Guided Wave Optics and Photonic Devices

11	Guided-Wave Fourier Optics Le Nguyen Binh Huawei Technologies

CONTENTS

11.1    Introduction

11.2    Background: Fourier Transformation

11.2.1    Basic Transform

11.2.2    Fourier Transform Signal Flow and Optical Implementation

11.2.3    Generalized Fibre Fourier Optics

11.2.4    Practical Integrated Guided-Wave Structure

11.2.4.1    Cascade: Series Formation

11.2.4.2    Parallel Formation: AWG

11.2.4.3    Design and Fabrication of Optical Waveguides for Optical FFT and IFFT

11.3    Field and Modes Guided in Single and Multimode Rectangular Optical Waveguides

11.3.1    Mode Fields of H_X Modes

11.3.2    Boundary Conditions at the Interfaces

11.3.2.1    Horizontal Boundary y = ± h/2; |x|< w/2

11.3.2.2    Vertical Boundary x = ±w/2; |y