Fig. 1. Structure design of the Moiré lattice, dark layer is SiO₂ and the light colored layer is Ta₂O₅. (a) Structure of single-period photonic lattice and its refractive index distribution function; (b) structure of the Moiré lattice with α=26.5° and its refractive index distribution function; (c) structure of the Moiré lattice with α=36.9° and its refractive index distribution function; (d) structure of the Moiré lattice with α=40.6° and its refractive index distribution function

Fig. 2. Band compression coefficient with different artificially synthetic Moiré angles

Fig. 3. Band structure of three Moiré lattices. (a) Band structure of Moiré lattice 1 with α=26.5°; (b) band structure of Moiré lattice 2 with α=36.9°; (c) band structure of the Moiré lattice 3 with α=40.6°; (d) comparison of band structures of three Moiré lattices

Fig. 4. Group velocity of three Moiré lattices

Fig. 5. Group velocity dispersion of three Moiré lattices. (a) First order GVD of three Moiré lattices; (b) second order GVD of three Moiré lattices

Fig. 6. Schematic of pulse width measurement optical path based on autocorrelation instrument

Fig. 7. Pulse width change ratio of ultrashort pulse after passing through three Moiré lattices