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Online Course

Optical Communications

Indian Institute of Technology Kanpur and NPTEL via Swayam

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Overview

Optical communications is a frequent elective/core course offered to third/final year undergraduate students in Electrical Engineering. This course offers a gradual approach to optical communications with emphasis on latest developments in coherent optical communications. Starting from a broad introduction to transmitters and receivers, this course covers optical fibers and waveguides, lasers, detectors, optical amplifiers, channel impairments and their mitigation using signal processing algorithms. Matlab models will be discussed.

Syllabus

Week 1: Overview of optical fiber communications, Optical transmitter components--lasers and optical modulators
Week 2: General digital communication system, Line coding and Pulse shaping, Signal space representation
Week 3: Digital modulation formats: ASK, PSK, and QAM, Matlab models, Optical implementation, Matlab models
Week 4: Higher-order modulation (star and square QAM) and Multicarrier modulation (OFDM), Optimum receiver principles
Week 5: Optical receivers I: Photodetectors and its performance characteristics, noise in photodetection, common types of photodetectors
Week 6: Optical receivers II: Direct detection, self-homodyne (differential) detection, and coherent detection, Sensitivity, Impact of noise
Week 7: Lasers, rate equations, RIN and phase noise
Week 8: Optical amplifiers: EDFA and SOA, ASE, system impact
Week 9: Electromagnetic theory, Wave equations, Reflection and transmission of waves
Week 10: Optical fiber modes, single and multi-mode fibers, single and multi-core fibers, attenuation and dispersion
Week 11: Nonlinear effects (SPM, XPM, FWM), Multiplexing: Polarization, Wavelength, and Time division multiplexed systems, Important WDM components
Week 12: DSP in optical communications, dispersion mitigation, phase noise estimation and compensation, carrier phase recovery, digital back propagation

Taught by

Pradeep Kumar K

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