Photonic Band Gaps and Resonance Modes in 2D Twisted Moire Photonic Crystal

The study of twisted bilayer 2D materials has revealed many interesting physics properties. A twisted moire photonic crystal is an optical analog of twisted bilayer 2D materials. The optical properties in twisted photonic crystals have not yet been fully elucidated. In this paper, we generate 2D twisted moire photonic crystals without physical rotation and simulate their photonic band gaps in photonic crystals formed at different twisted angles, different gradient levels, and different dielectric filling factors. At certain gradient levels, interface modes appear within the photonic band gap. The simulation reveals tic tac toe -like and traffic circle -like modes as well as ring resonance modes. These interesting discoveries in 2D twisted moire photonic crystal may lead toward its application in integrated photonics.

Automated summary

The study simulated the generation of 2D twisted moire photonic crystals and observed various modes and phenomena in photonic band gaps formed at different twisted angles, gradient levels, and dielectric filling factors. The findings suggest that these interesting discoveries may lead to applications of twisted moire photonic crystals in integrated photonics.