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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.)