Waveguide bends in three-dimensional layer-by-layer photonic bandgap materials

Abstract

We theoretically investigate waveguide bends in three-dimensional dielectric photonic bandgap (PBG) materials. The PBG materials used in this study consist of layers of alumina rods. An L-shaped waveguide is created by removing part of the rod in one layer and part of the rod in the next layer. The removed rods are perpendicular to each other. Using finite-difference time-domain (FDTD) simulations, we found that 100% transmission efficiency can be achieved through the 90° bend. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 23: 56–59, 1999.