Nanostructured and Subwavelength Waveguides: Fundamentals and Applications

Description

Optical waveguides take a prominent role in photonics because they are able to trap and to transport light efficiently between a point of excitation and a point of detection. Moreover, waveguides allow the management of many of the fundamental properties of light and allow highly controlled interaction with other optical systems. For this reason waveguides are ubiquitous in telecommunications, sensing, spectroscopy, light sources, and high power light delivery. Nanostructured and subwavelength waveguides have additional advantages; they are able to confine light at a length scale below the diffraction limit and enhance or suppress light-matter interaction, as well as manage fundamental properties of light such as speed and direction of energy and phase propagation. This book presents semi-analytical theory and practical applications of a large number of subwavelength and nanostructured optical waveguides and fibers operating in various regions of the electromagnetic spectrum including visible, near and mid-IR and THz. A large number of approximate, while highly precise analytical expressions are derived that describe various modal properties of the planar and circular isotropic, anisotropic, and metamaterial waveguides and fibers, as well as surface waves propagating on planar, and circular interfaces. A variety of naturally occurring and artificial materials are also considered such as dielectrics, metals, polar materials, anisotropic all-dielectric and metal-dielectric metamaterials.Contents are organized around four major themes:Guidance properties of subwavelength waveguides and fibers made of homogeneous, generally anisotropic materials Guidance properties of nanostructured waveguides and fibers using both exact geometry modelling and effective medium approximationDevelopment of the effective medium approximations for various 1D and 2D nanostructured materials and extension of these approximations to shorter wavelengthsPractical applications of subwavelength and nanostructured waveguides and fibers Nanostructured Subwavelengths and Waveguides is unique in that it collects in a single place an extensive range of analytical solutions which are derived in various limits for many practically important and popular waveguide and fiber geometries and materials.Content: Chapter 1 Introduction (pages 1–19): Chapter 2 Hamiltonian Formulation of Maxwell Equations for the Modes of Anisotropic Waveguides (pages 21–37): Chapter 3 Wave Propagation in Planar Anisotropic Multilayers, Transfer Matrix Formulation (pages 39–45): Chapter 4 SlabWaveguides Made from Isotropic Dielectric Materials. Example of Subwavelength Planar Waveguides (pages 47–74): Chapter 5 SlabWaveguides Made from Anisotropic Dielectrics (pages 75–79): Chapter 6 Metamaterials in the Form of All?Dielectric Planar Multilayers (pages 81–90): Chapter 7 Planar Waveguides Containing All?Dielectric Metamaterials, Example of Porous Waveguides (pages 91–102): Chapter 8 Circular Fibres Made of Isotropic Materials (pages 103–136): Chapter 9 Circular Fibres Made of Anisotropic Materials (pages 137–154): Chapter 10 Metamaterials in the Form of a Periodic Lattice of Inclusions (pages 155–166): Chapter 11 Circular Fibres Made of All?Dielectric Metamaterials (pages 167–183): Chapter 12 Modes at the Interface between Two Materials (pages 185–208): Chapter 13 Modes of a Metal Slab Waveguide (pages 209–232): Chapter 14 Modes of a Metal Slot Waveguide (pages 233–245): Chapter 15 Planar Metal/Dielectric Metamaterials (pages 247–252): Chapter 16 Examples of Applications of Metal/Dielectric Metamaterials (pages 253–279): Chapter 17 Modes of Metallic Wires, Guidance in the UV–Near?IR, Mid?IR and Far?IR Spectral Ranges (pages 281–299): Chapter 18 Semianalytical Methods of Solving Nonlinear Equations of Two Variables (pages 301–305):