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Fiber Optic Communication Systems and Techniques

Fiber Optic Communication Systems and Techniques. Instructor: Prof. Pradeep Kumar K, Department of Electrical Engineering, IIT Kanpur. Recent years have seen an exponential increase in demand for large bandwidth and high data rate applications. This is fuelled by rapid advances in fiber-optic communications which includes introduction of digital signal processing (DSP) algorithms combined with coherent detection. A thorough grounding in optical fibers and fiber-optic communications is necessary to communication engineers to address future needs of high data rate communications. Fiber-Optic Communication Systems and Techniques provides solid background in wide ranging topics of fiber-optics. The topics covered include modes of optical fibers, impairments in optical fiber channel, lasers and photodiodes, optical amplifiers, WDM components, and digital fiber-optic communications. Several latest advances in DSP for fiber-optic communications is emphasized. (from nptel.ac.in)

Lecture 57 - DSP Algorithms for Carrier Phase Estimation

Topics covered - Timing recovery, coarse and fine frequency offset estimation, Effects of carrier phase fluctuations.

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Lecture 01 - Overview of Fiber Optic Communication Systems

Lecture 02 - Review of Maxwell's Equations

Lecture 03 - Uniform Plane Waves (UWPs) in Free Space

Lecture 04 - Properties of UWPs: Propagation Constant, Polarization, and Poynting Vector

Lecture 05 - Boundary Conditions and Reflections from a PEC

Lecture 06 - Obliquely Incident Waves: TE and TM Waves, Snell's Laws

Lecture 07 - Obliquely Incident Waves: Reflection and Transmission Coefficients, Brewster Angle

Lecture 08 - Total Internal Reflection

Lecture 09 - Ray Theory of Dielectric Slab Waveguides

Lecture 10 - Transverse Resonance Condition for Slab Waveguides

Lecture 11 - Introduction to Optical Fibers

Lecture 12 - Ray Theory of Light Propagation in Optical Fibers

Lecture 13 - Concept of Waveguide Modes

Lecture 14 - Systematic Procedure to Obtain Modes of Waveguide

Lecture 15 - Systematic Analysis of Parallel Plate Metallic Waveguide

Lecture 16 - Systematic Analysis of Dielectric Slab Waveguides

Lecture 17 - Further Discussion on Slab Waveguides

Lecture 18 - Modal Analysis of Step Index Optical Fiber

Lecture 19 - Properties of Modes of Step Index Optical Fiber

Lecture 20 - Properties of Modes of Step Index Optical Fiber (cont.)

Lecture 21 - Linearly Polarized Modes

Lecture 22 - Attenuation and Power Loss in Fibers

Lecture 23 - Introduction to Dispersion in Fibers

Lecture 24 - Mathematical Modelling of Dispersion: Transfer Function Approach

Lecture 25 - Pulse Propagation Equation and its Solution

Lecture 26 - Pre-Chirped Pulses and Inter and Intra-Modal Dispersion in Optical Fibers

Lecture 27 - Beam Propagation Method

Lecture 28 - Polarization Effects on Pulse Propagation

Lecture 29 - Modes in Optical Fibers and Pulse Propagation in Optical Fibers

Lecture 30 - Graded Index Fibers

Lecture 31 - Light Sources, Detectors and Amplifiers

Lecture 32 - Basics of Lasers

Lecture 33 - Basics of Lasers (cont.)

Lecture 34 - Basics of Lasers (cont.)

Lecture 35 - Basic Properties of Semiconductor Lasers

Lecture 36 - Basic Properties of Semiconductor Lasers (cont.)

Lecture 37 - Optical Properties of Semiconductors

Lecture 38 - Optical Properties of Semiconductors (cont.)

Lecture 39 - Double Heterostructure Lasers, Introduction to Quantum Well Lasers

Lecture 40 - Semiconductor Optical Amplifier

Lecture 41 - Erbium Doped Fiber Amplifier

Lecture 42 - Photodetectors

Lecture 43 - Noise in Photodetectors

Lecture 44 - Introduction to WDM Components

Lecture 45 - Couplers, Circulators, FRM and Filters

Lecture 46 - Filter, MUX/DEMUX, Diffraction Grating (FBG and Long Period Grating)

Lecture 47 - Optical Modulators: Current Modulation

Lecture 48 - Optical Modulators: Electro-optic Modulators

Lecture 49 - Review: Deterministic and Random Signals, Baseband and Passband Signals

Lecture 50 - Review: Signal and Vectors, Signal Energy, Orthonormal Basis Functions

Lecture 51 - Intensity Modulation/ Direct Detection

Lecture 52 - BER Discussion for OOK Systems

Lecture 53 - Higher Order Modulation and Coherent Receiver

Lecture 54 - Coherent Receiver for BPSK Systems and BER Calculation

Lecture 55 - Recovering Polarization

Lecture 56 - DSP Algorithms for Chromatic Dispersion Mitigation

Lecture 57 - DSP Algorithms for Carrier Phase Estimation

Lecture 58 - DSP Algorithms for Carrier Phase Estimation (cont.)

Lecture 59 - Nonlinear Effects in Fiber

Lecture 60 - Four Wave Mixing, Loss Measurement, Dispersion Measurement

Lecture 61 - Lab Demonstration: Laser Diode Characteristics, Loss Measurement, Optical Intensity Modulation