## 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 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.) |