Engineering of multiple bound states in the continuum by latent representation of freeform structures
Embargo End Date2022-03-22
KAUST DepartmentAdvanced Semiconductor Laboratory
Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Electrical and Computer Engineering
Electrical and Computer Engineering Program
KAUST Grant NumberBAS/1/1664-01-01
Online Publication Date2021-03-22
Print Publication Date2021-04-01
AbstractWe demonstrate a neural network capable of designing on-demand multiple symmetry-protected bound states in the continuum (BICs) in freeform structures with predefined symmetry. The latent representation of the freeform structures allows the tuning of the geometry in a differentiable, continuous way. We show the rich band inversion and accidental degeneracy in these freeform structures by interacting with the latent representation directly. Moreover, a high design accuracy is demonstrated for arbitrary control of multiple BIC frequencies by using a photonic property readout network to interpret the latent representation.
CitationLin, R., Alnakhli, Z., & Li, X. (2021). Engineering of multiple bound states in the continuum by latent representation of freeform structures. Photonics Research, 9(4), B96. doi:10.1364/prj.415655
AcknowledgementsKing Abdullah University of Science and Technology Baseline Fund (BAS/1/1664-01-01); Competitive Research Grants (URF/1/3437-01-01, URF/1/3771-01-01).
The authors would like to thank Prof. Andrea Fratalocchi from KAUST for his advice.