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Physics of Linear and Nonlinear Optical Waveguides

Physics of Linear and Nonlinear Optical Waveguides. Instructor: Prof. Samudra Roy, Department of Physics, IIT Kharagpur. Optical waveguide is a physical structure that guides electromagnetic waves and it is the most important component of integrated optical circuits. This course is intended to describe the theoretical basis of optical waveguides. In this course we learn the principle of light guidance by understanding the light-matter interaction in linear and nonlinear regime. We will also discuss different optical components based on waveguides that are used extensively in communication and sensing. This course is mostly self-contained with very basic prerequisites like knowledge of elementary algebra and calculus. The course is prepared for the senior graduate and M.Sc. students having a prior knowledge of electromagnetic theory. (from nptel.ac.in)

Lecture 28 - Physical Understanding of Modes

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Lecture 01 - Wave Equation, Maxwell's Equation, Plane Wave

Lecture 02 - EM Wave in Vacuum, Poynting Vector, Maxwell's Equation in Dielectric Medium

Lecture 03 - Poynting Vector, Maxwell's Equation in Dielectric Medium (cont.)

Lecture 04 - Total Internal Reflection, Evanescent Wave

Lecture 05 - Step-Index Fiber (SIF), Light Guidance in SIF

Lecture 06 - Light Guidance in SIF (Skew Ray), V-Parameter, Discrete Ray

Lecture 07 - Cutoff Wavelength, Fiber Characteristics

Lecture 08 - Fiber Loss, dB Units, Dispersion

Lecture 09 - Dispersion, Ray Path Constant

Lecture 10 - Ray Path Constant, Ray Equation

Lecture 11 - Ray Equation (cont.)

Lecture 12 - Ray Transit Time

Lecture 13 - Ray Transit Time (cont.)

Lecture 14 - Material Dispersion

Lecture 15 - Material Dispersion (cont.)

Lecture 16 - Material Dispersion (cont.), Dispersion Coefficient

Lecture 17 - Pulse Broadening

Lecture 18 - Pulse Propagation in Dispersive Medium

Lecture 19 - Pulse Propagation in Dispersive Medium (cont.)

Lecture 20 - Concept of Modes

Lecture 21 - TE and TM Modes

Lecture 22 - TE and TM Modes (cont.)

Lecture 23 - Modes in Slab Waveguide

Lecture 24 - Modes in Slab Waveguide (cont.)

Lecture 25 - Modes in Slab Waveguide (cont.)

Lecture 26 - Modes in Slab Waveguide (cont.)

Lecture 27 - Waveguide Dispersion

Lecture 28 - Physical Understanding of Modes

Lecture 29 - Power Associated with a Mode

Lecture 30 - Modes in an Optical Fiber

Lecture 31 - Modes in an Optical Fiber (cont.)

Lecture 32 - Modes in an Optical Fiber (cont.)

Lecture 33 - Optical Fiber Mode Morphology

Lecture 34 - Optical Fiber Mode Morphology (cont.)

Lecture 35 - Effective Area of Mode, Fiber Optics Components

Lecture 36 - Directional Coupler

Lecture 37 - Coupled Mode Theory

Lecture 38 - Coupled Mode Theory (cont.)

Lecture 39 - 3dB Power Splitter

Lecture 40 - Working Principle of WDM Coupler

Lecture 41 - Fiber Bragg Grating

Lecture 42 - Fiber Bragg Grating (cont.)

Lecture 43 - Reflectivity Calculation

Lecture 44 - Reflectivity Calculation (cont.)

Lecture 45 - Reflectivity Calculation of FBG (cont.)

Lecture 46 - Reflectivity Calculation of FBG (cont.)

Lecture 47 - Reflectivity Calculation of FBG (cont.)

Lecture 48 - Bandwidth of Reflectivity

Lecture 49 - Basic Nonlinear Optics

Lecture 50 - Frequency Mixing, Optical Kerr Effect

Lecture 51 - Frequency Mixing, Optical Kerr Effect (cont.)

Lecture 52 - Self Phase Modulation

Lecture 53 - Self Phase Modulation (cont.)

Lecture 54 - Self Phase Modulation (cont.)

Lecture 55 - Pulse Propagation in Nonlinear Waveguide

Lecture 56 - Pulse Propagation in Nonlinear Waveguide (cont.)

Lecture 57 - Pulse Propagation in Nonlinear Dispersive Waveguide

Lecture 58 - Pulse Propagation in Nonlinear Dispersive Waveguide (cont.)

Lecture 59 - Concept of Optical Soliton

Lecture 60 - Concept of Optical Soliton (cont.)