Anomalous dispersioninbluewavelengthrange in verticallycoupledIII-nitridewaveguides

Abstract

In this paper, we present dispersion engineering in vertically coupled III- nitride (GaN/AlN/GaN) waveguides for short (blue) wavelengths. Peak anomalous dispersion ≈1.83 × 105 ps/nm − km is achieved by tuning the geometric parameters and thereby coupling strength of the waveguides.