response of Laser 1

Lecture 25 - Modulation Response of Laser 2

Lecture 26 - Modulation Response of Laser 3

Lecture 27 - Setbacks of Direct Modulation of Laser: Modulation Chirp

Lecture 28 - Setbacks of Direct Modulation of Laser: Transient Chirp

Lecture 29 - Recap of Consequences of Direct Modulation

Lecture 30 - Noise in Lasers

Lecture 31 - Relative Intensity Noise

Lecture 32 - Laser Phase Noise 1

Lecture 33 - Laser Phase Noise 2

Lecture 34 - Effect of Laser Phase Noise: A Case Study

Lecture 35 - Electro-optic Phase Modulation

Lecture 36 - Electro-optic Intensity Modulator

Lecture 37 - Biasing of MZM: BPSK Generation

Lecture 38 - Biasing of MZM: QPSK and 16 QAM Generation

Lecture 39 - Line Coding Schemes and their Bandwidth Requirements

Lecture 40 - Introduction to Optical Fiber

Lecture 41 - Attenuation in Optical Fibers

Lecture 42 - Fiber Modes

Lecture 43 - Modes of a Step Index Fiber 1

Lecture 44 - Modes of a Step Index Fiber 2

Lecture 45 - Modes of a Step Index Fiber 3

Lecture 46 - Modes of a Step Index Fiber 4

Lecture 47 - Modes of a Step Index Fiber 5

Lecture 48 - Modes and Cut-off Conditions

Lecture 49 - Universal b-v Curves

Lecture 50 - Modal Profiles in Step Index Fiber

Lecture 51 - Mode Field Diameter

Lecture 52 - Dispersion: Intermodal Dispersion Derivation

Lecture 53 - Dispersion: Bit-Rate Distance Product

Lecture 54 - Phase Velocity and Group Velocity 1

Lecture 55 - Phase Velocity and Group Velocity 2

Lecture 56 - Material Dispersion

Lecture 57 - Waveguide Dispersion

Lecture 58 - Total Dispersion in Optical Fiber

Lecture 59 - Polarization Mode Dispersion

Lecture 60 - Photodetectors: Concepts

Lecture 61 - p-n and p-i-n Photodetectors

Lecture 62 - Avalanche Photodetector

Lecture 63 - Direct Detection Receiver and Sources of Noise

Lecture 64 - Quantifying Noises in Direct Detection Receivers

Lecture 65 - SNR and Operation Regimes

Lecture 66 - Noise Equivalent Power and SNR in APDs

Lecture 67 - Coherent Receivers

Lecture 68 - SNR Analysis of Coherent Receivers

Lecture 69 - Performance Evaluation 1

Lecture 70 - Performance Evaluation 2

Lecture 71 - Performance Metrics: BER, Q and Receiver Sensitivity

Lecture 72 - Performance Metrics: Q and SNR

Lecture 73 - Quantum Limit of Photodetection

Lecture 74 - Optical Amplifier

Lecture 75 - Erbium Doped Fiber Amplifier 1

Lecture 76 - Erbium Doped Fiber Amplifier 2

Lecture 77 - Erbium Doped Fiber Amplifier 3

Lecture 78 - Erbium Doped Fiber Amplifier 4

Lecture 79 - Link Design: Rise Time Budget

Lecture 80 - Link Design: Case Study

Lecture 81 - Link Design: Passive Optical Network and Long Haul Link

Lecture 82 - Dispersion: Recap

Lecture 83 - Dispersion Compensation: Pulse Propagation with Dispersion

Lecture 84 - Pulse Propagation 2

Lecture 85 - Dispersion Compensation: Dispersion Transfer Function

Lecture 86 - Dispersion Compensation: Case Study

Lecture 87 - Dispersion Compensation: WDM and DSP

Lecture 88 - Nonlinear Effects: Nonlinear Refractive Index

Lecture 89 - Self Phase Modulation

Lecture 90 - Cross Phase Modulation

Lecture 91 - Scattering Processes in Optical Fibers

Lecture 92 - Stimulated Brillouin Scattering

Lecture 93 - Stimulated Raman Scattering

Lecture 94 - Components: Directional Couplers

Lecture 95 - Components: VOA, Polariser, Polarisation Controllers

Lecture 96 - Components: Isolator

Lecture 97 - Components: Circulator, Definitions

Lecture 98 - Components: Wavelength Filters

Lecture 99 - Components: Arrayed Waveguide Gratings, WSS

Lecture 100 - Balanced Detection

Lecture 101 - Polarisation Diverse Coherent Receiver

Lecture 102 - Phase and Polarisation Diverse Coherent Receiver

Lecture 103 - Overview of Impairment in Coherent Optical Communication

Lecture 104 - Transceiver Impairments: Generation and Compensation

Lecture 105 - Channel Impairments: Generation and Compensation

Lecture 106 - Demo Video

Lecture 107 - Introduction to Optical Networks

Lecture 108 - Layers of Optical Network

Lecture 109 - SDH/SONET Layering, Frame Structure

Lecture 110 - Physical Networks Topologies

Lecture 111 - Topology Specific Link Design

Lecture 112 - Network Protection

Lecture 113 - Access Networks: PON

Lecture 114 - Optical Interconnects, Data Centers

Lecture 115 - Optical Communication for Wireless Fronthauling