Computational Nanophotonics

5

Modeling Optical Applications of Nanofibers/Nanowires

Yipei Wang and Limin Tong

CONTENTS

5.1    Introduction

5.2    Single-Mode Waveguiding Properties of Dielectric Nanofibers/Nanowires

5.2.1    Mathematical Model

5.2.2    Propagation Constants and Single-Mode Condition

5.2.3    Modal Fields of Fundamental Modes

5.2.4    Power Distributions and Effective Diameters

5.2.5    Group Velocity and Waveguide Dispersion

5.3    Dispersion in Optical Nanowires with Thin Dielectric Coatings

5.3.1    Mathematical Model

5.3.2    Dispersion Shifts in Silica Nanowires with High-lndex Coat

5.4    Roughness-Induced Radiation Losses

5.4.1    Theoretical Analysis

5.4.2    Dependence of Roughness-Induced Loss on the Perturbation Period

5.4.3    Dependence of ...